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The public trust doctrine, private water allocation, and Mono Lake: the historic saga of National Audubon Society v. Superior Court.

IV. THE MONO LAKE LITIGATION

The emerging coalition marshalled its resources to forestall further environmental devastation in the Mono Basin, culminating in the California Supreme Court's epic Mono Lake decision. This Part reviews the path to litigation, the arguments that reached the high court, the justices' landmark ruling, and the aftermath of its decision--including the Water Board's resulting plans for implementation of the court's decision and Los Angeles's embrace of a new strategy for compliance. After exploring the most important doctrinal features of the court's decision, it touches on some important scholarly criticisms of the resulting doctrine, as well as potential future public trust developments, including the Atmospheric Trust Project.

A. The Audubon Society (Mono Lake) Case

In 1979, the National Audubon Society and Mono Lake Committee filed a lawsuit in Mono County court, arguing that Los Angeles's diversions violated the public trust doctrine, constituted a common law nuisance, and violated portions of the California constitution protecting navigable waterways. (301) Los Angeles defended the legality of the diversions under California water law and moved for an adjudication of all water rights in the Mono Basin--effectively joining all private, state, and federal landholders in a suit that would ultimately proceed all the way to the California Supreme Court. (302)

1. The Parties

The parties to the resulting litigation included local residents, state landowners, environmental nongovernmental organizations (NGOs) at various levels of geographical scale, government agencies responsible for impacted land, water, wildlife, and air resources, and DWP. The Mono Lake Committee coordinated efforts on behalf of the plaintiffs from Lee Vining, where they remain a Mono Basin watchdog and advocacy group. (303) In addition to local and national chapters of the Audubon Society, they were joined by several other environmental NGOs, including Friends of the Earth, the Sierra Club Legal Defense Fund, and CalTrout. (304)

A host of state and federal government agencies were also involved, (305) including the U.S. Forest Service (responsible for managing the Mono Basin National Forest Scenic Area), the U.S. Fish and Wildlife Service (with interests in the Mono Basin creeks and fisheries), the California Department of Fish and Game (concerned with wildlife impacts), the California Department of Parks and Recreation (responsible for the Mono Lake Tufa State Reserve), the State Lands Commission (responsible for state land resources), and the California Great Basin Unified Air Pollution Control District (charged with managing compliance with the Clean Air Act and other air quality controls). (306) And of course, DWP defended the city's exports. (307)

2. Settlement Negotiations

Extensive negotiations preceded the California Supreme Court's disposition of the case, in which lawmakers and others tried and failed to persuade the disputants to reach a compromise. (308) Sizeable state and federal grants were offered to help Los Angeles adopt water conservation technologies that might reduce its need for water imports, (309) but the city was loathe to give any ground on its claims for imported water. Los Angeles commanded one of the largest metropolitan areas in the country, but its continued existence hinged on access to imported water. City leaders likely worried that conceding any water in the Mono Basin might redound negatively to other claims. (310) Moreover, under the "use it or lose it" principle of appropriative water law, any sustained failure by Los Angeles to exercise those water rights could result in their legal forfeiture forever. (311)

Meanwhile, the Interagency Task Force had determined that 6,388 feet above sea level was the minimum water level required in Mono Lake to forestall ecological collapse and prevent further degradation of air resources. (312) Although they did not insist that Mono Lake be returned to its pre-diversion level of 6,417 feet, the Mono Lake advocates refused to consider any proposal that would not protect the lake at the 6,388-foot level. (313) Indeed, Mono Lake Committee leaders once explained to me that they had been counseled by negotiation experts to open with a more extreme demand that would enable them bargaining room to concede downward during negotiations with the city. However, they rejected the conventional approach in favor of one they felt was grounded in the authority of scientific evidence. (314) "Why play games?" they explained: "We weren't going to bluff; we were just going to start with what the science said was necessary, and then stay there forever." (315)

3. The California Supreme Court Decision

As negotiations failed to resolve the dispute, Mono Lake continued to decline, and the case proceeded through all levels of the judicial system to the California Supreme Court. (316) In the case before the California high court, the plaintiffs made a simple claim that threatened to undermine a century's worth of seemingly settled California water law. Channeling the insights of Professor Sax and the U.C. Davis conference scholars, the plaintiffs argued that allowing the destruction of Mono Lake through continued water diversions was impermissible, notwithstanding that these diversions were pursuant to state-approved appropriations, because it violated state obligations under the public trust doctrine. (317) The importance of the public trust doctrine had been progressively recognized in several prior California Supreme Court cases, (318) and the plaintiffs argued that the state's obligations as trustee must accordingly take precedence over its previous decisions to allow Los Angeles's diversions.

Specifically, the plaintiffs argued that the state had failed its trust obligations back in 1940, when the Water Board had first granted Los Angeles permission to divert water from the Mono Basin creeks. (319) The Water Board had granted these licenses in violation of the public trust doctrine, the plaintiffs explained, because its decision failed to account for the foreseeable harms to Mono Lake's ecologic, scenic, and recreational values. (320) At the time, the agency had openly worried about these very problems, reflecting on the earlier destruction of Owens Lake. (321) The plaintiffs contended that the Water Board had violated the state's trust obligations when it wrongly concluded that it had no alternative but to permit the exports, notwithstanding these anticipated harms. (322)

In fact, the plaintiffs argued, the public trust doctrine both empowered and obligated the Water Board to prevent these exports. Mono Lake was held by the state in trust for the public, and no organ of the state could give away its water if that would result in the destruction of the resource. (323) The argument, in essence, was that it was no more permissible for California to give away Mono Lake's waters than it was for Illinois to give away Chicago Harbor in the famous Illinois Central case. (324) The plaintiffs also argued that Los Angeles's harmful diversions should be considered an unreasonable use. (325)

DWP defended Los Angeles's rights to export Mono Basin water on grounds that the licenses were fully consistent with the clearly articulated California water law principles of prior appropriations and beneficial use. (326) The California constitution affirms that water should be put to beneficial use, (327) and much of this water was going to the highest recognized form of beneficial use--domestic use by the citizens of Los Angeles. (This, they would have argued, was hardly comparable to giving away the bed of Chicago Harbor.)

DWP also pointed to the vast legal and physical infrastructure by which water is moved all over the state of California, from watersheds with more to watersheds with less. (328) This elaborate network of water transfers is formalized by the system of licenses that confer the appropriative rights on which cities like Los Angeles have long relied. (329)

Finally, DWP argued that the well-developed body of statutory water law in California had subsumed and displaced the common law public trust doctrine. (330) After all, this is normally what happens when statutory law conflicts with the common law--as it has in vast areas of tort, contract, and criminal law. (331) Legislative pronouncements to the contrary abrogate the precedents of judge-made common law. (332) DWP also argued that the plaintiffs were not entitled to judicial relief because they had not exhausted administrative remedies. (333)

The plaintiffs thus argued that the public trust doctrine trumps the prior appropriations doctrine, while the defendants maintained that the statutorily codified principles of prior appropriation trump the common law public trust doctrine. (334) Indeed, reviewing the two doctrines in isolation reveals a set of legal principles that seem hard to reconcile; neither so much as acknowledges the other. The court openly acknowledged that "the two systems of legal thought have been on a collision course," and that it was time to resolve the issue. (335) This, then, was the critical question of first impression that the Mono Lake case presented to the justices of the California Supreme Court: What is the relationship between the public trust doctrine and the law of appropriative water rights? When they point in opposite directions, which do we follow? Which trumps the other?

In its ultimate decision, the high state court famously declined to choose. Instead, it affirmed that both doctrines remain bedrock principles within California law, and that neither displaces the other. (336) It is the obligation of the state, said the court, to navigate the requirements of both. (337) The state must act to protect the interests in navigable waters that are protected by the trust, but it must also have the power to enable appropriative rights in water for other public purposes, even if diversions harm public trust values. (338)

Critically, however, the court stated that "[a]pproval of such diversion without considering public trust values ... may result in needless destruction of those values." (339) The court directed that "before state courts and agencies approve water diversions they should consider the effect of such diversions upon interests protected by the public trust, and attempt, so far as feasible, to avoid or minimize any harm to those interests." (340)

On the facts of this case, the court agreed with the plaintiffs that the public trust doctrine had not been given its due weight in the Water Board's permitting calculus. (341) The state could not allow the Mono Lake tributaries to be diverted to the extinguishment of its public trust values without even considering the possibilities for avoiding this harm. (342) But the court also stressed that the state's most populous areas have long depended on the appropriation of water from remote locations, often to the detriment of the basin of origin. (343) Water allocation and permitting laws govern the established legal relationships in these circumstances in ways that cannot be casually disrupted. In a decision affirming that instream values are considered beneficial uses in California, (344) the court nevertheless allowed that there may be times when the public interests in diversions outweigh the public values protected by the trust. (345)

The court thus affirmed that Southern California's legitimate water needs must remain protected by appropriations law, but also that these rights are nonvested, and subject to the state's ongoing duty to supervise the impact of diversions on the navigational and environmental values associated with trust resources. (346) It concluded that the Water Board had neglected these obligations in 1940 and 1970, when it issued Los Angeles permits without even considering its implicated trust responsibilities. (347)

Accordingly, the court invalidated the licenses and remanded them to the Water Board for reconsideration in light of its decision. (348) In the new decision-making process, the Water Board was directed to balance the legitimate water needs of Los Angeles with the state's obligation to protect the scenic, ecological, and recreational values in the Mono Basin as much as feasible. (349) Finally, the court upheld its concurrent jurisdiction with the Water Board in administering issues of the public trust and water rights, affirming the plaintiffs ability to seek judicial relief without first exhausting administrative remedies. (350)

4. Legal Innovations

The central contribution of the Mono Lake case is its affirmation that--at least in California (351)--the common law public trust doctrine exerts force independently from the statutory principles of private water allocation, and that water planners must accommodate the interests protected by each. As discussed above, the court pointedly rejected the argument that the trust had been subsumed or preempted by statutory and constitutional provisions establishing the prior appropriations doctrine. (352) In addition to clarifying the relationship between the public trust and prior appropriation doctrines, however, the decision also yields several other important points of law, including its application to environmental values, non-navigable tributaries, and over time.

a. Application to Environmental Values.

Among lay audiences worldwide, the Mono Lake case is perhaps most famous for the proposition that the public trust doctrine protects values beyond the traditional boating, fishing, and swimming associated with navigable waters to also include ecological, recreational, and scenic considerations. (353) Indeed, when I would give the South Tufa tour along the southwest shore as a Mono Lake ranger, we casually extolled the decision for its extension of public trust principles to include these more modern environmental values. Only in law school did I learn that this was a bit of a local conceit; while the Mono Lake case made it famous, that expansion was really established by another case more than ten years earlier. (354)

In 1971, in Marks v Whitney (Marks), (355) the California Supreme Court affirmed the flexibility of the public trust doctrine to encompass changing public needs in trust resources, including ecological, open space, habitat, scenery, and scientific values. (356) However, Marks addressed a comparatively dry set of facts, adjudicating the conflicting rights of private parties over the construction of a wharf in trust-protected tidelands. (357) By comparison, the compelling facts of the Mono Lake case, together with the force of the more photogenic environmental values at risk there, have made it the more popular standard-bearer for the expansion. The use of the public trust doctrine to protect the vulnerable water, air, wildlife, scenic, scientific, and recreational values of the Mono Basin remains the best known feature of the Mono Lake story. (358)

b. Application to Non-Navigable Tributaries.

An especially concrete legal innovation of the Mono Lake case is that it extended the protection of the public trust doctrine from the navigable waterway itself to the non-navigable tributaries on which it relies hydrologically. (359) After all, Los Angeles wasn't directly draining the lake (which would have yielded some awfully nonpotable water!). Instead, the city was diverting the mostly non-navigable creeks that channeled snowmelt from the Sierra into the lake, replenishing it against continuous evaporation. (360) At the time, the public trust doctrine had not been applied to activity interfering with non-navigable creeks. Los Angeles could thus defend the Mono Lake lawsuit not only by arguing that the doctrine had been preempted by prior appropriations, but also that there was no interference with a waterway subject to the trust.

Nevertheless, the court accepted the hydrological relationship between the lake and its essential tributaries to construe them as one for the purpose of doctrinal protection. (361) As the court reasoned, protection of the navigable waterway of Mono Lake had to include protection of its tributaries, without which the lake would ultimately disappear. (362) This particular aspect of the court's reasoning has particular resonance to a contemporary public trust case unfolding in Northern California, where litigants are currently arguing that doctrinal protection should be extended to the non-navigable groundwater tributaries of the navigable Scott River (the Scott River case). (363)

c. Application over Time

While these are all important new points of law in the Mono Lake decision, the potentially widest-reaching legal innovation was its recognition of the state's trust responsibilities as an ongoing legal duty. (364) The court clarified that the public trust doctrine not only requires the state to protect trust resources as much as feasible when allocating water, it held that the state also has a continuing duty of supervision under the doctrine. (365) Indeed, it was this element of the decision--the Mono Lake doctrine of ongoing oversight--that empowered (and obligated) the state to revisit the permitting decision it had made approving Los Angeles's exports nearly fifty years earlier.

The consequences of this new understanding of the doctrine were potentially staggering. A state duty to revisit past allocation decisions that are compromising trust values in the present has ramifications far beyond the Mono Basin. Subjecting prior appropriations to potential revision for countervailing public trust values threatened havoc for water managers all over California, and potentially all over the western United States.

Throughout the West, large volumes of water are transported long distances in just the way the Los Angeles aqueduct exports it from the Mono Basin. (366) Just as it did in southern California, urban and agricultural development all over the arid west has depended on the ability to shift water from wetter to drier parts--and Americans have become quite good at it, at least from the engineering perspective. (367) If the Mono Lake doctrine were widely applied, all of those water licenses would suddenly become very uncertain. If public trust values were being affected in ways that hadn't been anticipated when those licenses were initially granted, then all the appropriative rights on which remote uses had developed in reliance would be up for renegotiation. For that reason, the doctrine of continuing oversight was an extremely controversial element of the decision. (368)

Perhaps for the same reason, it is also a doctrinal element that has rarely been adopted outside of California. One exception is Hawaii, where the state Supreme Court has also held that private allocation decisions do not displace the trust. (369) Indeed, Hawaii's public trust doctrine is perhaps the most protective of all American states--but it is distinguishable from that in most western states because Hawaii's doctrine is incorporated constitutionally, and the state does not follow the doctrine of prior appropriations. (370) The closest a prior appropriations state has come to embracing the Mono Lake doctrine of ongoing oversight is in Nevada, where two concurring justices suggested an important role for the public trust doctrine in a water rights case--but this analysis was not part of the majority opinion. (371) Beyond Hawaii, however, no western state has formally adopted the California requirement of continuing oversight. Several Idaho cases signaled approval of this feature of the California public trust doctrine in the years after the Mono Lake case was decided, (372) but they were subsequently (and pointedly) overruled by the state legislature. (373)

Even within California, where the doctrine remains good law, obligations of ongoing oversight have had a very limited impact on previously established water rights outside of the Mono Basin. (374) In a quantitative study of freshwater public trust litigation in California since Mono Lake, Professor David Owen concludes that outside of the Mono Basin, the doctrine has exerted almost no force on existing patterns of water use, even when serious interference with trust values are manifest. (375) He concludes that effects of the doctrine are inextricably intertwined with the force of other environmental laws, which are often more responsible for substantive results, almost exclusively at the administrative level, and most often with regard to prospective uses of water, rather than existing rights. (376)

B. The Aftermath of the Court's Decision

The California Supreme Court's decision was the seminal step toward the protection of Mono Lake, but it was only the first step--and an uncertain one at best. It required the Water Board to consider the public trust values in the Mono Basin before adjudicating Los Angeles's permits, but it did not specify how to balance the competing interests at stake. Additional litigation over the Mono Basin creeks further complicated the Water Board's task. Los Angeles would make important choices in its response to the outcome of the legal process. And the scholarly community would pass judgment as well.

1. The California Trout Litigation

Before the Water Board could respond to the court's relicensing directive, it was charged to consider a further set of statutory concerns after California Trout--joined by the National Audubon Society and the Mono Lake Committee--separately sued in California Trout v. State Water Resource Control Board (California Trout) (377) to modify DWP's diversion licenses on additional grounds. In the California Trout litigation, the plaintiffs argued that the DWP diversion dams were harming Mono Basin creeks in violation of state Fish and Game Code provisions. (378)

After determining that the plaintiffs claim had merit, the appeals court ordered the Water Board to additionally incorporate these concerns into its reconsideration of Los Angeles's permits to export from the Mono Basin. (379) Indeed, the California Trout litigation was just as critical as the earlier Mono Lake case in determining the outcome at Mono Lake, and arguably more so in terms of its ultimate impact on stream restoration requirements.

Consolidating both the Mono Lake and California Trout judicial commands into a single proceeding, the Water Board accordingly set to work determining how to assess the appropriate equipoise of so many conflicting interests. It struggled with the question over ten years of scientific inquiry, public hearings, and policy research, finally culminating in its 1994 release of the 200-page directive that would become known as Decision 1631. (388)

2. Implementation by the Water Board: Decision 1631

In the historic Decision 1631 that it released in 1994, the Water Board re-allocated water rights in the Mono Basin, modifying Los Angeles's licenses to export in accordance with the judicial orders of the Mono Lake case and the California Trout case. (381)

Following a full decade of research, evidentiary hearings, stakeholder consultation, and an exhaustive Environmental Impact Report, (382) the Water Board arrived at a compromise not unlike the original proposal by the Interagency Task Force and Mono Lakeadvocates: that water exports should be curtailed to the extent needed to enable Mono Lake to rise to the level of 6,392 feet above sea level over the next twenty years. (383) Exports were eliminated until the lake reached an elevation of 6,377 feet (up from the current low near 6,372 feet) and water exports would then be permitted on a limited, graduated basis designed to achieve and maintain the ecologically sound lake management level. (384) Once the lake reached the designated level, Los Angeles could increase diversions to a little more than thirty thousand acre-feet per year, so long as the lake level remained stable. (385) Decision 1631 also included requirements for restoration of the desiccated Mono Basin creeks and minimum instream flows going forward, and it designated Mono Lake as an Outstanding National Resource Water. (386)

The Water Board designated 6,392 feet as the recovery target because the science confirmed that this level would resolve the most serious threats to the public trust values in the Mono Basin. (387) This target would stabilize the salinity of Mono Lake at a level that would allow the ecosystem to recover. (388) The brine shrimp and alkali fly populations would reproduce successfully and maintain the base of the food web. (389) The breeding grounds of California Gulls and nesting habitat of migratory birds would be protected. (390) It would cover the most harmful salt flats that were causing air pollution problems. (391) It would protect the most scenic and recreational values associated with the lake, leaving some of the relicted lands' tufa exposed. (392) It would protect the fisheries and riparian habitat associated with the desiccated Mono Basin creeks, but some important waterfowl areas would be forsaken. And it would still allow Los Angeles to divert water---though diversions would be curtailed as needed to enable the lake to recover to the designated levels.

It was, in every respect, a compromise plan. Indeed, almost poetically, the plan would raise the lake approximately twenty vertical feet from its post-diversion low of 6,372 feet, but it would leave it twenty-five feet below its pre-diversion level of 6,417 feet--roughly in the middle.

When I left Mono Lake in the late 1990s for law school, the results of Decision 1631 were visible to the naked eye. The land bridge joining Mono Lake's north shore to the gull rookery on Negit Island was receding under water. The rangers had to pull up many legs of the old boardwalk extending the public trails down to the water's edge as the lake reclaimed formerly exposed bed. The toxic dust devils were less intense and less frequent. The lake level rose about ten feet to 6,382 feet in the first five years after the decision, raising high hopes all around--and then, sadly and suddenly, it stopped. (393)

Climate patterns have shifted in California--as elsewhere--leading to reduced snowmelt in the creeks. (394) The drought that hit California in the 2000s has intensified to epic levels in the 2010s. (395) Precipitation has not been following the modeled average conditions that Decision 1631 relied on, and so the lake did not reach 6,392 feet last year, as the Water Board had projected. (396) Even though Los Angeles has remained on a curtailed schedule of diversions, the lake level has hovered around 6,382 feet since 1998, suspended at halfway to the compromise point--and this year, for the first time in decades, it has declined below 6,380. (397)

3. Los Angeles Turns a New Page

Whether Mono Lake will continue to recover will partly depend on climatic conditions beyond human control, but it will also depend on decision making in Los Angeles, at levels both political and personal. If the recent past is any indication, there is reason to be hopeful.

Indeed, one of the favorite chapters of the Mono Lake tale is how the City of Los Angeles reacted to the various losses it encountered thus far in the story. While paling in comparison to what the Owens Valley lost--and what the Mono Basin is still trying to avoid--Los Angeles has also lost a good deal over this course of events. It lost in court, twice. It lost water rights it believed were settled decades earlier, and it lost any sense of security that its current rights are fully vested. It also lost access to a fair amount of water--twelve percent of its total supply.

To avoid these painful losses, the city fought hard to prevail on the legal issues, fearful of weakening its access to critical water imports on which it had come to rely. It declined offers of state and federal funds to experiment with water recycling and other technology that might enable it to import less water, fearful of losing any portion of its hard-fought water rights to forfeiture or abandonment. (398) But after investing so much energy in fighting an ultimately losing battle, the city finally turned a page after the Water Board's decision. Just as the citizens of Illinois forced a change in the direction its legislature took over the conveyance of Chicago Harbor, the citizens of Los Angeles embraced a new approach to the city's ongoing problem of water insecurity: conservation. (399)

After Decision 1631, Los Angeles made two critical decisions. First, and perhaps most important, the city decided not to seek judicial review of the Water Board's decision. Even though a significant portion of the city's water supply was at stake, equally significant support for restoration of Mono Lake had developed among city residents. A city official would later explain that the mayor wanted to engage a more forward-thinking environmental policy, and the decision to accept the Water Board's new allocation was consistent with this new ethic. (400) In addition, the Mono Lake Committee had worked hard to generate ideas and funding to help Los Angeles gracefully absorb the loss of Mono Basin water, and not just replace it with harmful exports from other vulnerable watersheds. (401)

Los Angeles's second critical decision was to fully embrace the conservation alternative. The city sprung to a new phase of action, experimenting with infrastructural improvements, new methods of municipal and highway barrier management, and grassroots campaigning for household water saving devices. (402) The city pushed forward with the use of recycled water for irrigation and industrial purposes.403 It sponsored neighborhood drives to trade in old toilets for low-flush models. (404) "Save Mono Lake" bumper stickers gave way to "I Save Water for Mono Lake" bumper stickers, which appeared throughout the city, and even the state. In the end, by effectively deploying these strategies, Los Angeles was able to recover all twelve percent of the water that it had lost as a result of the Mono Lake legal decisions--simply by reducing its demand. (405) And this makes the Mono Lake story one of the very rare cases in environmental law with a happy ending for both sides on the dispute.

Los Angeles remains at the forefront of water conservation efforts and has become a leader nationwide. (406) Although the population has grown substantially in the past two decades, municipal water use has remained fairly flat. (407) While the city may have earned scorn for its approach to water management at the beginning of the last century, and there is certainly still work to be done today, it nevertheless deserves credit for its approach at the beginning of the 21st century.

4. Public Trust and Distrust: The Critiques

After Mono Lake, the public trust doctrine achieved instant notoriety among environmental advocates, property rights advocates, and legal academics. Environmentalists hailed the doctrine as a means of preserving ecological treasures that might otherwise be lost. (408) Some began looking for other opportunities to apply the public trust concept in other realms of natural resources management. (409) Directly inspired by Mono Lake, India incorporated the public trust doctrine into its own constitutional order. (410) Yet the ongoing development of the public trust doctrine has also spawned serious alarm among competing constituencies, and even some environmental advocates. (411) While the doctrine remains generally popular among the public, this section briefly addresses the distrust that also emerged around the idea of the public trust, focusing on concerns about property rights, environmental protection, and legal process.

a. The Property Rights Critique

Perhaps the most immediate concerns were those raised by advocates for private property rights, alarmed that expansive use of the doctrine would result in the confiscation of private rights, in tension with public trust values. (412) Conflicts between public and private rights have manifested over water rights, (413) waterfront and wetland development, (414) the regulation of private activity on submerged lands, (416) and beach and lakefront access. (416) For example, in one of the most controversial extensions of the doctrine, the New Jersey Supreme Court held in Matthews v. Bay Head (417) that the doctrine protected public passage over private beachfront property if needed for public access to the ocean. (418) Like the California Supreme Court in Marks, the New Jersey Court in Matthews stressed that the doctrine must be construed flexibly, to respond to changing societal needs. (419)

When courts administering the trust emphasize its flexibility to adapt to changing public needs, (420) property rights advocates worry. (421) Without a clear limit on how far the public trust doctrine may intrude on seemingly settled private rights, they worry about its potential as an unlimited tool of legal opportunism that, caricatured, eats everything in its path. (422)

The property rights critique asks what, then, is the limiting principle? (423) Whenever the public decides it wants something new in a trust resource, does that mean private interests must yield, no matter how established? (424) Especially in California, where the Mono Lake case establishes an ongoing duty of supervision, the state can theoretically revisit water licenses at any time (although, as noted above, this hasn't actually happened). (425) For example, analyzing the doctrine from a law and economics perspective, Professor Lloyd Cohen criticized the doctrine as "a piece of disingenuous gimmickry" that would undermine property rights. (426)

b. The Environmental Critique

In the immediate wake of the Mono Lake case, a separate critique of the public trust doctrine emerged from within the circle of environmental advocacy. Some environmental critics were skeptical that the doctrine, with its roots in property law, would provide the best legal tools to support the unfolding environmental law movement. (427) The notion of the "public trust" relies on public ownership and oversight of natural resources to effectuate environmental protection, but owners can be fickle and shortsighted, and public participation requirements are content-neutral. (428) The trust may prohibit private monopoly, but if public opinion swings away from environmental protection at a critical moment, competing concerns may prevail. (429) After all, the same public owners advocating for environmental protection one day may find themselves longing for cheaper fuels the next.

Recognizing that the doctrine isn't invariably "green," these "green dissenters" (430) would have preferred that the legal protection of natural resources be established according to concepts of stewardship with a more explicit commitment to environmental protection. Indeed, just as the Mono Lake case was filed, executive agencies were being given new roles of responsibility for administering the major federal environmental statutes of the 1970s. (431) Environmental critics of the public trust doctrine hoped that environmental protection norms would take root in administrative law responsibilities that were more aligned with the principles of stewardship than the dominion of ownership.

For example, Professor Richard Lazarus worried that the doctrine might distract the progress of environmental law toward effectuating resource protection through more concrete state and federal mandates, arguing that it was a "romantic step backward toward a bygone era at a time when we face modern problems that demand candid and honest debate on the merits." (432) Professor William Araiza argued that a substantive commitment to environmental values would be preferable to the untethered political process implied by public trust adjudication. (433) After all, even the Mono Lake case did not require the absolute protection of Mono Lake; it simply required that the Water Board think carefully about it. (434)

c. The Legal Process Critique

Other critiques took aim at the way that the doctrine empowers judicial decision making at the expense of political decision making. (435) The doctrine expressly enables the judiciary to countermand legislative and executive decisions, even though the political branches of government are conventionally considered to be more democratic.

Public trust supporters argue that the role of judicial review is among the greatest strengths of the doctrine, enforcing necessary checks and balances among the three branches of government. (436) However, legal process critics worry that the doctrine provides insufficient guidance to decision makers, (437) and that the judiciary--prone to abstraction and elitism--will not be as responsive to the public in the same way as regularly elected legislators. (438) For example, Professor James Huffman has argued that the doctrine had been distorted by the courts beyond its appropriate boundaries, threatening both liberty and democracy. (439)

Finally, some worry about the implications of the public trust doctrine for upending the role of law in protecting settled expectations more generally. (440) Professor Barton ("Buzz") Thompson summarized generalized distrust of the public trust doctrine evocatively:

      To environmentalists and public-access supporters, the public
   trust doctrine appears to provide a relatively malleable legal tool
   to address a variety of issues involving the use and protection of
   waterways, beaches, and perhaps other important lands and
   resources.... These environmental advantages,
   however, are conservative anathema. To many conservatives, the
   public trust doctrine is an anchorless doctrine that is
   anti-democratic and an easy way to evade critically important
   property protections. (441)


Concerns about the malleability of the doctrine tap into age-old anxieties about the evolving nature of the common law--pitting the need for flexibility to meet changing public interests against the need for certainty to establish order and expectations. (442) For example, the Mono Lake doctrine of ongoing oversight stands squarely on the side of flexibility at the cost of certainty (443)--but popular resistance to that idea may also explain why it has been seldom used. (444)

C. Future Doctrinal Developments

The Mono Lake case was followed by a surge of interest in use of the public trust doctrine for environmental advocacy. (445) Following Professor Sax's broad vision, litigants and scholars sought to expand its application to other water resource issues (446) and to other critical public commons that are also subject to private appropriation. (447) Some states, like Pennsylvania, have constitutionalized broader versions of the trust that extend to additional resources. (448) Some scholars have emphasized the important role of executive agencies in administering the trust. (449) Others have pointed to the doctrine as a means of resisting takings claims against regulations protecting trust resources, (450) and some courts have agreed. (451)

Additional noteworthy developments include the public trust doctrine's application to oil and gas extraction activities impacting trust resources, its potential extension to groundwater resources, and its potential role in managing climate change.

1. Application to Oil and Gas Extraction

As discussed in Part II, the Pennsylvania Supreme Court recently invoked its constitutional version of the public trust doctrine to protect local authority to regulate fracking and perhaps other extraction activities that pose a threat to local water resources. (452) The Robinson Township decision marked a dramatic debut for Pennsylvania's constitutional doctrine, which had not previously been understood as self-executing and had never before been used to invalidate state law. (453)

Other municipalities have also attempted to assert local control over fracking, but they have been less successful--especially in states without similar public trust protections. For example, when two Colorado municipalities banned fracking within local limits, two separate state courts held their ordinances were preempted by contrary state law. (454) Notably, Colorado's public trust doctrine is far more limited than Pennsylvania's expansive trust. (455) Because Pennsylvania's law is so encompassing, its model may not be easily replicated elsewhere. Nevertheless, Robinson Township has galvanized interest in applying the doctrine to the regulation of oil and gas extraction with impacts on water resources in states with a strong public trust. (456)

2. Potential Extension to Groundwater Resources

One important innovation from the Mono Lake decision may provide the basis for a historic extension of the doctrine to groundwater resources that supply surface waters subject to the trust. Just as the Mono Lake plaintiffs had argued that the doctrine be extended to Mono's non-navigable tributaries to protect the trust values of the navigable lake, (457) plaintiffs in the unfolding Scott River case are arguing that it must be extended to protect the non-navigable tributaries of a river that is demonstrably dependent on groundwater recharge. (458)

Located in the Klamath River Basin, the Scott River is famous for hosting regionally important runs of salmon and steelhead trout. The lower reach of the river derives the majority of its flow from groundwater, and along hydrologic pathways that are perhaps unusually well established. (459) However, as locally permitted groundwater withdrawals increase, long portions of the river often run dry in the summer. (460) In the Scott River case, the plaintiffs argued that the state must curtail groundwater pumping to satisfy its public trust obligations to protect the Scott River--even though groundwater has never before been considered within reach of the public trust doctrine. (461) However, the lower court followed the Mono Lake precedent to conclude that diverting essential hydrologically connected groundwater tributaries is analogous to diverting essential non-navigable tributaries, opening the possibility that groundwater resources may also be subject to public trust protection. (462)

3. The Atmospheric Trust Project

After Mono Lake, litigants attempted to extend the doctrine to other resources, with little success. A few cases have borrowed the concept of the public trust as a basis for protecting fugitive wildlife. (463) However, most U.S. efforts to expand the common law trust beyond water resources have not been successful. (464)

Nevertheless, the principles underlying the doctrine raise legitimate questions about why the same premise of a public trust should not also apply to other critical commons resources that are also susceptible to harmful appropriation or monopoly. By the same rationale that applies public oversight to waterways, why not other natural resource commons like coral reefs, forests, or biodiversity, which also confer critical ecosystem services and represent inherent value? Perhaps these resources do not share the same common pool features of water, or draw less support from common law precedent. But if those are the relevant metrics, then what about the atmosphere?

If the premise of the public trust is that some resources are so critical that they cannot belong to anyone in particular, and must instead belong to everyone, (465) then why should it not also apply to the great air commons on which we all depend for life as surely as we depend on water? After all, the original Roman common law statement of the public trust included not only the sea and the shores of the sea as the common property of all the people, but also the air. (466) In the United States, we have already expanded the trust from the sea to the great navigable lakes and rivers that span our country. Should the atmosphere be next? Has the public trust doctrine anything to say about the natural resource crisis that would appear to eclipse all others--the harms associated with impending climate change?

Several scholars have argued that the doctrine could provide legal support for regulatory responses to climate change. Professor Robin Craig has argued that it could support adaptive management-based adaptation regimes. (467) Professor David Caron has argued that it could support climate governance to forestall sea level rise. (468) Professor Jeff Thaler and Patrick Lyons suggest it could be used to promote offshore renewable energy as a means of combating climate change. (469)

Most ambitiously, however, Professor Mary Wood has sought to apply the trust directly to atmospheric resources, reviving the Justinian concept of the public trust as encompassing not just the running waters and the sea, but also the air. (470) In urging use of the doctrine to protect endangered air resources, she argues that the state must curtail private appropriation of the atmosphere as a dumping ground for carbon pollution and other greenhouse gases. (471) She argues that the government's failure to prevent this unprecedented private appropriation is enabling short-sighted destruction of the most important public commons of all, leading to the global threats associated with rapid climate change. (472) As she might describe it, it's like giving away Chicago Harbor to self-interested private actors--only worse, because in this case, countless lives, communities, cultures, places, and species will be lost if we don't take it back soon.

As this Article goes to press, grassroots advocates are attempting to leverage Professor Wood's theory in a nationwide campaign of environmental litigation. Individual atmospheric trust lawsuits and administrative petitions have been filed all around the country in separate states and the D.C. Circuit, each seeking to establish that the atmosphere is subject to the public trust, and that the relevant regulators must therefore act to protect it from private appropriation by air polluters as a carbon sink. (473)

When government allows unfettered greenhouse gas emissions, the advocates argue, it is allowing private parties to despoil the air commons that belongs to all of us, in derogation of the public trust. (474) Arrestingly, the actual plaintiffs in each of these lawsuits are children. (475) Their argument is that it is their future, and the well being of the children that come after them, that will be squandered by our failure to protect the air commons today. (476)

Public trust lawsuits by children on behalf of future generations may be haunting, but their legal argument faces a number of uphill battles. While the claim has roots in the original Justinian Code--applying the trust to the air, the running waters, and the sea and its shores (477)--the air commons has never before been recognized as a public trust resource in the United States. Recognizing one now would mark a substantial extension of the American doctrine, and an ambitious reach in a legal arena already marked by suspicion among critics about the potentially limitless malleability of the doctrine. (478)

Even if a court does newly recognize the atmosphere as a trust resource, fashioning a meaningful judicial remedy would prove a difficult challenge. It seems unlikely that any court would order the political branches to affirmatively regulate greenhouse gases beyond existing statutory obligations, and existing obligations are weak to nascent at the moment. Professor Wood argues that courts should impose natural resource damages for trust violations, and perhaps the threat of substantial enough damages could motivate changes in the law. (479) However, courts imposing substantial fines on the political branches under a contentious doctrine of judge-made common law could raise separation-of-powers concerns that extend beyond the more ordinary judicial invalidation of political decision making. (480)

As the California Supreme Court did at Mono Lake, a court reviewing an atmospheric trust claim could order the defendant agencies to use existing statutory authority to regulate greenhouse gas emissions, or else explain why doing so was beyond their statutory authority or outweighed by competing public policy concerns. (481) This could help facilitate a process of good climate governance that more meaningfully engages with the question of sovereign responsibility to protect trust resources in the atmosphere. That said, it also indicates an additional hurdle for the atmospheric trust litigation, because the state agencies currently recognized as responsible for administering the trust arguably lack the authority necessary to manage atmospheric pollution.

The only government entity with true capacity to effectively regulate greenhouse gases is Congress, because greenhouse gas emissions are a collective action problem of the most national scope. (482) Although many states are experimenting laudably with local climate regulation to valuable ends, (483) most concede that it is a second-best solution to the ideal of a national program that could better control leakage and incentivize appropriately scaled responses. (484) However, the public trust has not yet been recognized as applying to the federal government. As discussed in Part II, there is a compelling argument that the trust is an attribute of sovereignty that should apply to any sovereign with jurisdiction over a trust resource. (485) Nevertheless, the U.S. Supreme Court made that argument even more difficult in its recent PPL Montana (486) decision, in dicta suggesting that the doctrine is a creature of state law alone. (487) The D.C. Circuit recently rejected one of the atmospheric trust cases on these grounds (and the Supreme Court declined review). (488)

For all of these reasons and potentially others, most of these lawsuits will likely fail. Indeed, several have already lost, including those filed in the state of Kansas, (489) and in the D.C. Circuit, which the Supreme Court declined to review. (490) Notably, the case proceeding in Oregon has succeeded, at least as far as the appellate court level. (491) The New Mexico Court of Appeals recently affirmed the plaintiffs contention that the state's public trust doctrine applies to the atmosphere: "We agree that Article XX, Section 21 of our state constitution recognizes that a public trust duty exists for the protection of New Mexico's natural resources, including the atmosphere, for the benefit of the people of this state." (492) Nevertheless, it declined the requested injunctive relief on grounds that the state's air quality regulatory process provided sufficient remedy. (493) There has also been mixed success in Arizona. (494)

The atmospheric trust plaintiffs must further contend with the strategic criticism that the lawsuits themselves could be harmful, because the losses may produce unfavorable precedent that could set their ultimate cause back.

Usually, the plaintiffs in strategic impact litigation make carefully tailored decisions about when and where to file, professionally counseled to aim for legal moments at which the chosen jurisdiction appears ready for the new interpretation the litigants are promoting. (495) The scattershot approach of the atmospheric trust litigation defies this approach, and could create unwelcome precedent. Bringing cases in every jurisdiction all over the country all at one time is poetic, but it runs the risk that at least some (and possibly many) could result in negative judgments that could make it even more difficult to bring more narrowly tailored public trust claims in the future.

Nevertheless, the atmospheric trust suits represent an important doctrinal development, even if most are unsuccessful. These litigants are relying on one of the most important and powerful features of the doctrine. For them, it is a legal device for starting a conversation among the three branches of government, about the sovereign obligations of government. In this time-honored way, the doctrine enables ordinary citizens to put pressure on the political branches through the judiciary, when the political branches seem not to be listening otherwise. Used appropriately, the doctrine protects the public against legislative or executive abdication, strengthening the legitimacy of the democratic process with additional checks and balances. (496)

Even if the public trust lawsuit fails, it provides citizens the political leverage they may need to start a wider societal conversation about the management of trust resources--in this case, resources threatened by climate change. Public trust litigation thus provides an additional fulcrum into the political process, and into public dialogue. Even if no atmospheric trust case ever succeeds on the merits, these children will have initiated an open conversation about climate change in terms that ordinary people can immediately understand, and to which many have responded with support. (497) The strategic critique elides the expressive power of the doctrine to spark meaningful grassroots change, translating losses in court to political momentum. After all, most successful legal movements are preceded by countless failures, before bad precedent eventually gives way to change. Some brave somebody always has to begin somewhere.

My own view is that while the legal argument may be too ambitious to succeed in the near term, the central premise is sound. Protecting a public commons from short-sighted private appropriation--as Professor Sax first urged in 1970--is the same premise that motivated the Mono Lake decision, the Illinois Central decision before it, and the Supreme Court of India thereafter. It makes sense to understand the public trust doctrine as an attribute of sovereignty at all levels. The air commons was recognized as a public trust resource as early as ancient Rome, it is an equally essential public commons, and it is equally vulnerable to harmful private appropriation. Even if the American public trust only protects water resources, government would still be obligated to manage greenhouse gas emissions, given the implications for navigable waters of the national mega-drought that has been forecast over the next century as a result of climate change. (498) Scientists project that extreme drought will threaten the public trust resources of virtually all the nation's navigable waterways--just as diversions to Los Angeles have threatened Mono Lake.

These are the same arguments that once motivated me to leave the idyllic life of a Mono Basin forest ranger to pursue the calling of law as a means of solving critical societal problems. Recognizing this, I became a signatory on the law professor amicus briefs in the atmospheric trust cases, notwithstanding concerns about the risky strategy. To be sure, these lawsuits are not without their own strategic craft; the device of children as plaintiffs is certainly a strategic move. Yet the connection between these children and the future generations they represent is not opportunistic--it is literal. Concerns about precedent aside, there is something that goes beyond strategy, perhaps even beyond poetry, about children all around the country making this powerful public trust argument with a single voice, at this pivotal moment in time, because time appears to be running out. They may not win, but something about their argument is what the public trust doctrine was made for.

V. CONCLUSION

One hundred years after the opening of the Los Angeles Aqueduct, thirty years after the California Supreme Court's decision, and twenty years after the Water Board's Decision 1631 implementing it, this is an especially good time to revisit the Mono Lake story.

After our great loss of Joe Sax last year, it is also a good time to think more about the public trust doctrine--and with newly unfolding doctrinal developments, there is much to consider. The Scott River litigation in Northern California may extend the Mono Lake doctrine to groundwater tributaries of navigable waters. (499) The Robinson Township decision by the Pennsylvania Supreme Court applied that state's constitutionalized trust to affirm local authority to regulate fracking, and possibly other extractive activities that threaten trust resources. (500) The Atmospheric Trust Litigation, whether or not it is successful in court, is opening a conversation among the public and its three branches of government about how to respond to the challenges of climate change. (501)

The Mono Lake story and these progeny provide a rich reservoir of context for considering the questions raised in Part I: 1) Who is the public trust doctrine's relevant "public"?; 2) What interests does it protect?; 3) Does the doctrine impose substantive or procedural obligations?; and 4) How does the doctrine intersect with the separation of powers? Concluding the piece, I now return to each of these questions, considering the public trust doctrine as the California Supreme Court articulated it in the Mono Lake decision. I raise them mostly to provoke further reflection, offering only preliminary thoughts in response, and recognizing that the trust continues to evolve independently throughout the United States--and indeed, the world.

A. Who Is the Public Trust Doctrine's "Public"?

First, as we recount this famous moment of public trust development, consider what we really mean by "public." Whose interests count when we talk about the "public interest" at issue here? On what scale? And what's the real difference between public and private interest? Is economic development a private or public interest? What about environmental protection? Who, then, was the relevant "public" in the Mono Lake case? Was it Lee Vining? California? The Audubon Society? The Forest Service? The scientific community? The international community?

In the Mono Lake case alone, many different publics were operating, and they appeared to have different interests. Indeed, we often gloss over this question in the United States, where we seem to have some fragile working consensus about what the public interests means. But especially in other countries where I have offered this lecture--for example, in China--my audiences are often very unsettled by this question. Isn't all law in the public interest? What is the difference between public and private interest? Is the public interest just an aggregation of private interests, or is it something more?

At least in the United States, most public trust cases suggest that the relevant public is the population of the relevant sovereign, usually the state. The New Jersey Supreme Court reached this conclusion most explicitly in the Matthews beach access case, in which it determined that the interests of state citizens who lived far away from the beach must be protected, even at the expense of the contrary interests among the more local beachfront communities. (502) In Mono Lake, the court invoked the interests of the entire state of California in preserving Mono Lake--even though millions of Los Angelenos are missing their former access to water that will now remain in a basin where only a few hundred live.

With that anti-utilitarian calculus in mind, the public interest has to be more than just the aggregation of private interests--unless we indulge an extravagantly hypothesized cost-benefit analysis of social preferences favoring environmental intangibles that we may never be able to prove. Even though the trust sounds in the concept of ownership, it has taken on undertones of stewardship, at least in California. This makes sense, given that an important difference between a state's public trust obligations and its authority to protect public welfare under the police power more generally is that the public trust doctrine puts more focus on the welfare of future generations. In that way, the "public" of the public trust doctrine requires consideration of intergenerational equity, necessarily infusing the doctrine with undertones of sustainability. (503) Nevertheless, the California high court also invoked utilitarian reasoning in affirming the need to move water great distances to the south, even when doing so causes harm to the basin of origin. Public trust resources may be damaged, but the public interest requires it.

To that end, it may be that the California Supreme Court hasn't quite worked out what the public interest means either--and more to the point, doesn't have to. By assigning the task to the Water Board to figure out, the decision suggests that the public interest is whatever the political process determines it to be, through conventional measures of consultation and consensus building. That means that the Audubon Society, the Forest Service, the scientific community, and perhaps even the international community are all able to voice their interests as public participants.

So perhaps the public trust "public" isn't really a discrete collection of people; perhaps it is defined more as a process of public expression. (Public choice theorists, cue your violins!) Cynically, one could conclude that the role of the public in public trust controversies is therefore to be played by whoever turns out to be most successful at mobilizing the political process. Less cynically, how else is democracy intended to work?

B. What Interests Does the Public Trust Doctrine Protect?

A key question that continues to bedevil the discourse is the issue of which resources should receive protection by the doctrine. Why is it that some resources seem to merit public trust consideration, while others do not? If the trust protects more than just water resources--for example, if it protects the atmosphere--then what else does it protect? All resources subject to private appropriation and monopoly? Only those that reach some critical threshold of utilitarian or biocentric concern? Should it protect pollinators, soil microbes, and other natural resources that provide critical ecosystem services? At what point, if any, is the critics' fear of doctrinal limitlessness made manifest?

In the uncontroversial context of navigable waterways, Mono Lake and Marks assigned novel trust protection to ecological, recreational, and scenic values, but neither decision provided a definitive theoretical account that would resolve these issues in other resource contexts. But even when we agree that a resource warrants public trust protection, what interests should be taken into account when balancing environmental values against the competing economic development and private property values that collide in public trust conflicts? If you were the Water Board tasked with managing the conflict between prior appropriations and the public trust at Mono Lake, what would you consider? Gross domestic product? Birds? Human Health? Wilderness? Jobs? The Water Board had to consider each of these in the Mono Lake aftermath, but which should have more or less gravity?

In reaching the balance established by Decision 1631, the Water Board was faithful to the compromise position that the court struck with regard to the integration of public trust and private appropriation principles in water allocation. The Board appeared to thoughtfully weigh the interests of birds, human health, the ecosystem, and the Mono Basin regional economy in establishing a target lake level that would mitigate the most severe harms to each of these interests. It also accounted for the municipal interests of Los Angeles, in allowing the city to divert at a reduced but steady stream once the most immediate danger to the Mono Basin ecosystem had passed--even while the system was Still under stress. Still, the diversions were so reduced--by nearly 45,000 acre-feet per year (504)--that one could reasonably conclude that birds, human health, and wilderness in the basin had trumped competing interests in Los Angeles.

Indeed, in the immediate aftermath of the court's decision, sentiment toward protecting Mono Lake ran high, even among Los Angelenos. Twenty years later, however, the lake has missed the designated 2014 lake level target. (505) In fact, it has never moved above the halfway point of designated recovery. (506) And notwithstanding the court's recognition of an ongoing duty of supervision, there has been no move to revisit the allocation--although the dropping lake level will automatically trigger reduced exports in the near future. (507) With worsening reservoir conditions, (508) Los Angeles's legitimate needs for water have also taken on new urgency. If the public interest is the political consensus of the moment, then perhaps the public interest has shifted, and 50% progress may be the new normal. Whether 50% progress should been seen as half empty or half full remains to be seen.

That the public interest may be the political consensus of the moment lends credence to the concerns of the green dissent that environmental protection would do better with firmer commitments than mere public process. (509) On the other hand, what if Los Angeles runs out of water? Some Central Valley agricultural communities without access to the municipal water grid have already done so this year, (510) and it is excruciating to watch. (Come to think of it, though with joyless irony, it looks a lot like what happened to the agricultural communities of the Owens Valley.) Is the indeterminacy of the doctrine its Achilles' heel, then--impeding certainty for both property rights and environmental protection? Or is it the genius of the doctrine--facilitating the ongoing conversation between citizens and sovereign that balances and rebalances competing interests as circumstances evolve?

C. Does the Public Trust Doctrine Create Substantive or Procedural Obligations?

Following this line of thinking, what exactly does the doctrine require of its administrators? At least as the California Supreme Court interpreted it, is there genuinely substantive content to the doctrine, in a meaningful command to protect trust values? Or is there merely a procedural requirement--similar to the procedural requirement under the National Environmental Policy Act (NEPA) (511)--to have considered them before destroying them? The Mono Lake decision orders the Water Board to protect trust resources as much as is feasible, but how do we know how much that is? If we've thought it over and decided it's not feasible, is that enough to satisfy judicial scrutiny?

The language of the decision is sparse and vague on this point, so it's hard to say definitively what substantive force there is to the command. The Mono Lake doctrine of ongoing oversight makes clear that the state may not rely on past decisions as determinative without seriously assessing their current and future consequences. And the Water Board must protect trust values as much as is feasible, perhaps appropriately punting the determination to agency experts, who can engage in whatever research and public participation is necessary to evaluate what is feasible under the circumstances. The decision doesn't provide very much guidance about what "feasible" actually means.

Still, the command does include a cognizable, if modest, substantive component. The court affirmatively requires that the resource be protected--at least as much as is feasible--and not just studied. In this respect, the California public trust doctrine is not equivalent to the information-forcing, substantively agnostic perspective that has come to be associated with NEPA. Although it may be weak in comparison to the statutory commands of other environmental protection laws, there is an identifiable, substantive commitment in the California trust to achieving as much environmental protection as possible.

Would the Water Board have satisfied the court's command, then, had it considered the issues and simply decided to renew Los Angeles's rights to divert as before? So long as it produced a solid enough record of the evidence to withstand the arbitrary and capricious standard of judicial review, a sympathetic court might have affirmed the agency against a challenge in court. On the other hand, we now know that this absolutely should not have satisfied the command to protect as much as is feasible, because more really was feasible. At least with the benefit of hindsight, we have seen that much more protection was possible, once Los Angeles undertook serious water conservation measures. So it will all come down to what kind of record the agency and plaintiffs produce, how hard a look the overseeing court takes, and perhaps how good everyone is at predicting the future at the moment of decision.

The requirement to protect at some level thus deviates from NEPA's purely procedural requirement, but it still remains unclear exactly what kind of substantive obligation is left. In keeping with California legal tradition, perhaps the trust obligation comes closer to the California Environmental Quality Act's (CEQA) (512) command--which disallows approval of an unmitigated environmentally harmful project only if the agency formally explains the overriding public considerations that outweigh the project's significant impacts. (513) Either way, much hinges on judicial and administrative discretion--but this is a doctrine that stakes its entire methodology on judicial discretion to oversee legislative and executive decision making. If we can't trust the court to do that, then what's the point of the doctrine?

Yet if the doctrine really does create substantive obligations, why has it performed so little since the Mono Lake case? (514) suppose it is possible that everything is already perfect in California, but having lived there for a number of years, I suspect that it is not. Nevertheless, consider how much more the doctrine has done since then abroad, where its substantive component has shown undeniable force in various countries in Asia, Africa, and the Americas. (515) In these international contexts, the trust sweeps with even greater aspiration, to the delight of its proponents, and the concern of its critics.

D. How Does the Public Trust Doctrine Intersect with the Separation of Powers?

Following naturally from these concerns, the public trust doctrine asks us to consider the rightful roles of all the different legal actors in accomplishing this complex decision making. What is the appropriate role of the legislature? The courts? Administrative agencies? The citizens? Who should get to make the tough calls? Is the court an appropriate check on legislative action, or is it a feckless tyrant who will undo democratic processes? How much judicial discretion are we willing to accept? And how much power should the court have over the other branches? Should it only be able to undo bad decisions, or should it be able to affirmatively assess natural resource damages, as Professor Wood proposes?

It's old legal hat by now that most policy making is appropriately legislative, because the legislature is the designated apparatus of government for hammering out public consensus among competing considerations. That said, it is new legal hat that administrative agencies are increasingly involved in the process, often by legislative invitation in broadly framed requests for implementation, and often for good reason. (516) Legislators can't be experts about all the thorny details in every narrow subject of legal concern, but agency bureaucrats are subject matter experts by design. The court helps adjudicate civil, criminal, and constitutional disputes by interpreting the laws and the past judicial precedent making sense of them. The citizens oversee the entire mechanism by participating in the political process as voters, jurors, letter-writers, public commenters, NGO lobbyists, and occasionally as plaintiffs.

The public trust doctrine engages everyone in their usual role. The legislative and executive branches coordinate in policy making and implementation until a citizen objects, filing a public trust claim. The court considers the claim in light of the available doctrine to decide whether the sovereign has abdicated a trust responsibility. If it concludes that the trust has been violated, the court simply informs the parties that the challenged government activity was ultra vires--beyond its authorized powers--and the sovereign actor revisits the decision. As a matter of public trust theory, the court doesn't invalidate political action; the court simply interprets whether the applicable doctrine allowed or prevented the challenged action from having legal force. Which makes the judicial role seem less tyrannical--although critics may legitimately worry about the expansion of judicial power under the doctrine through unchecked judicial interpretation. Then again, isn't that the normal operating process of the common law?

The separation of powers concern is certainly more muted when the doctrine is based on a constitutional or statutory source, because then the court is simply interpreting a legislative command. There is less room for judicial improvisation, and less room for criticism of judicial self-aggrandizement. But even when the court is interpreting the common law public trust doctrine, itself articulated by other judges, separation of powers concerns should not derail the doctrine.

Just as Marbury v Madison (517) had to invent judicial review of congressional acts to protect the constitutional order, (518) so the public trust doctrine was necessary to protect sovereign regulation of critical public commons from capture by private interests. And as noted above, what we casually refer to as the "common law" public trust doctrine may itself be a quasi-constitutional doctrine--or at least an inherent limit on sovereignty that should be recognized constitutionally, even if it is not expressly created by the constitution. (519) (After all, the Constitution nowhere mentions the words "equal footing," and yet we uncontroversially consider that a constitutional doctrine.) (520) The Supreme Court does not presently favor this view, (521) but as does the common law, constitutional interpretation sometimes changes with time.

If the premise of the doctrine is that some commons resources must remain in public ownership, then the public has to be able to check political activity that falls prey to political patronage or other shortsighted impulses to expropriate trust values. Throwing the bums out is an insufficient corrective if the bums have already conveyed away an irreplaceable public trust resource--like Chicago Harbor, Mono Lake, or atmospheric integrity. But within the constitutional order, the only other avenue available to aggrieved citizens is to invoke judicial review, and have their day in court. For this reason, the judicial role in public trust cases is not antidemocratic--it is a democratic corrective. It is the citizen's last stand, the last opportunity to be heard within the political process.

That the doctrine should evolve through the usual processes of the common law is necessary for the same reason the common law has always evolved. (522) As always, times change--and with them, the circumstances. The public interest, that fleeting moment of consensus within the political process, changes with new circumstances. It is the same philosophical insight that underlies hallowed legal doctrines like the Rule Against Perpetuities and others hostile to dead-hand control. The judge evaluating the public interest in a given trust resource must have the flexibility to adjust. Notwithstanding, judges should be careful to exercise the restraint customary to their offices, because there is one aspect of the public trust doctrine that makes it special among the common law.

Questions about the judicial and legislative roles with regard to the doctrine intersect with the ultimate question that faced the California Supreme Court in the Mono Lake case about which doctrine should trump--the common law public trust doctrine or the statutory doctrine of prior appropriations. It was a tricky question, because when statutes conflict with the common law, we normally conclude that the common law has been abrogated by the statute. The judge-made precedents of the common law are what the legal system uses to answer questions on which the legislature hasn't spoken--and they are usually preempted uncontroversially when the legislature finally gets around to saying otherwise. So when the court determined that the public trust doctrine had not been displaced by statutory water law, that was a significant moment--revealing what sets the public trust doctrine apart.

The decision affirms that the public trust doctrine is special among the common law, because it doesn't just state a principle--it acts as a constraint on government action, limiting what the government may or may not do. It establishes a line beyond which the government cannot go. It acts, as discussed previously, as a limit on sovereign power. (523) With that in mind, should the sovereign be able to free itself from that limit by destroying it with a statute? A few states may have come to that conclusion, by abolishing or limiting the common law public trust doctrine, as Idaho famously did by legislative enactment. (524) But most have not done so, and like California, have honored the principle that the public trust can't be easily abrogated. To change the public trust in these states would require public consent, as through constitutional amendment by referendum. (525)

In states with strong common law doctrines, then, judges bear a heightened responsibility to act carefully, because what they decide cannot easily be undone by casual legislative response. In this respect, as even the famously libertarian Professor Richard Epstein has noted, the public trust doctrine has a constitutional dimension. (526) When the Supreme Court renders a statutory interpretation that Congress doesn't like, it can always amend the statute. But when the Court determines that a congressional act violates the Constitution, the legislature has no recourse but to accept the court's judgment. Judicial public trust determinations have similar force, and must be taken equally seriously.

And yet, so they are--and the sky has not fallen. Constitutional interpretation, while important, is not exotic; this is what we regularly ask of our courts. By and large, they are good at it. Everyone can point to a judicial decision she doesn't like, but that hardly invalidates the system. Indeed, we hold out our constitutional system of judicial review as a model for the world. In which case, perhaps we should have more faith in the judicial administration of the public trust doctrine.

Returning finally to the Mono Lake story: the epic tale continues. Water continues to flow back into the lake, and also south to Los Angeles. Decision 1631 had directed that the lake reach its target level in 2014, and of course, that did not happen. (527) As this Article goes to press, news is breaking that Los Angeles will have to begin curtailing exports to 4,500 acre-feet per year--an old restriction that few had expected to see again--because the lake level on April 1, 2015 had receded to 6,380 feet. (528) But there has been less rain in California these past ten years, and it is projected that there will be even less in the future.

Perhaps the state's duty of ongoing supervision will eventually require that even the current plans for diversions must be revisited because of the drought that has prevented the Lake's recovery. On the other hand, the lake has recovered substantially from the time of the litigation, and the drought is also causing hardship for Los Angelenos that may factor in to any reconsiderations. This is the state's delicate balancing act--its ongoing task to negotiate between Los Angeles's legitimate needs for imported water and the competing environmental, cultural, and economic reasons to keep it in the Mono Basin. The requirement of this balancing act, displacing the force of an erroneous decision of the past, is itself a substantial achievement.

Nothing in the California Supreme Court opinion tells us exactly what the balance should look like, but it does tell us to think things through carefully. Bearing in mind the rich history behind the Mono Lake litigation and all the questions it continues to raise for us, let us be certain that we do. 527 528

(1) Erin Ryan, Public Trust & Distrust: Theoretical Implications of the Public Trust Doctrine for Natural Resource Management, 31 ENVTL. L. 477, 493-94 (2001) (describing the standard United States Forest Service ranger-led tour of the South Tufa trail on the southwest shore of Mono Lake).

(2) This Article is based on an extended lecture about the Mono Lake story, drawing on my own expertise as both a property and environmental law professor and as a former U.S. Forest Service ranger at the Mono Basin National Forest Scenic Area, just east of Yosemite National Park, in northeastern California.

(3) See, e.g., Michael Blumm & Thea Schwartz, Mono Lake and the Evolving Public Trust in Western Water, 37 ARIZ. L. REV. 701 (1995) (analyzing impacts of the Mono Lake case on subsequent cases and the evolving public trust doctrine nationwide); Craig Anthony (Tony) Arnold, Working out an Environmental Ethic: Anniversary Lessons from Mono Lake, 4 Wyo. L. Rev. 1 (2004) (using the Mono Lake case study to suggest that politics and public participation are as critical as formal law to environmental successes); Craig Anthony (Tony) Arnold & Leigh A. Jewel, Litigation's Bounded Effectiveness and the Real Public Trust Doctrine: The Aftermath of the Mono Lake Case, 14 HASTINGS W.-NW. J. ENVTL. L. & POL'Y 1177, 1181 (2008) (arguing that the Mono Lake case laid the foundation for a conception of the public trust that transcends the courtroom); Sherry A. Enzler, How Law Mattered to the Mono Lake Ecosystem, 35 Wm. & Mary Envtl. L. & Pol'y Rev. 413 (2011) (reviewing the significance of the Mono Lake case for public trust and environmental law at a systemic level).

(4) See, e.g., infra Parts II.A.2, IV.A.4, and IV.C.3 (discussing Robinson Township, the Scott River case, and atmospheric trust cases).

(5) Nat'l Audubon Soc'y v. Superior Court of Alpine County (Mono Lake), 658 P.2d 709 (Cal. 1983).

(6) M.C. Mehta v. Kamal Nath, (1997) 1 S.C.C. 388 (1996) (India), in I United Nations Environment Project Compendium of Judicial Decisions in Matters Related to the Environment, National Decisions 259 (1998), available at http://www.asiaiyudges.org/wpcontent/uploads/2013/10/Compendium_Judicial_Decisions_Nat_vl.pdf (discussing the role of the public trust doctrine in Indian law and quoting the California Supreme Court's description of the doctrine in Mono Lake).

(7) Mono Lake, 658 P.2d at 715.

(8) The Los Angeles Aqueduct formally opened in 1913. Id. at 713. The California Water Resources Control Board issued its decision implementing the state supreme court's decision in 1994. Mono Lake Basin Water Right Decision 1631, at 1, 6 (State of Calif. Water Res. Control Bd . Sep. 28, 1994) [hereinafter Decision 1631], available at http://www.waterboards.ca.gov/publications_forms/publications/general/docs/monolake_wr_decl631_a.pdf; see also infra Part III.B and IV.C (reviewing this history).

(9) I normally give this lecture as an illustrated photo essay, drawing on my experiences during the years that I worked at Mono Lake. I lived with U.S. Forest Service rangers, Mono Lake Committee staff, and other local residents in the tiny mountain hamlet of Lee Vining, California, nestled at 7,000 feet of elevation between the western edge of the Lake and the eastern slope of the Yosemite-Inyo Sierra crest, with a population of 315 at the time. Lee Vining is surrounded by 10,000- to 14,000-foot mountains on three out of four sides, snowed-in beyond automobile passage for more than half the year. When I lived there in the mid-1990s, before home satellites were available, there was no television and only one radio station broadcasting intermittently from Mammoth Lakes, a small ski town 30 miles to the south.

To pass the time, local residents regularly went climbing, hiking, or birding--but my friends and I invented a wholly new Mono Basin sport: aqueducting. We made it our project to find all the interesting points along the 400-mile-long Los Angeles Aqueduct, all the way from the northernmost intake in the Mono Basin down to its symbolic end at Department of Water and Power's reflecting pool in Los Angeles. The full lecture makes use of stories and photographs from these personal journeys, to understand this history up close and personally.

(10) Still, I'll never forget that when I volunteered thoughts about leaving my work as a forest ranger to become a lawyer, most of the lawyers I spoke with cried aloud that this was crazy--that they dreamed of leaving their jobs in law to become forest rangers! (Health insurance aside, there is a lot of wisdom in that reaction.)

(11) See Decision 1631, supra note 8.

(12) See, e.g., Ewa M. Davison, Enjoys Long Walks on the Beach: Washington's Public Trust Doctrine and the Right of Pedestrian Passage over Private Tidelands, 81 WASH. L. REV 813, 830-31 (2006); Joseph Sax, The Public Trust Doctrine in Natural Resource Law: Effective Judicial Intervention, 68 MICH. L. REV. 471 (1970) (laying the seminal academic foundations for the public trust doctrine as a modern legal tool to aid in the protection of natural resources).

(13) J. Inst. Proemium, 2.1.1. (T. Sandars trans., 4th ed. 1867).

(14) Davison, supra note 12, at 830-31.

(15) See Michael C. Blumm, Public Property and the Democratization of Western Water Law: A Modern View of the Public Trust Doctrine, 19 ENVTL. L. 573, 580 (1989) (discussing the public trust doctrine as "a democratizing force by (1) preventing monopolization of trust resources and (2) promoting natural resource decision making that involves and is accountable to the public").

(16) See Carol Rose, The Comedy of the Commons: Custom, Commerce, and Inherently Public Property, 53 U. CHI. L. REV. 711, 727-30 (1986).

(17) See Ill. Cent. R.R. Co. v. Illinois (Illinois Central), 146 U.S. 387, 453 (1892). The public trust doctrine has also been held to protect wildlife, groundwater resources, atmospheric resources, and potentially groundwater tributaries of navigable waters. See, e.g., Betchart v. Dep't of Fish & Game, 158 Cal. App. 3d 1104, 1106 (1984) ("California wildlife is publicly owned and is not held by owners of private land where wildlife is present."); Owsichek v. State, Guide and Control Licensing Bd., 763 P.2d 488, 495 (Alaska 1988) ("[C]ommon law principles incorporated in the common use clause impose upon the state a trust duty to manage the fish, wildlife and water resources of the state for the benefit of all the people. We have twice recognized this duty in our prior decisions." (footnote omitted)); Environmental Protection Act of 1970, Mich. Comp. Laws Ann. [section] 691.1202(1) (West 1989) (extending the public trust, via statute, to authorize legal actions "for the protection of the air" in addition to water and other natural resources); First Amended Petition for Writ of Mandamus and Complaint for Declaratory and Injunctive Relief at 2, Envtl. Law Found, v. State Water Res. Control Bd., No. 34-2010-80000583 (Cal. Sup. Ct. July 15, 2014) (seeking to extend the public trust doctrine to protect groundwater resources in California); Natural Resources and Environmental Protection Act, MICH. Comp. Laws [section] 324.1701(1) (1994), available at http://legislature.mi.gov/doc.aspx7mcl324-1701 (extending the public trust to statutorily authorize legal actions "for the protection of the air" in addition to water and other natural resources).

(18) 6 N.J.L. 1, 10 (1821) (using the public trust doctrine to prevent individuals from claiming a property interest in oyster beds in a navigable river).

(19) 41 U.S. 367, 410 (1842) ("[W]hen the Revolution took place, the people of each state became themselves sovereign; and in that character hold the absolute right to all their navigable waters, and the soils under them, for their own common use, subject only to the rights since surrendered by the Constitution to the general government.").

(20) For a more thorough history of the early American doctrine, see generally Harrison C. Dunning, The Public Right to Use Water in Place, in WATERS AND WATER RIGHTS 28-1 to 33-22 (Amy C. Kelley ed., 2009).

(21) 152 U.S. 1, 49 (1894) (affirming the substance of the common law doctrine and holding that, with regard to the territories acquired by Congress, "the title and dominion of the tide waters and the lands under them are held by the United States for the benefit of the whole people, and, as this court has often said, in cases above cited, 'in trust for the future States.'").

(22) Illinois Central, 146 U.S. at 452.

(23) See, e.g., Richard M. Frank, The Public Trust Doctrine: Assessing Its Recent Past and Charting Its Future, 45 U.C. Davis L. Rev. 665, 667 (2012) ("Simply stated, however, the doctrine provides that certain natural resources are held by the government in a special status--in 'trust'--for current and future generations. Government officials may neither alienate those resources into private ownership nor permit their injury or destruction.").

(24) See David C. Slade et al., Putting the Public Trust Doctrine to Work 6-8 (1997) (describing the distinction between jus privatum, which the state may convey, and jus publicum, which it may not).

(25) See Sax, supra note 12, at 473 (describing how citizens have brought lawsuits to enforce the trust obligations of the state).

(26) Id

(27) See Amicus Curiae Brief of Law Professors in Support of Granting Writ of Certiorari at 12, 7, Alec L. exrel. Loorz v. McCarthy, 561 F. App'x 7 (D.C. Cir. 2014) (No. 14-405), cert, denied, 135 S. Ct. 774 (2014) [hereinafter Professor Amicus Brief] (discussing the public trust doctrine as an attribute of sovereignty).

(28) 146 U.S. 387 (1892).

(29) Id. at 438-39 (making "a grant by the State, in 1869, of its right and title to the submerged lands, constituting the bed of Lake Michigan").

(30) Joseph D. Kearney & Thomas W. Merrill, The Origins of the American Public Trust Doctrine: What Really Happened in Illinois Central, 71 U. CHI. L. REV. 799, 818-23 (2004) (discussing the railroad's improvements to the lakeshore); see also Crystal Chase, The Illinois Central Public Trust Decision and Federal Common Law: An Unconventional View, 16 Hastings W.-NW. J. ENVTL. L. & POL'Y 113,126 (2010) (same).

(31) See Kearney & Merrill, supra note 30, at 860-77 (discussing the enactment of the Lake Front Act of 1869); see also 2 Journal of the Senate of the Twenty Sixth General Assembly of the State of Illinois 922 (1869) (noting the Senate's passage of the House's version of the bill, enacting the Act).

(32) See Kearney & Merrill, supra note 30, at 875.

(33) Compare Sax, supra note 12, at 490 (arguing that the conveyance could not be justified by any public benefit), with Kearney & Merrill, supra note 30, at 893 ("[A]lthough the documentary record from 1869 cannot be said definitely to establish ... corrupt means ... it probably leans in that direction.").

(34) See Kearney & Merrill, supra note 30, at 805-06, 875.

(35) Illinois Central, 146 U.S. 387, 449 (1892) ("On the 15th of April, 1873, the legislature of Illinois repealed the act.").

(36) Id. at 433, 439.

(37) Id. at 438-39.

(38) Id. at 450-51.

(39) Boiling down the legal jargon, the railroad's claim would have been well understood--by any five-year-old--under the hallowed doctrine of "No Backsies."

(40) See U.S. Const, amend. V.

(41) See, e.g., Richard A. Epstein, The Public Trust Doctrine, 7 CATO J. 411, 422-26 (1987); Lloyd R. Cohen, The Public Trust Doctrine: An Economic Perspective, 29 Cal. W. L. Rev. 239, 246 (1992).

(42) See, e.g., Erin Ryan, Palazzolo, The Public Trust, and the Property Owner's Reasonable Expectations: Takings and the South Carolina Marsh Island Bridge Debate, 15 SOUTHEASTERN ENVTL. L.J. 121, 137-40 (2006) (discussing use of the public trust doctrine to defend takings claims by defusing the reasonableness of claimants' expectations).

(43) See Kearney & Merrill, supra note 30, at 811 n.54 (explaining this popular misconception).

(44) Illinois Central; 146 U.S. 387, 438-39 (1892) (stating the railroad's claims); 111. Cent, R.R. Co. v. Chicago, 176 U.S. 646, 657-67 (1900) (dismissing the railroad's contract rights claim after determining that its charter did not convey the disputed lands).

(45) Illinois Central, 146 U.S. at 439.

(46) Id.

(47) Id. at 453 ("The trust devolving upon the State for the public, and which can only be discharged by the management and control of property in which the public has an interest, cannot be relinquished by a transfer of the property."). Of note, Justice Field explained that the trust extended to Chicago Harbor because it was "a subject of public concern to the whole people," leaving open the possibility, embraced by later scholars and litigants, that the same rationale should apply to other commons resources also vulnerable to monopolization. Id. at 455; see also MICHAEL C. BLUMM & MARY CHRISTINA WOOD, THE PUBLIC TRUST DOCTRINE IN ENVIRONMENTAL AND NATURAL RESOURCES LAW 72 (2013) (discussing Illinois Central and various scholars' interpretations of the case); infra Part IV. C (discussing the Atmospheric Trust Project).

(48) See Illinois Central, 146 U.S. at 453 ("The control of the State for the purposes of the trust can never be lost....").

(49) See Kearney & Merrill, supra note 30, at 799 (outlining the history of the case in light of its importance in modern public trust theory).

(50) See generally Robin Kundis Craig, A Comparative Guide to the Eastern Public Trust Doctrines: Classifications of States, Property Rights, and State Summaries, 16 PENN. ST. ENVTL. L. REV. 1 (2007) (comparing eastern states' public trust doctrines); Robin Kundis Craig, A Comparative Guide to the Western States' Public Trust Doctrines: Public Values, Private Rights, and the Evolution Toward an Ecological Public Trust, 37 ECOLOGY L.Q. 53 (2010) (comparing western states' public trust doctrines); ALEXANDRA B. KLASS & LING-YEE HUANG, RESTORING THE TRUST: WATER RESOURCES AND THE PUBLIC TRUST DOCTRINE, A MANUAL FOR ADVOCATES 21-24 (2009), available at http://www.progressivereform.org/articles/CPR_Public_Tmst_Doctrine_Manual.pdf (comparing the sources of various states' public trust doctrines); Michael C. Blumm et al., The Public Trust Doctrine in Forty-Five States (2014), available at http://papers.ssm.com/sol3/papers.cfm7abstract_ids2235329 (analyzing the public trust doctrines of 45 states); Ctr. for Progressive Reform, Restoring the Trust: An Index of State Constitutional and Statutory Provisions and Cases on Water Resources and the Public Trust Doctrine (2009), available at http://www.progressivereform.org/articles/Pub Trust_State_table_2009.pdf.

(51) See, e.g., Marks v. Whitney (Marks), 491 P.2d 374, 380 (Cal. 1971) (finding increasing recognition that one of the most important uses of tidelands protected by the doctrine is "the preservat ion of those lands in their natural state, so that they may serve as ecological units for scientific study, as open space, and as environments which provide food and habitat for birds and marine life, and which favorably affect tire scenery and climate of the area").

(52) See Barton H. Thompson, Jr., Environmental Policy and State Constitutions: The Potential Role of Substantive Guidance, 27 Rutgers L.J. 863, 866 (1996) ("[T]he 'public trust' doctrine ... plays a constitutional role in most states even though less than a handful of states refer to the trust in the constitution itself.").

(53) Fla. Const, art. X, [section] 11.

(54) Haw. Const, art. XI, [section] 1.

(55) In re Water Use Permit Applications (Waiahole Ditch), 9 P.3d 409, 445 (Haw. 2000) (holding that the state water code "does not supplant the protections of the public trust doctrine").

(56) Id. ("[T]he public trust doctrine applies to all water resources without exception or distinction.").

(57) Pa. Const, art. I, [section] 27.

(58) Robinson Twp. v. Commonwealth, 83 A.3d 901, 919-20 (Pa. 2013).

(59) Id. (noting that "a political subdivision has a substantial, direct, and immediate interest in protecting the environment and the quality of life within its borders" and that "[t]he protection of environmental and esthetic interests is an essential aspect of Pennsylvanians' quality of life and a key part of local government's role").

(60) See John C. Dernbach, The Potential Meanings of a Constitutional Public Trust, 45 Envtl. L. 257, 464-65 (2015).

(61) Id.

(62) See, e.g., Jeffrey S. Silvyn, Protecting Public Trust Values in California's Waters: The Constitutional Alternative, 10 UCLA J. Envtl. L. & Pol'Y 355 (1992) (comparing California's common law and constitutional public trust rights, and concluding that the latter is more expansive).

(63) Alec L. ex rel. Loorz v. McCarthy, 561 F. App'x 7, 8 (D.C. Cir. 2014). But see Michael Blumm & Lynn Schaffer, The Federal Public Trust Doctrine: Misinterpreting Justice Kennedy and Illinois Central Railroad, 45 Envtl. L. 257, 400-01 (2015) (arguing that the D.C. Circuit is incorrect on this point).

(64) See, e.g., Jan S. Stevens, The Pubhc Trust and In-Stream Uses, 19 Envtl. L. 605, 609 (1989) (arguing that the public trust is an inalienable attribute of state sovereignty).

(65) See, e.g., MARY CHRISTINA WOOD, NATURE'S TRUST]; ENVIRONMENTAL LAW FOR A NEW ECOLOGICAL AGE 133-36 (2014) [hereinafter Nature's Trust]; Mary Christina Wood, Advancing the Sovereign Trust of Government to Safeguard the Environment for Present and Future Generations (Part I): Ecological Realism and the Need for a Paradigm Shift, 39 Envtl. L. 43, 74 (2009) [hereinafter Wood, Part I]; Mary Christina Wood, Advancing the Sovereign Trust of Government to Safeguard the Environment for Present and Future Generations (Part II): Instilling a Fiduciary Obligation in Governance, 39 ENVTL. L. 91, 135-36 (2009) [hereinafter Wood, Part II] (suggesting avenues for Congress to meet its public trust responsibilities); Blumm & Schaffer, supra note 63, at 399 (arguing that "there is considerable precedent applying the public trust doctrine to the federal government"); Blumm et al., Renouncing the Public Trust Doctrine: An Assessment of the Validity of Idaho House Bill 794, 24 ECOLOGY L.Q. 461, 494 ("[T]he public trust is grounded in the federal constitutional equal footing doctrine ..."); Epstein, supra note 41, at 426 (asserting that the constitutional nature of the trust limits sovereign authority over public property in the same way the takings clause limits sovereign authority over private property).

(66) See, e.g., Blumm & Schaffer, supra note 63, at 405; see also infra Part IV.C.3 (discussing possibility of an atmospheric trust theory).

(67) See Nature's Trust, supra note 65, at 136 (arguing that federal trust obligations should apply to protect the atmosphere against private appropriation as a disposal site for greenhouse gas pollution).

(68) Blumm & Schaffer, supra note 63, at 399 ("The trust doctrine, properly understood, is an inherent limit on all sovereigns, not merely state sovereigns."); NATURE'S TRUST, supra note 65, at 133-36.

(69) See NATURE'S TRUST, supra note 65, at 133-36.

(70) U.S. CONST, art. IV, [section] 3, cl. 1.

(71) See Coyle v. Smith, 221 U.S. 559, 566 (1911) (interpreting the equal footing clause).

(72) 43 U.S.C. [section][section] 1301-1315 (2012).

(73) Id. [section][section] 1311-1312 (discussing state authority over submerged lands and seaward boundaries).

(74) One way of viewing this is that in the equal footing conveyances, the federal government itself imposed the trust on the states. See Blumm & Schaffer, supra note 63 (discussing Justice Kennedy's reference to the equal footing doctrine in Idaho v. Coeur d'Alene Tribe and what it means for the public trust doctrine's origins).

(75) See Blumm et al., supra note 65.

(76) Blumm & Schaffer, supra note 63; NATURE'S TRUST, supra note 65, at 133-36.

(77) Blumm & Schaffer, supra note 63; NATURE'S TRUST, supra note 65, at 133-36.

(78) PPL, Montana, L.L.C. v. Montana, 132 S. Ct. 1215, 1235 ("[T]he public trust doctrine remains a matter of state law."); cf. Alec L. v. McCarthy, 135 S. Ct. 774 (2014) (denying certiorari to address whether there is a federal public trust doctrine). See infra Part IV.C.3, further discussing these arguments.

(79) See Christine Klein et al., Modernizing Water Law: The Example of Florida, 61 FLA. L. REV. 403, 406 (2009) ("The wetter eastern states ... view the right to use water as an attribute of the ownership of riparian land. This is primarily a torts regime, prohibiting one riparian landowner from inflicting unreasonable harm upon another. In contrast, the arid western states historically have followed the prior appropriation dbctrine, protecting the right to use water according to temporal priority of use.").

(80) Id. at 407.

(81) In the traditional common law doctrine, water was shared equally by all riparian landowners. See RESTATEMENT (SECOND) OF TORTS [section] 858 cmt. a., illus. 1 (1979). In states that adopt regulated riparianism statutes, most privileges associated with riparian ownership are eliminated. See Klein et al., supra note 79, at 411-12.

(82) See Klein et al., supra note 79, at 410.

(83) Id. at 408.

(84) Id.

(85) Id. at 408-09.

(86) See, e.g., Irwin v. Phillips, 5 Cal. 140, 147 (1855) (involving the overlapping nature of appropriative rights).

(87) See Steven E. Clyde, Marketplace Reallocation in the Colorado River Basin: Better Utilization of the West's Scarce Water Resources, 28 J. LAND RESOURCES & ENVTL. L. 49, 57 (2008) (explaining the importance of the historic right to return flows); Barton H. Thompson, Jr. et al., LEGAL CONTROL OF WATER RESOURCES: CASES AND MATERIALS 224-27 (5th ed. 2013) (discussing the requirements for maintaining a permit).

(88) Id. at 215-18.

(89) Id. at 215-16.

(90) In California, the owners of land abutting watercourses hold some traditional riparian rights, which coexist with the more abundant appropriative rights that are unconnected to riparian land ownership but subject to similar requirements of reasonable and beneficial use. See Thompson et al., supra note 87, at 200 (discussing California's hybrid system of water law); see also Cal. Const, art. X, [section] 2 (confirming the protection of riparian rights and discussing the requirement of beneficial use). However, in California, conflicts between riparian and appropriative rights are still governed by priority in time (in that riparian rights can be trumped by appropriations that came first), and prior appropriations remains the defining doctrinal approach in the state. See THOMPSON ET al., supra note 87, at 208 (explaining how the doctrines interact with one another in California); see also John Franklin Smith, The Public Trust Doctrine and National Audubon Society v. Superior Court: A Hard Case Makes Bad Law or the Consistent Evolution of California Water Rights, 6 Glendale L. Rev. 201, 207-09 (1984) (outlining the history of California's dual water rights system).

(91) See, e.g., Norman K. Johnson & Charles T. DuMars, A Survey of the Evolution of Western Water Law in Response to Changing Economic and Public Interest Demands, 29 Nat. Resources J. 347, 367-71 (1989) (considering ramifications of the public trust doctrine for the future of western, prior appropriations-based water law).

(92) See Jan S. Stevens, supra note 64, at 612-14 (discussing the relationship between the public trust and prior appropriations doctrines); Timothy J. Conway, National Audubon Society v. Superior Court: The Expanding Public Trust Doctrine, 14 ENVTL. L. 617, 630-33 (1984) (analyzing the state court's reconciliation of the public trust and prior appropriations doctrines in Mono Lake);, Arnold & Jewel, supra note 3, at 1181 (same).

(93) See Brian E. Gray, Ensuring the Public Trust, 45 U.C. DAVIS L. Rev. 973, 974 (2012) (discussing Mono Lakds establishment of an environmental baseline in the management of public resources, and how economic pressures limit further expansion).

(94) Cynthia L. Koehler, Water Rights and the PubUc Trust Doctrine: Resolution of the Mono Lake Controversy, 22 ECOLOGY L.Q. 541, 577-82 (1995) (discussing competing interests in the Water Board's reallocation decision-making process).

(95) HILDA BLANCO ET AL., U.S.C. CENTER FOR SUSTAINABLE CITIES, WATER SUPPLY SCARCITY IN SOUTHERN CALIFORNIA: ASSESSING WATER DISTRICT LEVEL STRATEGIES vii, xiv (2012), available at http://sustainablecities.usc.edu/quicklinks/H%20Blanco%20WSSC%20Exec%20Summary%2012%202012.pdf.

(96) U.S. Census Bureau, State & County QuickFacts: Los Angeles County, California, http://quickfacts.census.gov/qfd/states/06/06037.html (last visited Apr. 17, 2015).

(97) See Kai Ryssdal, The Aqueduct That Gave Rise to Los Angeles, MARKETPLACE (AMERICAN PUBLIC MEDIA), Mar. 31, 3015, http://www.marketplace.org/topics/sustainability/big-book/aqueduct-gave-rise-los-angeles (last visited Apr. 17, 2015) ("As early as 1894, the city faced severe water shortages. Engineers estimated that natural sources serving the Los Angeles basin could support a population of 200,000 or so, in typical years."); MARC REISNER, CADILLAC DESERT: THE AMERICAN WEST AND ITS DISAPPEARING WATER 53, 61-62 (1993) (describing the Los Angeles River as the first local source of water and how reliance on it became untenable as the population grew).

(98) See DAVID RIPEN, California in the 1930s: The WPA GUIDE TO THE GOLDEN STATE 59 (2013) (describing successful efforts to increase immigration to the City of Los Angeles in the late 19th century).

(99) See REISNER, supra note 97, at 53, 60 (describing Los Angeles's water sources in the late 19th century).

(100) Id. at 62 ("By 1900, Los Angeles' population had gone over 100,000; it doubled again within four years. During the same period, the city experienced its first severe drought.... In late 1904, the newly created Los Angeles Department of Water and Power issued its first public report. 'The time has come,' it said, 'when we shall have to supplement the supply from some other source.'").

(101) See California: Physical Features, http://www.csun.edu/~cfe/maps/CA_Physical.p5lf (last visited Apr. 17, 2015).

(102) Id.

(103) See Cal. Nev. River Forecast Ctr., CNRFC Interactive Map Interface: Rivers, http://www.cnrfc.noaa.gov (last visited Apr. 17, 2015).

(104) See Sierra Club, Los Angeles Depends on Imported Water, https://angeles2.sierraclub.org/los_angeles_depends_imported_water (last visited Apr. 17, 2015) (explaining that aqueduct construction continued through the twentieth century and currently sources from the Colorado River and two Northern California locations).

(105) Univ. of Houston: Earth and Atmospheric Sciences, Current Research Projects: Neogene Tectonics of Southern California, fig. 1, http://www.geosc.uh.edu/people/faculty/tom-bjorklund/current-research/index.php (last visited Apr. 17, 2015) (showing the Los Angeles Basin bordered by the Santa Monica Mountains, San Gabriel Mountains, Santa Ana Mountains, and the Pacific Ocean).

(106) See Sierra Club, supra note 104 (noting that the Colorado River Aqueduct supplies water to L.A.).

(107) See Ctr. for Land Use Interpretation, California Aqueduct East Branch, http://clui.org/ludb/site/california-aqueduct-east-branch (last visited Apr. 17, 2015) (explaining that the California Aqueduct brings water south to the agricultural industry of the Central Valley and Los Angeles).

(108) Sierra Club, supra note 104.

(109) See Louis Sahagun, "There It Is--Take It": A Story of Marvel and Controversy, L. A. TIMES, Oct. 28, 2013, http://graphics.latimes.com/me-aqueducl/ (last visited Apr. 17, 2015) (describing the path and history of the Los Angeles Aqueduct).

(110) REISNER, supra note 97, at 62-63, 91.

(111) Id. at 61-63.

(112) Id. at 59.

(113) See id. at 58-59 (explaining that the few rivers draining from the arid East Slope of the Sierra Nevada range are generally small; however, the Owens River, flanked by two mountain ranges, is the exception).

(114) See Cal. Water Sci. Ctr., Evaluation of the Hydrologic System and Selected Water-Management Alternatives in the Owens Valley, California, http://ca.water.usgs.gov/owens/reportTiydro_system_2surface.html (last visited Apr. 17, 2015) (explaining that precipitation runoff from the Sierra Nevada feeds into the Owens River).

(115) REISNER, supra note 97, at 59.

(116) And one where I still fondly remember getting hypothermia while attempting to inner tube it one sunny day in July! Some years later, beginning in the 2000s, restoration efforts have apparently resurrected some of the Owens River below the dam. See Louis Sahagun, Tule Vegetation Infests Lower Owens River, L.A. Times, July 7, 2006, http://articles.latimes.com /2011/jul/25/local/la-me-tules-20110725 (last visited Apr. 17, 2015) (reporting that restoration efforts, which began in 2006, have brought water and wildlife back to the Owens River).

(117) REISNER, supra note 97, at 61.

(118) CAL. DEP'T OF WATER RESOURCES, THE IMPORTANCE OF THE SALTON SEA AND OTHER TERMINAL LAKES IN SUPPORTING BIRDS OF THE PACIFIC FLYWAY 1, available at http://www.water.ca.gov/saltonsea/historicalcalendar/docs/TerminalLakes.pdf (describing the geologic processes that intensify salinity in terminal lakes with freshwater tributaries).

(119) See id.

(120) Owens Valley Comm., Owens Lake Birds, http://www.ovcweb.org/owensvalley/owens lake.html (last visited Apr. 17, 2015).

(121) Id.

(122) See, e.g., id. (quoting Joseph Grinnell, who visited the lake in 1917: "'Great numbers of water birds are in sight along the lake shore--avocets, phalaropes, ducks. Large flocks of shorebirds in flight over the water in the distance, wheeling about show in mass, now silvery now dark, against the gray-blue of the water. There must be literally thousands of birds within sight of this one spot.'").

(123) Biographical Information: Joseph Barlow Lippincott, available at http://www.owensvalleyhistory.com/stories3/lippincott_biography.pdf (extracted from the "Memoir" on Lippincott prepared by Kenneth Q. Volk and Edgar Alan Rowe that appeared in the 108 Transactions of the American Society of Civil Engineers 1543-50 (1943)).

(124) Id.

(125) Id.

(126) Id.

(127) Sahagun, supra note 109.

(128) Id.

(129) REISNER, supra note 97 at 73-74; CADILLAC DESERT: THE AMERICAN WEST AND ITS DISAPPEARING WATER AND THE TRANSFORMATION OF NATURE (Columbia TriStar Television 1997).

(130) CHINATOWN (Paramount Pictures 1974).

(131) JOEL KOTKIN & ERIKA OZUNA, THE CHANGING FACE OF THE SAN FERNANDO VALLEY 8 (2002), available at http://publicpolicy.pepperdine.edu/davenport-institute/content/reports/ehangingface.pdf.

(132) REISNER, supra note 97, at 72.

(133) Id. at 73-74.

(134) Id. at 75 (describing the syndicate of investors that purchased an option on the Porter Land and Water Company, which owned the greater part of the San Fernando Valley).

(135) Eric Malnic, The Aqueduct: DWP Smoothes Out Rough Edges on the 74-Year Old Engineering Marvel, LA Times, Oct. 18, 1987, http://articles.latimes.com/1987-10-18/local/me15046_l_los-angeles-river (last visited Apr. 17, 2015).

(136) BD. OF PUB. SERV. COMM'RS OF THE CITY OF L.A., CONSTRUCTION OF THE LOS ANGELES AQUEDUCT FINAL REPORT 271 (1916).

(137) See Henry H. Thomas, Construction---River Diversion, http://community.dur.ac.uk/~des0www4/cal/dams/cons/conss2.htm (last visited Apr. 17, 2015).

(138) See Malnic, supra note 135 (discussing the diversion dam 30 miles south of Bishop, California).

(139) Inyo Cnty. Water Dep't, Lower Owens River Project, http://www.inyowater.org/LORP/default.htm (last visited Apr. 17, 2015) (describing efforts to restore a dewatered 62-mile stretch of the Lower Owens River below the diversion dam). For more information on Owens Valley restoration projects, see the Memorandum of Understanding Between L.A. Dep't of Water and Power, the Cnty. of Inyo, Cal. Dep't of Fish and Wildlife, Cal. State Lands Cmm'n, the Sierra Club, and the Owens Valley Comm., available at http://www.inyowater.org/LORP/DOCUMENTS/1997MOU.pdf.

(140) See Malnic, supra note 135.

(141) See Andrea Ford, Recycling Water: Environment: Bicyclists Are Carrying L.A. Water to Mono Lake in a Symbolic Effort to Rehydrate1 It. They Also Call Attention to DWP Vote that May Reward Conservationists, L.A. TIMES, Sep. 1, 1992, http://articles.latimes.com/1992-0901/local/me-6794_l_niono-lake (last visited Apr. 17, 2015) (describing an event in which ninety cyclists carried bottles of water from DWP's reflecting pool 350 miles north to symbolically repatriate it to Mono Lake).

(142) See REISNER, supra note, 97 (discussing how water rights were necessary for the Owens Valley Project).

(143) See supra notes 79-94 and accompanying text (discussing the doctrines of prior appropriations and riparian rights, and the current doctrine for California water law).

(144) See Scott Harrison, Dynamite Attacks on the Los Angeles Aqueduct, L.A. TIMES, Feb. 6, 2013, http://framework.latimes.eom/2013/02/06/los-angeles-aqueduct-2/#/0 (last visited Apr. 17, 2015) (discussing how Los Angeles officials had to buy land and water rights in the Owens Valley).

(145) See supra notes 84-90 and accompanying text (discussing the law of prior appropriations).

(146) Local rebellions following the onset of water exports from the valley suggest that this perception was accurate. See Malnic, supra note 135.

(147) REISNER, supra note 97, at 91.

(148) See Malnic, supra note 135 (discussing how city officials began to quietly buy up water rights).

(149) REISNER, supra note 97, at 79 (discussing how the Bureau of Reclamation project in Owens Valley complicated the Los Angeles Aqueduct project); see also Malnic, supra note 135 ("[OJthers successfully lobbied Congress and President Theodore Roosevelt to abandon plans for a federal reclamation and irrigation project there.").

(150) See, e.g., REISNER, supra note 97, at 90 (discussing how farmers who did not originally sell out were eventually forced to do so).

(151) Sahagun, supra note 109.

(152) REISNER, supra note 97, at 86.

(153) See id. at 100-01 (discussing how DPW "sank wells and began depauperating the aquifer" and that Los Angeles refused to limit its groundwater pumping).

(154) Id. .at 100.

(155) Sahagun, supra note 109.

(156) See id. (explaining that tensions were high between Los Angeles and the Owens Valley, and that the aquifer was dynamited over a dozen times in the 1920s in citizen rebellions).

(157) See Harrison, supra note 144 (describing incidents at the Alabama Gates and No Name Canyon, among others).

(158) Id.

(159) Cf. Reisner, supra note 97, at 95 (discussing public sympathy for Owens Valley fanners).

(160) Los Angeles Dep't of Water and Power, A Legacy of Safe-Keeping, INTAKE, Nov. 2013, at 53-54, available at http://www.laaqueductl00.com/wp-content/uploads/IAA100Issue.pdf.

(161) Harrison, supra note 144; see also Louis Sahagun, Los Angeles Aqueduct Bomber Reveals His Story, L.A. TIMES, Oct. 30, 2013, available at http://www.latimes.com/local/la-me-claqueduct-bomber-20131030-dto-htmlstory.html#axzz2jDMnv8W0 (describing the 1976 bombing of an aqueduct gate).

(162) See Elson Trinidad, A Self-Guided Tour of the Los Angeles Aqueduct, KCET, Nov. 4, 2013, http://www.kcet.org/news/redefine/revisil/commentary/concrete-and-chaparral/a-self-guid ed-tour-of-the-los-angeles-aqueduct.html (last visited Apr. 17, 2015) (describing water pumps surrounded by high chain link fences).

(163) See REISNER, supra note 97, at 100.

(164) See Sahagun, supra note 109.

(165) See Marith C. Reheis, Dust Deposition Downwind of Owens (Dry) Lake, 1991-1994--Preliminary Findings, 102 J. Geophysical Res. (Atmospheres) 25,999-26,008 (1997) (describing the post-aqueduct deposits of minerals accumulated in Owens Lake over thousands of years).

(166) REISNER, supra note 97, at 101; Kirk Siegler, Owens Valley Salty as Los Angeles Water Battle Flows into Court, NPR, Mar. 11, 2013, http://www.npr.org/2013/03/11/173463688/owensvalley-salty-as-los-angeles-water-battle-flows-into- court (last visited Apr. 17, 2015).

(167) See, e.g., Reheis, supra note 165 (describing Owens Lake in a dust disposition study as the "Owens (dry) Lake").

(168) See Stewart Green, Mount Whitney: Highest Mountain in California, About.COM, http://climbing.about.com/od/mountainclimbing/a/MtWhitneyFacts.htm (last visited Apr. 17, 2015).

(169) MARITH REHEIS ET AL., POTENTIAL HEALTH HAZARDS OF OWENS LAKE DUST? (2003), available at http://esp.cr.usgs.gov/projects/sw/swdust/pdfs/toxic_dust_poster.pdf.

(170) Id. ("Mineral dusts from the desiccated playa of Owens Lake ... contain elevated concentrations of many metals known to have toxic effects....").

(171) Sarah Kittle, Great Basin Unified Air Pollution Control District, Survey of Reported Health Effects of Owens Lake Particulate Matter, http://www.gbuapcd.org/Information/Owens LakeParticulateMatterHealthEffects.htm (last visited Apr. 17, 2015) (discussing studies that have found positive associations between particulate matter and lung cancer).

(172) 42 U.S.C. [section][section] 7401-7671q (2012).

(173) U.S. Envtl. Prot. Agency, Owens Valley, CA Particulate Matter Plan, http://www.epa.gov/region9/air/owens/ (last visited Apr. 17, 2015) (describing Owens Lake as "the nation's worst particulate air pollution problem").

(174) Richard L. Forstall, U.S. Census, California: Population of Counties by Decennial Census: 1900 to 1990 (Mar. 27, 1995) (showing population growth from 11,684 in 1960 to 18,281 in 1990), http://www.census.gov/population/cencounts/cal90090.txt; U.S. Census Bureau, State and County QuickFacts: Inyo County, http://quickfacts.census.gov/qfd/states/06/06027.html (last visited Apr. 17, 2015) (showing current population of 18,410).

(175) See Louis Sahagun, New Dust-Busting Method Ends L.A. 's Longtime Feud with Owens Valley, L.A. TIMES, Nov. 14, 2014, http://www.latimes.com/science/la-me-1115-owens-20141115-story.html (last visited Apr. 17, 2015) (describing new and former methods of containing lake bed dust).

(176) Id

(177) Id. (noting that the new method saves enough water to supply 150,000 Los Angeles residents per year).

(178) See Reisner, supra note 97, at 61-62.

(179) Id. at 98. The St. Francis Dam was constructed in part to ensure supply if seismic activity along the San Andreas fault disrupted the aqueduct. See Kevin Roderick, Dam Disaster Killed 450, Broke Mulholland, L.A. TIMES, Oct. 12, 1999, http://articles.latimes.com/1999/oct/12/local/me-21385.

(180) See Michael E. Martinet, Section 6: Flooding Hazards in the City of Downey, in CITY of Downey Natural Hazards Mitigation Plan 11, Section VI (Emergency Planning Consultants ed. 2004), available at http://www.downeyca.org/_blobcache/0000/0002/2401.pdf (quoting a contemporaneous report of the disaster).

(181) See Scott Harrison, St. Francis Dam Collapse, L.A. Times, Mar. 12, 2013, available at http://framework.latimes.eom/2013/03/12/st-francis-dam-collapse/#/l.

(182) Id.

(183) Special to the New York Times, 274 Perish, 700 Missing in Torrent Loosed by Bursting California Dam; Flood Engulfs Victims as They Sleep, N.Y. Times, Mar. 14, 1928, at 1. Note that this article appears to misstate the date of the incident as March 13, 1928, and most other sources report the date as March 12, 1928. See, e.g., Martinet, supra note 180; Harrison, supra note 181; Roderick, supra note 179.

(184) See Roderick, supra note 179.

(185) Id. (describing a wall of water ten stories high).

(186) See Martinet, supra note 180 (quoting a contemporaneous report of the disaster).

(187) See id; Harrison, supra note 181; Roderick, supra note 179 (describing the devastation).

(188) See Roderick, supra note 179.

(189) Id.

(190) Jan Silver Maguire, Water Triumphs and Tragedies, 77 AQUEDUCT MAG. (2006), available at http://www.mwdh2o.com/Aqueduct7may_06/article_03_01.html.

(191) The actual figure in 2015 U.S. dollars is $273,341,520. See Consumer Price Index Inflation Calculator, http://data.bls.gov/cgi-bin/cpicalc.pl (last visited Apr. 17, 2015).

(192) See Roderick, supra note 179.

(193) See REISNER, supra note 97, at 99-100 (describing the decline of Mulholland's reputation).

(194) See Hadley Meares, The Flood: St. Francis Dam Disaster, William Mulholland, and the Causalities of L.A. Imperialism, KCET, July 26, 2013, http://www.kcet.org/socal/departures/ columns/lost-landmarks/the-flood-st-francis-dam-disaster-william-mulholland-and-thecasualties-of-la-imperialism.html (Last visited Apr. 17, 2015).

(195) A former student of mine who grew up near the former dam site told me that she was baffled by the lack of local lore and remembrances about the disaster, noting that there was a small plaque somewhere in town mentioning what had happened, but nothing at the actual site of the disaster. See also Meares, supra note 194 ("We were passing the former site of the St. Francis Dam, but we couldn't tell where it had been, so effective had nature been in reclaiming its land.").

(196) See REISNER, supra note 97, at 100-01.

(197) U.S. Forest Serv., U.S. Dep't of Agric., Mono Basin National Forest Scenic Area, http://www.fs.usda.gov/detail/inyo/specialplaces/?cid=stelprdb5129903 (test visited Apr. 17, 2015).

(198) See JOHN HART, STORM OVER MONO: THE MONO LAKE BATTLE AND THE CALIFORNIA WATER FUTURE 5-7 (1996).

(199) See generally Mono Lake Comm., Quick Facts, http://www.monolake.org/about/stats [hereinafter Mono Lake Facts] (last visited Apr. 17, 2015) (listing attributes and statistics about Mono Lake); see HART, supra note 198, at 20-21 (describing the formation of tufa).

(200) Compare Mono Lake Facts, supra note 199 (noting Mono Lake's surface area is 45,133 acres, or 70.5 square miles), with U.S. Census Bureau, San Francisco County, California, http://quickfacts.census.gov/qfd/states/06/06075.html (last visited Apr. 17, 2015) (noting San Francisco County's land area is 46.87 square miles).

(201) Mono Lake Facts, supra note 199.

(202) See HART, supra note 198, at 8-10 (describing Mono Lake's geological history over millions of years); Tahoe Fund, Lake Tahoe Fast Facts, http://www.tahoefund.org/abouttahoe/recreational-paradise/ (last visited Apr. 17, 2015) ("Tahoe is considered an ancient lake and is counted among the 20 oldest lakes in the world.").

(203) See HART, supra note 198, at 14 (listing Mono Lake as three times saltier than the ocean); Univ. of Utah, Physical Characteristics of Great Salt Lake, http://leeun.genetics.utah.edu/content/gsl/physical_char/ (last visited Apr. 17, 2015) (describing the Great Salt Lake as 3.5 times saltier than the ocean).

(204) See HART, supra note 19798, at 16.

(205) Mono Lake, 658 P.2d 709, 711 (Cal. 1983); Mono Lake Comm., Brine Shrimp: Mono Lake's Unique Species, http://www.monolake.org/abou1/ecoshrimp [hereinafter Mono Lake Brine Shrimp] (last visited Apr. 17, 2015); Mono Lake Facts, supra note 199; Mono Lake Comm., Kutzadika'a People: Living in Harmony with the Mono Basin, http://www.monolake.org/about/kutzadikaa (last visited Apr. 17, 2015).

(206) MARK TWAIN, ROUGHING IT 243, 245 (Harriet Elinor Smith & Edgar Marquess Branch eds., 3d ed. 2011).

(207) Mono Lake, 658 P.2d at 711; Mono Lake Facts, supra note 199.

(208) Mono Lake Brine Shrimp, supra note 205.

(209) Id.

(210) Kevin Neal, TED Case Studies, The Los Angeles Aqueduct and the Owens and Mono Lakes (MONO Case), http://wwwl.cunerican.edu/ted/mono.htm (last visited Apr. 17, 2015) (explaining Mono Lake's importance to migratory bird routes from the Arctic Circle to South America); Mono Lake Comm., Birds of the Basin: The Migratory Millions of Mono, http://www.monolake.org/about/ecobirds [hereinafter Mono Lake Bird Facts] (last visited Apr. 17, 2015).

(211) Mono Lake Facts, supra note 199; Mono Lake Bird Facts, supra note 210.

(212) Mono Lake Facts, supra note 199.

(213) Id.; Mono Lake Bird Facts, supra note 210; see also HART, supra note 198, at 16-17.

(214) Renee Murdock, Mono Basin Volcanism, http://www.indiana.edu/~sierra/papers/2004/murdock.html (last visited Apr. 17, 2015).

(215) Mono Lake Comm., Volcanic History: Evidence of Recent Eruptions, http://www.monolake.org/about/geovolcanic (last visited Apr. 17, 2015); see also HART, supra note 198, at 13-14.

(216) Lucas Hatcher, The Geology and Biology of Mono Lake, http://www.indiana.edu/~sierra/papers/2013/hatcher.html (last visited Apr. 17, 2015).

(217) See, e.g., Mono Basin Clearinghouse, Current Mono Lake Research, http://www.monobasinresearch.org/research/index.php (last visited Apr. 17, 2015) (listing ongoing scientific studies in the Mono Basin).

(218) Nat'l Aeronautics and Space Admin., Discovery of "Arsenic-Bug" Expands Definition of Life, NASA SCIENCE NEWS, Dec. 2, 2010, http://science.nasa.gov/science-news/science-atnasa/2010/02dec_monolake/ (last visited Apr. 17, 2015).

(219) See id.

(220) Id.

(221) Richard A. Lovett, Arsenic-Life Discovery Debunked--But "Alien" Organism Still Odd, Nat'l Geographic News, July 9, 2012, http://news.nationalgeographic.com/news/2012/07/120709-arsenic-space-nasa-science-felisa-wolfe-simon/ (last visited Apr. 17, 2015).

(222) Mono Basin Clearinghouse, Mono Basin Creeks: Rush, Parker, Walker, Lee Vining, Mill, http://www.monobasinresearch.org/timelines/streams.php (last visited Apr. 17, 2015).

(223) HART, supra note 198, at 22-24 (describing the traditional lifestyle and culture of the Kutzadika'a).

(224) Id. at 24-25.

(225) See, e.g., Robert Reid, Top 10 US Travel Destinations for 2013, LONELY PLANET, Dec. 25, 2012, http://www.lonelyplanet.com/north-america/travel-tips-and-articles/77583 (last visited Apr. 17, 2015) (describing points of interest in the Eastern Sierra region of California); see also Mammoth Facts: Town of Mammoth Lakes Fact Sheet, http://www.visitmammoth.com/groupsmeetings/mammoth-facts/ (last visited Apr. 17, 2015) (noting the nearby town of Mammoth Lakes receives an average of 2.8 million visitors every year).

(226) See Lee Vining, California, http://www.city-data.com/city/Lee-Vining-Califomia.html (last visited Apr. 17, 2015).

(227) See U.S. Bureau of Land Mgmt. Map of Mono Basin, available at http://www.blm.gov/style/medialib/blxn/ca/pdVbakersfield/geology.Par.25066.File.dat/ovm07_geology_maps.pdf.

(228) Mono Lake, 658 P.2d 709, 719 (Cal. 1983); High Sierra Brine Shrimp Co., High Sierra Brine Shrimp, http://www.hsbrineshrimp.com/ (last visited Apr. 17, 2015) (advertising as "the world's only supplier of Mono Lake brine shrimp . .. products").

(229) HART, supra note 198, at 24-25 (describing the construction of Bodie).

(230) See Peter Fimrit.e, Mono Lake Efforts May Be Undone by Park Closures, SF Gate, July 24, 2011, http://www.sfgate.com/green/article/Mono-Lake-efforts-may-be-undone-by-park-closu res-2353453.php (last visited Apr. 17, 2015) (describing Lee Vining as a "community that relies on the 271,000 annual visitors who come to the area solely because of [Mono Lake]").

(231) See 16 U.S.C. [section] 543 (2012).

(232) U.S. GEN. ACCOUNTING OFFICE, NATIONAL FORESTS: SPECIAL RECREATION AREAS NOT MEETING ESTABLISHED OBJECTIVES 9 (1990), available at http://www.gao.gov/assets/150/148579.pdf.

(233) Cal. Dep't of Parks & Recreation, Mono Lake Tufa State Natural Reserve, http://www.parks.ca.gov/?page_id=514 (last visited Apr. 17, 2015).

(234) HART, supra note 198, at 7; see also Press Release, Eastern Sierra Land Trust, Permanent Protection of Mono Lake Scenic Vista Draws Applause (July 26, 2008), available at http://www.eslt.org/Pages/Newsroom2008.htm (describing the donation of a 480-acre conservation easement in Mono Basin).

(235) Mono Lake Comm., Things to Do: Spending Your Time in the Mono Basin, http://www.monolake.org/visit/activities (last visited Apr. 17, 2015).

(236) See HART, supra note 198, at 92 (discussing efforts to designate the Mono Basin as a National Monument); see also author communications with U.S. Forest Service supervisors (1996-1998).

(237) Author communications with U.S. Forest Service supervisors (1996-1998).

(238) Gary Libecap, Owens Valley Revisited: A Reassessment of the West's First Great Water Transfer 133 (2007).

(239) See Mono Lake, 658 P.2d 709, 711 (Cal. 1983) (explaining that the five freshwater streams had historically been Mono Lake's main source of water prior to being appropriated by the city's Department of Water and Power).

(240) See supra notes 79-86, 90-92 and accompanying text (discussing the law of prior appropriations).

(241) See HART, supra note 198, at 39-40 (describing how Los Angeles acquired land and water rights); see also City of Los Angeles v. Aitken, 52 P.2d 585 (1935) (litigating just compensation for the related condemnation of Mono Basin property).

(242) HART, supra note 198, at 38-39; see also Andrew H. Sawyer, Changing Landscape and Evolving Law: Lessons from Mono Lake on Takings and the Public Trust, 50 OKLA. L. REV. 311, 323-24 (1997) (describing methods of water rights acquisition by the Los Angeles Department of Water and Power).

(243) Los Angeles v. Aitken, 52 P.2d at 585 (consolidated condemnation proceedings for Mono Basin property); see a/soLlBECAP, supra note 238, at 133-34 (describing the Aitken litigation).

(244) See Brian E. Gray, The modern Era in California Water Law, 45 HASTINGS L.J. 249, 273-75 (1994).

(245) Id. at 274-75.

(246) See William R. Attwater & James Markle, Overview of California Water Rights and Water Quality Law, 19 Pac. L.J. 957, 972-73 (1988) (noting that the Water Commission Act required permits to establish new rights in previously unappropriated water).

(247) See id.

(248) See supra notes 79-86, 90-92 and accompanying text (discussing the law of prior appropriations).

(249) Id.

(250) See Mono Lake, 658 P.2d 709, 713-14 (Cal. 1983) (discussing the 1940 Water Board decision, which found that "it had to grant the application notwithstanding the harm to public trust uses of Mono Lake").

(251) Id. at 714.

(252) See id. at 713-14 (discussing the Water Board's findings that it was required to prioritize domestic use above all others).

(253) Cal. Const, art. X, [section] 2. ("[T]he general welfare requires that the water resources of the State be put to beneficial use to the fullest extent of which they are capable....").

(254) See Mono Lake, 658 P.2d at 713-14.

(255) Id. at 714.

(256) See HART, supra note 198, at 31; see also Koehler, supra note 94, at 560-61 (describing Los Angeles's potential for growth and success as a prime acquirer of land and water rights of the Mono Basin).

(257) Mono Lake, 658 P.2d at 714.

(258) Id. at 711.

(259) Id. (describing how Mono Lake receives water from its feeder streams, of which four out of five were appropriated by Los Angeles).

(260) Id. at 711, 713.

(261) See HART, supra note 198, at 34, 42, 137 (discussing the creation of Crowley Lake, also known as the "Long Valley reservoir").

(262) Id. at 43 (discussing the tunnel); Timothy Tierney, Geology of the Mono Basin 51 (2d ed. 2000) (noting the eleven deaths).

(263) HART, supra note 198, at 56.

(264) Id. at 56-57.

(265) Mono Lake, 658 P.2d 709, 714 (Cal. 1983).

(266) Decision 1631, supra note 8, at 86.

(267) Id. ("Annual Mono Basin exports increased to an average of 102,000 acre-feet per year through 1981...."); Mono Lake, 658 P.2d at 714; see also HART, supra note 198, at 76.

(268) See HART, supra note 198, at 49.

(269) See id ax 49, 51.

(270) Id. at 50-51.

(271) Id. at 58; Mono Lake, 658 P.2d at 714.

(272) See Mono Lake Facts, supra note 199 (listing the volume of Mono Lake at its highest and lowest levels).

(273) Decision 1631, supra note 8, at 5 ("The surface area of the lake declined from 54,924 acres in 1941 to approximately 37,688 acres in 1982."); see also Mono Lake, 658 P.2d at 716.

(274) See Andrew Ford, Mono Basin: Tufa, http://publlc.wsu.edu/~forda/tufal.html (last visited Apr. 17, 2015) (showing a photograph of Professor Ford kneeling at the tufa in 1995, with the shores of Mono Lake visible in the background of the photograph).

(275) See HART, supra note 198, at 69 (discussing shrimp reproductive issues).

(276) Id. at 70.

(277) Mono Lake, 658 P.2d at 716.

(278) Id

(279) See HART, supra note 198, at 72, 88 (describing attempts to breach the Negit land bridge in 1978 and 1979).

(280) Id. at 54-56 (describing effects on the feeder streams).

(281) See id. at 52-54 (describing the alkali band buildup and increase in toxic dust storms).

(282) See Maggie's Notebook, NASA's Creature at Bottom of Mono Lake: Remnants of Previous Earth Inhabitants?, http://www.maggiesnotebook.eom/2010/12/nasas-creature-atbottom-of-mono-lake-remnants-of-previous-earth-inhabitants/ (last visited Apr. 17, 2015).

(283) Blumm & Schwartz, supra note 3, at 704-05 (describing Mono Lake's unique level of salinity).

(284) HART, supra note 198, at 154-55.

(285) Id. at 61-63 (describing how scientists of various fields demonstrated concern for Mono Lake).

(286) MONO BASIN RESEARCH GRP., AN ECOLOGICAL STUDY OF MONO LAKE, CALIFORNIA (David W. Winkler ed., 1977), available at http://www.monobasinresearch.org/onlinereports/1976study/ecologicalstudyofmonolake.pdf.

(287) See Mono Lake Comm., History of the Mono Lake Committee, http://www.monolake.org/mlc/history Past visited Apr. 17, 2015) [hereinafter MLCHistory] ("[The] report drew attention to the potentially catastrophic ecological impacts of Mono Lake's falling level....").

(288) Mono Lake, 658 P.2d 709, 715 (Cal. 1983).

(289) See id. (noting that forecasters predicted the lake would stabilize at 6,330 feet, with a surface area of approximately 38 square miles).

(290) For the most thorough historical account of scientific, political, and legal advocacy at Mono Lake, see generally HART, supra note 198. For a discussion of the different advocates on the eve of litigation, see id. at 61-83. For a description of the legal research produced by Professor Harrison Dunning's pivotal public trust doctrine conference in 1980 at U.C. Davis, see id. at 101.

(291) See MLC History, supra note 287.

(292) Id.

(293) INTERAGENCY TASK FORCE ON MONO LAKE, REPORT OF INTERAGENCY TASK FORCE ON MONO LAKE 1-2 (1979); see also Wart, supra note 198, at 88 (describing the report of the Task Force).

(294) HART, supra note 198, at 84, 88-89. Earlier legislation inspired by the Owens Valley conflict imposed tighter controls on some out-of-basin water exports, but Los Angeles Aqueduct exports were not subject to these restrictions. See Libecap, supra note 238, at 16 (describing California's 1943 Area of Origin Law).

(295) Jane Kay, It's Rising and Healthy: Three Decades Ago, a Bunch of College Students Reported on and Worried About the Fate of Mono Lake. This Month, They Celebrated Its Recovery., SF Gate, July 29, 2006, http://www.sfgate.com/green/article/it-s-rising-and-healthythree-decades-ago-a-2515840.php (last visited Apr. 17, 2015).

(296) See MLC History, supra note 287 (discussing two lawsuits brought by the Mono Lake Committee and the National Audubon Society).

(297) See generally Sax, supra note 12.

(298) Id. at 473.

(299) Id. at 560.

(300) Id. at 556.

(301) See Mono Lake, 658 P.2d 709, 716 (Cal. 1983) ("[P]laintiffs filed suit for injunctive and declaratory relief in the Superior Court for Mono County on May 21, 1979.''). Mono Lake had been previously established as a navigable waterway in an earlier takings case, City of Los Angeles v. Aitken, 52 P.2d 585, 588 (Cal. 1935) ("There can be no doubt that Mono Lake is a navigable body of water.").

(302) Mono Lake, 658 P.2d at 716, 727.

(303) Decision 1631, supra note 8, at 7; see also MLC History, supra note 287 (describing the mission of the organization as "a non-profit citizens' group dedicated to protecting and restoring the Mono Basin ecosystem, educating the public about Mono Lake and the impacts on the environment of excessive water use, and promoting cooperative solutions that protect Mono Lake and meet ... real water needs without ... transferring environmental problems to other areas") (quotation marks omitted).

(304) Decision 1631, supra note 8, at 7, 19.

(305) For the argument that the federal government might also have challenged diversions on the basis of the riparian rights associated with its ownership of Mono Basin public lands, see Richard P. Shanahan, The Application of California Riparian Water Rights Doctrine to Federal Lands in the Mono Lake Basin, 34 Hasting L.J. 1293, 1296 (1983).

(306) Decision 1631, supra note 8, at 19-20.

(307) See Mono Lake, 658 P.2d at 709 ("Plaintiffs filed suit ... to enjoin DWP diversions....").

(308) HART, supra note 198, at 85, 88.

(309) Id. at 88 ("The state and federal governments would pay two-thirds of the cost of replacement water for the first two years....").

(310) Author email communication with Geoff McQuilken, Executive Director of the Mono Lake Committee, Apr. 26, 2015 (on file with author); see also HART, supra note 198, at 88-89, 168-70 (discussing the city's reluctance to engage in any activity that might undermine its appropriative rights); id. at 83 (describing a failed settlement conference among the parties in which the DWP representative pledged the city's resolve to protect its appropriative rights by warning the Mono Lake advocates that "The last lawsuit we had like this took forty-three years. ... Fortunately, we're young.").

(311) See supra Pent HB (discussing the law of prior appropriations).

(312) See HART, supra note 198, at 86, 88 (discussing the Mono Lake Committee's and Interagency Task Force's insistence on restoring the lake level to 6,388 feet, depending on how the lake level would be defined).

(313) See id. at 85 (discussing negotiations between the Mono Lake Committee, the Interagency Task Force, and the City of Los Angeles).

(314) See Decision 1631, supra note 8, at 154-55 (describing the long-term goal of returning the lake to a level that would protect the various public trust resources at issue).

(315) Personal communications with Geoffrey McQuilken, MLC Executive Director (July 1996 & May 2001); see also MLC History, supra note 287 (noting that early Mono Lake Committee leaders "also decided to ask for exactly what they wanted, instead of asking for more and then compromising down to the true goal").

(316) Because the litigation included federal agencies, the case was removed to federal district court, which abstained on the novel issue of state law and remanded back to state court. See Nat'l Audubon Soc'y v. Dep't of Water & Power of Los Angeles, 496 F. Supp. 499 (E.D. Cal. 1980); Mono Lake, 658 P.2d 709, 712 (Cal. 1983) (describing the federal district court's request "that the state courts determine the relationship between the public trust doctrine and the water rights system"); see also Mono Basin Clearinghouse, Political & Legal Chronology, http://www.monobasinresearch.org/timehnes/polchr.php (last visited Apr. 17, 2015) (describing history of the various lawsuits taking place at Mono Lake).

(317) See Mono Lake, 658 P.2d at 712 (describing plaintiffs' theory that "the shores, bed and waters of Mono Lake are protected by a public trust" and that diversions that fail to consider the public trust "may result in needless destruction of [public trust] values").

(318) See, e.g., State of California v. Superior Court (Fogerty), 29 Cal. 3d 240, 247 (Cal. 1981) (applying the public trust doctrine to "ah the navigable lakes and rivers in California"); State of California v. Superior Court (Lyon), 29 Cal. 3d 210, 227 (Cal. 1981) (same); City of Berkeley v. Superior Court, 606 P.2d 362, 364 (1980) (characterizing the public trust right as "illimitable and unrestrainable and incapable of individual exclusive appropriation") (internal quotation marks omitted); Marks, 491 P.2d 374 (1971) (recognizing the public trust doctrine as a matter "of great public importance").

(319) See Mono Lake, 658 P.2d at 728-29 (noting that the rights had been acquired "in 1940 from a water board which believed it lacked both the power and the duty to protect the Mono Lake environment" and that DWP "continues to exercise those rights in apparent disregard for the resulting damage to ... Mono Lake").

(320) Id.

(321) Id. at 714 (citing the Water Board's 1940 decision, which found: "It is indeed unfortunate that the City's proposed development will result in decreasing the aesthetic advantages of Mono Basin but there is apparently nothing that this office can do to prevent it") (emphasis in opinion); see also Decision 1631, supra note 8, at 1 (noting the Water Board's conclusion that the Water Code "required issuance of the permits despite anticipated damage to Mono Lake and other natural resources").

(322) See Mono Lake, 658 P.2d at 712-14 (noting plaintiffs' public trust violation cause of action and the DWP's determination not to consider the public trust in its 1940 decision).

(323) Id. at 712 (summarizing the state's public trust duty and synthesizing the doctrine with the prior appropriations doctrine).

(324) See id. at 721 (discussing Illinois Central and applying its rule of law); see also supra Part H.A.1 (discussing Illinois Central).

(325) See Mono Lake, 658 P.2d at 718 (discussing defendant's attempt to require plaintiffs to exhaust administrative remedies before the Water Board for claims "based on asserted unreasonable or nonbeneficial use of appropriated water").

(326) Id. at 727 (noting defendant's argument that the public trust had been subsumed into the prior appropriation system, giving it "a vested right in perpetuity to take water without concern for the consequences to the trust"); see also supra Part II.B (reviewing principles of water law).

(327) Cal. CONST, art. X, [section] 2. ("[I]n this State the general welfare requires that the water resources of the State be put to beneficial use to the fullest extent of which they are capable, and that the waste or unreasonable use or unreasonable method of use of water be prevented, and that the conservation of such waters is to be exercised with a view to the reasonable and beneficial use thereof in the interest of the people and for the public welfare.").

(328) See Mono Lake, 658 P.2d at 727-28 (discussing California's historical reliance on water diversions out of stream).

(329) Id. at 727 (discussing the Water Board's power to "grant usufructuary licenses that will permit an appropriator to take water from flowing streams and use that water in a distant part of the state").

(330) Id.

(331) See, e.g., William Lindsley, Effects of Statutes on Common Law, in 58 CAL. JUR. 3d Statutes [section] 5 ("The legislature is at liberty to change any rule of the common law and thereby prevent it from being the rule of decision in this state."); modern Barber Colleges v. Cal. Emp't State Comm'n, 192 P.2d 916, 920 (Cal. 1948) (noting that the legislature may "create new rights or provide that rights which have previously existed shall no longer arise, and it has full power to regulate and circumscribe the methods and means of enjoying those rights").

(332) See Lowman v. Stafford, 226 Cal. App. 2d 31, 38-39 (1964) ("[T]he law itself, as a rule of conduct, may be changed at will by the Legislature subject only to constitutional provision.") (internal citations omitted).

(333) Mono Lake, 658 P.2d at 718.

(334) Id. at 713-14, 718.

(335) Id. at 712, 727.

(336) Id. at 727.

(337) Id.

(338) Id. at 712.

(339) Id.

(340) Id.

(341) Id.

(342) Id.

(343) Id. at 728-29.

(344) Id. at 726.

(345) id. at 712, 727.

(346) Id. at 727.

(347) Id. at 728-29.

(348) Id. at 729.

(349) Id. at 728-29.

(350) Id. at 730-32.

(351) Although the California Supreme Court's interpretation is limited to California law, it is noteworthy that the Pennsylvania Supreme Court reached a similar conclusion in the Robinson Township decision. Robinson Twp. v. Commonwealth, 83 A.3d 901, 913 (Pa. 2013). For further discussion of the case, see supra Part H.A.2.

(352) Mono Lake, 658 P.2d 709, 712 (Cal. 1983) (conceiving of California water law as "an integration including both the public trust doctrine and the board-administered appropriative rights system"); see supra Part IV.A.3 (discussing this holding).

(353) See, e.g., Blumm, supra note 15, at 591 (characterizing Mono Lake as among the best known of the new generation of public trust decisions); Frank, supra note 23, at 670 (referring to the case as "perhaps the nation's most important public trust decision in nearly a century"); Conway, supra note 92, at 631.

(354) Marks, 491 P.2d 374, 380 (Cal. 1971) (expanding public trust protections to ecological, habitat, open space, climatic, and scenic values).

(355) Id.

(356) Id. (expanding public trust protections to ecological, habitat, open space, climatic, and scenic values).

(357) Id. at 377.

(358) The public trust analysis in the Mono Lake case is complemented by several important but unpublished cases that helped lay political foundation for the role of the doctrine in California water law, involving the American River and Putah Creek. See, e.g., Stuart L. Somach, The American River Decision: Balancing Instream Protection with Other Competing Beneficial Uses, 1 RIVERS 251, 258-60 (1990) (discussing use of the doctrine in an unpublished Alameda County Court decision that led the state agency to relocate its exercise of rights from the Folsom South Canal upstream of Sacramento to Freeport downstream in order to preserve instream flow through the intervening channel); Joseph Sax, Bringing an Ecological Perspective to Natural Resources Law: Fulfilling the Promise of the Public Trust, in NATURAL RESOURCES POLICY AND LAW: TRENDS AND DIRECTIONS 152-60 (Lawrence J. MacDonnell & Sarah F. Bates, eds. 1993) (discussing the same Alameda County case).

(359) Mono Lake, 658 P.2d 709, 720-21 (Cal. 1983).

(360) Id. at 711.

(361) Id. at 720-21.

(362) This argument has particular resonance right now, as another public trust drama unfolds in northern California around the extension of public trust obligations to protect the groundwater tributaries of the Scott River (discussed further in Part IV.C). See Order After Hearing on Cross Motions for Judgment on the Pleadings at 3, Envtl. Law Found, v. State Water Res. Control Bd., Case No.: 34-2010-80000583 (Cal. Sacramento County Ct. 2014) [hereinafter Scott River Case].

(363) See id. at 3-4. For further discussion of the Scott River Case, see infra Part IV.C.2.

(364) Mono Lake, 658 P.2d at 728.

(365) Id.

(366) See generally Reisner, supra note 97, at 12 (noting that water from Colorado River canyons is moved to meet demand in Phoenix and Palm Springs).

(367) See id.

(368) See LIBECAP, supra note 238, at 151-53 (critiquing the Mono Lake decision's impact on prior appropriations systems by creating uncertainty, undermining property rights, and compromising economic efficiency); Barton H. Thompson, Jr., Judicial Takings, 76 VA. L. REV. 1449, 1533 (1990) (noting how Mono Lake "surprised many people and was certainly a deviation from most water lawyers' expectations").

(369) Waiahole Ditch, 9 P.3d 409, 445 (Haw. 2000) (holding that the state water code "does not supplant the protections of the public trust doctrine").

(370) See supra notes 54-56 and accompanying text (discussing Hawaiian water law).

(371) Mineral Cnty. v. State Dep't of Conservation & Natural Res., 20 P.3d 800, 807 (Nev. 2001) (Rose, J., concurring) (arguing that the Court should affirm the existence and role of Nevada's public trust doctrine); see also Lawrence v. Clark Cnty., 254 P.3d 606, 617 (Nev. 2011) (adopting the public trust doctrine expressly but in a case that did not address water rights).

(372) See, e.g., Kootenai Envtl. Alliance v. Panhandle Yacht Club, 671 P.2d 1085, 1094, 1096 (Idaho 1983) (adopting the "California rule" but finding that the land grant at issue did not violate it).

(373) IDAHO Code tit. 58, ch. 12 [section] 58-1201 (1996). For further discussion, see generally Blumm et al., supra note 65 (discussing Idaho's attempt to legislate away the public trust doctrine).

(374) See generally David Owen, The Mono Lake Case, the PubUc Trust Doctrine, and the Administrative State, 45 U.C. DAVIS L. REV. 1099 (2012) (noting that, despite this potential, the doctrine has not upended many established water rights). Depending on the final outcome of the Scott River litigation, however, the doctrine may yet be extended to previously asserted groundwater rights. See generally Scott River Case, supra note 362.

(375) Owen, supra note 374, at 1122-23.

(376) Id. at 1135-36.

(377) 207 Cal. App. 3d 585, 592 (1989).

(378) Id. at 592 (commanding the Water Board to reconsider Mono Basin diversion licenses in light of the California Department of Fish and Game code requirements).

(379) Id. at 632-33.

(380) See generally Decision 1631, supra note 8.

(381) Id. at 2.

(382) California State Water Resources Board, Final Environmental Impact Report for the Review of Mono Basin Water Rights and the City of Los Angeles (1994), available at http://www.monobasinresearch.org/onlinereports/feirl.php.

(383) Decision 1631, supra note 8, at 154-55,158.

(384) Id.

(385) Id. at 3.

(386) Id. at 2 (requiring Los Angeles to prepare stream restoration plans). See generally Koehler, supra note 94 (reviewing the historical buildup to Mono Lake and critiquing the positive and negative aspects of the Water Board's resulting Decision 1631).

(387) Decision 1631, supra note 8, at 155.

(388) Id. at 77-78, 82.

(389) Id. at 82.

(390) Id. at 3.

(391) Id.

(392) Id. "Relicted lands" refers to the formerly submerged lakebed that has been exposed by water diversions. Id.

(393) See Mono Lake Conun., Mono Lake Level and Tributary Stream Flows, http://www.monolake.org/today/water [hereinafter Mono Lake Level(last visited Apr. 17, 2015) (listing historic lake levels from 1919 until present).

(394) See, e.g., Mono Basin Clearinghouse, Monthly Weather Summaries for Lee Vining, CA, http://www.monobasinresearch.org/data/weather.php (last visited Apr. 17, 2015) (noting average temperatures in Lee Vining and providing precipitation data).

(395) Kyle Kim & Thomas Suh Lauder, 163 Drought Maps Reveal Just How Thirsty California Has Become, L.A. Times, Feb. 27, 2015, http://www.latimes.com/science/la-me-g-califomiadrought-map-htmlstory.html (last visited Apr. 17, 2015) (showing the severity of the California drought with map infographic).

(396) See Mono Lake Level, supra note 393 (providing recent sub-6,392 foot water levels). In fact, with the lake level below 6,380 feet as of April 1, 2015, Los Angeles will be required to dramatically curtail exports again. Geoff McQuilken, Executive Director of the Mono Lake Committee, April 1 Lake Level Means Reduced Water Exports to LA, More Protection for Mono Lake, MONOLOGUE, April 1, 2015, http://www.monolake.org/today/2015/04/01/april-l-lake -level-means-reduced-water-exports-to-la-more-protection-for-mono-lake/ (last visited Apr. 17, 2015) (noting that the lake has declined to a level at which water exports to Los Angeles are automatically reduced by 70% to 4,500 acre-feet of export annually).

(397) See Mono Lake Level, supra note 393.

(398) See HART, supra note 198, at 88-89 (discussing DWP's refusal to adopt the Interagency Task Force plan that offered state and federal money to cover the majority of the cost of replacement water for the first two years after adoption).

(399) See id. at 168-70.

(400) David Cobb, National Director of Civic Affairs, HDR Inc., Address at the Berkeley Mono Lake Symposium (Nov. 17, 2014), available at http://www.waterboards.ca.gov/board_info/media/nov2014/mono_lake_l 11714_l.shtml.

(401) Id.

(402) HART, supra note 198, at 148-49.

(403) Id. at 182.

(404) Id. at 149.

(405) Compare id. at 76 (noting that Mono Lake provided 12% of Los Angeles's water supply), with Mono Lake Comm., Mono Lake FAQ: Frequently Asked Questions About Mono Lake, http://www.monolake.org/about/faq (last visited Apr. 17, 2015) (noting that Los Angeles conservation efforts have more than replaced water no longer diverted from Mono Lake).

(406) See Jacques Leslie, Los Angeles, City of Water, N.Y. TIMES, Dec. 6, 2014, http://nyti ,ms/lu550yO (last visited Apr. 17, 2015) (noting that Los Angeles has become "a leader in sustainable water management, a pioneer in big-city use of cost-effective, environmentally beneficial water conservation, collection and reuse technologies").

(407) See Mono Lake Comm., Replacement Water: Helping Los Angeles Find Better Solutions, http://www.monolake.org/mlc/altwater (last visited Apr. 17, 2015) ("[D]espite growth of a million people between 1975 and 2005, LA's water usage (of about 600,000 AF/yr) had not changed.").

(408) See, e.g., Blumm, supra note 15, at 579 (characterizing the public trust doctrine as "chameleon-like" in its ability to shape itself to different contexts); Stevens, supra note 64, at 621 (concluding that the public trust and prior appropriations doctrines were intertwined long before Mono Lake and other cases, and arguing that the public trust is an inalienable attribute of sovereignty); Kevin M. Raymond, Protecting the People's Waters: The California Supreme Court Recognizes Two Remedies to Safeguard Public Trust Interests in Water--National Audubon Society v. Superior Court, 33 Cal. 3d 419, 658P.2d 709,189 Cal. Rptr. 346, cert, denied, 104 S. Ct. 413 (1983), 59 WASH. L. REV. 357, 357-58 (1984) (examining the administrative and judicial remedies available for public trust violations in California after the case); Gray, supra note 93, at 975, 979, 997 (describing the author's work with the San Francisco City Attorney's office on an amicus brief for the plaintiffs, and arguing that one especially significant aspect of the case is the court's recognition of an environmental baseline in the management of public resources); see also Arnold, supra note 3, at 2 (celebrating Mono Lake as an environmental achievement); Enzler, supra note 3, at 456-501 (reviewing the significance of Mono Lake for public trust and environmental law at the systemic level).

(409) See infra notes 445-451 and accompanying text (discussing attempts to extend public trust protection to other realms).

(410) M.C. Mehta v. Kamal Nath, (1997) 1 S.C.C. 388 (1996) (India), in I UNITED NATIONS ENVIRONMENT PROJECT COMPENDIUM OF JUDICIAL DECISIONS IN MATTERS RELATED TO THE ENVIRONMENT, NATIONAL DECISIONS 259 (1998), available at http://www.asiaryudges.org/wpcontent/uploads/2013/10/Compendium_Judicial_Decisions_Nat_vl.pdf (discussing the role of the public trust doctrine in Indian law and quoting the California Supreme Court's description of the doctrine in Mono Lake).

(411) See infra notes 370-400 and accompanying text (discussing various critiques of the public trust doctrine).

(412) See, e.g., James L. Huffman, A Fish out of Water: The Public Trust Doctrine in a Constitutional Democracy, 19 ENVTL. L. 527,533 (1989) (identifying the doctrine as a creature of property law that has been distorted by the courts beyond its proper boundaries); Barton H. Thompson, Jr., The Public Trust Doctrine: A Conservative Reconstruction and Defense, 15 SOUTHEASTERN ENVTL. L. J. 47,49 (2006) (suggesting reconstruction of the public trust doctrine in response to libertarian and property rights critiques); Cohen, supra note 41, at 274-76 (criticizing the public trust doctrine's effects on private property rights); see also Rose, supra note 16, at 711-13, 774, 777-81 (recognizing the inevitable conflict between the public trust and private property rights and considering what type of property can, under competing notions of public trust, be considered inherently public). But see Epstein, supra note 41, at 428-30 (1987) (analyzing the public trust from a similarly libertarian, property rights perspective, but supporting it as a natural limitation on government power, comparable to restrictions on eminent domain).

(413) See, e.g., Mono Lake, 658 P.2d 709, 712 (Cal. 1983) (discussing public and private rights over water).

(414) See, e.g., Palazzolo v. Rhode Island, 533 U.S. 606, 611 (2001) (resolving takings claim related to waterfront development, in part, on public trust grounds); see also Ryan, supra note 42, at 123-25 (discussing South Carolina's Marsh Island Bridge debate involving waterfront land and water development programs).

(415) See, e.g., Marks, 491 P.2d 374, 383 (Cal. 1971) (discussing regulation of private activity on submerged lands).

(416) See e.g., Matthews v. Bay Head Improvement Ass'n, 471 A.2d 355, 355-56 (N.J. 1984) (discussing private and public activity on beachfront property); Glass v. Goeckel, 703 N.W.2d 58 (Mich. 2005) (discussing private and public rights on lakefront property).

(417) Matthews v. Bay Head Improvement Ass'n (Matthews), 471 A.2d 355 (N.J. 1984).

(418) Matthews, 471 A.2d at 363 ("In order to exercise these rights guaranteed by the public trust doctrine, the public must have access to municipally-owned dry sand areas as well as the foreshore. The extension of the public trust doctrine to include municipally-owned dry sand areas was necessitated by our conclusion that enjoyment of rights in the foreshore is inseparable from use of dry sand beaches.").

(419) Id. at 365.

(420) See, e.g., id.-, Mono Lake, 658 P.2d 709, 719 (Cal. 1983).

(421) See Thompson, supra note 412, at 48-49 (discussing concerns among conservatives about judicial interpretations of the public trust doctrine); Thompson, supra note 368, at 1478 (discussing concerns among property owners about possible takings under the public trust doctrine).

(422) Thompson, supra note 368, at 1507-08, 1520, 1532-33. But see Michael C. Blumm, The Public Trust Doctrine and Private Property: The Accommodation Principle, 27 PACE ENVTL. L. REV. 649, 654 (2010) (arguing that there is no inherent conflict between private property and the public trust doctrine). See also Thompson, supra note 412, at 48-49; Thompson, supra note 368, at 1478.

(423) See, e.g., Thompson, supra note 368, at 1478 (discussing the belief that property is determined politically with no objective principle); Kearney & Merrill, supra note 30, at 929-30 (arguing for limited application, and worrying about unclear boundaries). But see Epstein, supra note 41, at 428-29 (arguing that the sweep of the doctrine, as he construes it, "should be broad indeed").

(424) Cf. JOSEPH WILLIAM SINGER, PROPERTY LAW: RULES, POLICIES, AND PRACTICES 62-63, 65 (2010) (discussing how far the public trust doctrine will go and querying whether it might require the public to give up public use rights as an incident to public enjoyment of trust resources).

(425) See supra notes 371-374 and accompanying text (discussing the limited impact of the duty of ongoing oversight).

(426) Cohen, supra note 41, at 276. Professor Gary Libecap has critiqued the rule for impeding economically efficient interbasin transfers and frustrating the development of water markets. See LIBECAP, supra note 238, at 151-53.

(427) See, e.g., Richard J. Lazarus, Changing Conceptions of Property and Sovereignty in Natural Resources: Questioning the Public Trust Doctrine, 71 IOWA L. REV. 631, 715-16 (1986); William D. Araiza, Democracy, Distrust, and the Public Trust: Process-Based Constitutional Theory, the Public Trust Doctrine, and the Search for a Substantive Environmental Value, 45 UCLA L. REV. 385, 387-88 (1997).

(428) See, e.g., Lazarus, supra note 427, at 715-16 (discussing public trust and shifts in notions of private property).

(429) See, e.g., Araiza, supra note 427, at 432 (criticizing the doctrine's reliance on process over a substantive commitment to environmental protection). Bui see Arnold, supra note 3, at 39, 41 (using Mono Lake to suggest that politics and public participation are as critical to environmental protection as formal environmental law).

(430) See Ryan, supra note 1, at 493 (discussing the "green dissent" by environmentalists objecting to use of the doctrine for environmental protection in lieu of conventional environmental statutory and administrative law.).

(431) See Lazarus, supra note 427, at 681 n.308, 684.

(432) Id. at 715-16. But see Albert C. Lin, Public Trust and Public Nuisance: Common Law Peas in a Pod?, 45 U.C. DAVIS L. REV. 1075, 1097 (2012) (distinguishing the public trust doctrine and common law nuisance as elements of property and tort law respectively, and answering Lazarus's arguments that the public trust should be superseded by nuisance law with his conclusion that the two fill distinct roles).

(433) Araiza, supra note 427, at 452; see also William D. Araiza, The Public Trust Doctrine as an Interpretive Canon, 45 U.C. Davis L. Rev. 693,697 (2012) (suggesting the public trust doctrine be interpreted as a canon of construction, establishing a background principle against which legislation and administrative actions are construed, rather than as an independent legal principle).

(434) Mono Lake, 658 P.2d 709, 712, 727 (Cal. 1983).

(435) See, e.g., Thompson, supra note 412, at 48-49.

(436) See, e.g., Blrnnm, supra note 353, at 580 (arguing that the public trust doctrine compensates for defects in the democratic process).

(437) See, e.g., Araiza, supra note 427, at 432 (criticizing the process-justified public trust doctrine as a violation of the democratic political process); Thompson, supra note 368, at 1507-08, 1532-33.

(438) See, e.g., Huffman, supra note 412, at 533; see also Cohen, supra note 41, at 271-72.

(439) See Huffman, supra note 412, at 533.

(440) See, e.g., Ryan, supra note 42, at 130-31 (2006) (discussing concerns by coastal landowners that the administration of public trust principles would frustrate their expectations).

(441) See Thompson, supra note 412, at 48-49.

(442) See generally Smith, supra note 90 (defending Mono Lake against critiques during its immediate aftermath).

(443) See, e.g., Mono Lake, 658 P.2d 709, 721 (Cal. 1983) (emphasizing that appropriative rights are nonvested, and subject to the state's continuing oversight).

(444) Thompson et al., supra note 87, at 685-87 (noting that the Mono Lake duty of ongoing oversight generated concern among water planners but never amounted to many changes in allocations).

(445) See, e.g., Rose, supra note 16, at 711 (recognizing the inevitable conflict between the public trust and private property rights and considering what type of property can be considered inherently public); Blumm, supra note 353, at 579 (characterizing the public trust doctrine as "chameleon-like" in its ability to shape itself to different contexts); Frank, supra note 23, at 671-73 (analyzing the past and future of the public trust and the various resources subject to the trust); Allison Rieser, Ecological Preservation as a Public Property Right: An Emerging Doctrine in Search of a Theory, 15 HARV. ENVTL. L. REV. 393 (1991) (discussing the significance of the Mono Lake case in recognizing the preservation of ecological function as a trust value and proposing additional theoretical support for the move).

(446) See, e.g., Ralph W. Johnson, Water Pollution and the Public Trust Doctrine, 19 Envtl. L. 485, 486-88 (1989) (suggesting innovative application of the trust to nonpoint pollution sources left largely unregulated by the Clean Water Act); Danielle Spiegel, Can the Public Trust Doctrine Save Western Groundwater?, 18 N.Y.U. ENVTL. L.J. 412, 414 (2010) (analyzing the public trust's extension to groundwater and concluding that western states where depletion is most problematic are least likely to do so); Carol Necole Brown, Drinking from a Deep Weil: The Public Trust Doctrine and Western Water Law, 34 Fla. St. U. L. Rev. 1, 2 (2006) (advocating for expansion of public trust doctrine to preempt prior appropriations in western states where water scarcity issues loom); Joseph L. Sax, The Constitution, Property Rights and the Future of Water Law, 61 U. COLO. L. REV. 257, 257-59 (1990) (discussing the future of water law and the takings law ramifications of government-mandated restoration of instream flows from appropriations right-holders); Sam Brandao, Louisiana's Mono Lake: The Public Trust Doctrine and Oil Company Liability for Louisiana's Vanishing Wetlands, 86 Tul. L. Rev. 759, 761-62 (2012) (comparing Louisiana's public trust doctrine to that of California following Mono Lake, and arguing for its expansion to better protect Louisiana's coastal wetlands).

(447) See, e.g., Michael C. Blumm & Aurora Paulsen, The Public Trust in Wildlife, 2013 UTAH L. REV. 1437, 1440-41 (2013) (arguing that the public trust should be integrated into state wildlife protection law); Alexandra B. Klass, Renewable Energy and the Public Trust Doctrine, 45 U.C. Davis L. Rev. 1021, 1026 (2012) (considering use of the doctrine within the field of renewable energy law); Robin Kundis Craig, Adapting to Climate Change: The Potential Role of State Common-Law Public Trust Doctrines, 34 VT. L. REV. 781, 781 (2010) (arguing that the doctrine could provide "legal support for adaptive management-based climate change adaptation regimes"); David D. Caron, Time and the Public Trust Doctrine: Law's Knowledge of Climate Change, 35 U. HAW. L. REV. 441, 442-43 (2013) (advocating that the doctrine be used to prevent sea level rise in the context of climate change); see also Irma S. Russell, A Common Tragedy: The Breach of Promises to Benefit the Public Commons and the Enforceability Problem, 11 TEX. WESLEYAN L. REV. 557, 558, 560-61 (2005) (suggesting contract law as a solution to the difficulty of enforcing legislation designed to protect public commons).

(448) See supra notes 57-58 and accompanying text (discussing the Pennsylvania Environmental Rights Amendment); John C. Dernbach, The Potential Meanings of a Constitutional Public Trust, 45 ENVTL. L. 257, 469-73 (2015); See also CTR. FOR PROGRESSIVE REFORM, supra note 50 Gisting state-by-state public trust surveys by Craig, Hass, and Blumm); Araiza, supra note 427, at 394-95 (noting that many state constitutions have developed a conception of the public trust that is based on a more substantive commitment to preservation than most common law analogues); Silvyn, supra note 62, 356-57, 373 (comparing California's common law and constitutional public trust rights and concluding that the latter is more expansive).

(449) See, e.g., Ronald B. Robie, Effective Implementation of the Public Trust Doctrine in California Water Resources Decision-Making: A View Rom the Bench, 45 U.C. DAVIS L. REV. 1155, 1157 (2012) (reflecting on the impact of the case 30 years later and concluding that protection of the public trust should primarily rest with administrative actors); Dave Owen, The Mono Lake Case, the Public Trust Doctrine, and the Administrative State, 45 U.C. DAVIS L. REV. 1099, 1104-05 (2012) (considering the administrative ramifications of the case and its impacts on the California water board); Gregory S. Weber, Articulating the Public Trust: Text, Near-Text and Context, 27 Ariz. St. L.J. 1155, 1159 (1995) (examining the judicial, legislative, and administrative development of the public trust doctrine in California after the case).

(450) See Ryan, supra note 42, at 123 (analyzing how the public trust doctrine operates as a background principle of law that can constrain the reasonable expectations of a property owner alleging a taking); J. Peter Byrne, The Public Trust Doctrine, Legislation, and Green Property: A Future Convergence?, 45 U.C. DAVIS L. REV. 915, 916 (2012) (suggesting that the doctrine be used as a defense to innovative regulatory takings claims and to "sustain environmental legislation against judicial hostility"); John D. Echeverria, The Public Trust Doctrine as a Background Principles Defense in Takings Litigation, 45 U.C. Davis L. Rev. 931, 931-34 (2012) (analyzing use of the doctrine as a takings defense in light of two California cases that did not allow it). But see Thompson, supra note 368, at 1532-33 (criticizing use of the doctrine to avoid just compensation for what otherwise looks like a taking).

(451) See, e.g., Palazzolo v. State, No. WM 88-0297, 2005 WL 1645974, at *7 (R.I. Super. Ct. July 5, 2005) (relying on the public trust doctrine in part to conclude in an unpublished opinion that there had been no taking of privately owned wetlands by a state wetlands regulation); see also Orion Corp. v. State, 747 P.2d 1062, 1072-73 (Wash. 1987) (determining that the public trust doctrine foreclosed a regulatory takings claim because the public trust doctrine already applied to private property owner's tidelands prior to the adoption of a regulation prohibiting dredging and filling; remanded on factual question of whether private property owner uses land for any uses consistent with public trust doctrine, which could present a takings claim).

(452) See Robinson Township, 83 A.3d 901, 913, 980 (Pa. 2013) (holding unconstitutional parts of Pennsylvania's Oil and Gas Act prohibiting local government water and air quality protections, on the basis of article I section 27 of Pennsylvania's Constitution, which provides for the public trust doctrine).

(453) Dernbach, supra note 48; see also supra notes 57-58 and accompanying text (discussing the Pennsylvania Environmental Rights Amendment).

(454) See Colorado Oil & Gas Ass'n v. City of Longmont, No. 2013CV63, at 17 (Colo. Dist. Ct. July 24, 2014) (order granting summary judgment); see also Colorado Oil & Gas Ass'n v. City of Fort Collins, No. 2013CV031385, at 7, 9 (Colo. Dist. Ct. Aug. 7, 2014) (order granting summary judgment).

(455) Compare Ling-Yee Huang, Restoring the Trust: An Index of State Constitutional and Statutory Provisions on Water Resources and the Public Trust Doctrine 2, 7 nn.37-41 (Ctr. for Progressive Reform White Paper No. 908-B, 2009), available at http://papers.ssm.com/sol3/papers.cfm?abstract_id=1478512 (noting that Colorado's public trust doctrine is limited to issues pertaining to "waters of every natural stream"), with Robinson Township, 83 A.3d at 913 (recognizing that Pennsylvania's public trust doctrine applies more broadly to natural resources affected by oil and gas).

(456) See Ellen M. Gilmer, Enviros Push 'Public Trust' as Trump Card over Oil and Gas Influence, E&E ENERGYWIRE, August 15, 2014, http://www.eenews.net/stories/1060004530 Past visited Apr. 17, 2015) (noting that in Michigan, environmental attorneys assert that "even if the doctrine is limited to navigable water issues ... it places a duty on government to consider how fracking and horizontal drilling could affect the water").

(457) See supra notes 359-363 and accompanying text (describing Mono Lake's extension of the public trust doctrine to non-navigable tributaries).

(458) Scott River Case, supra note 362, at 2.

(459) Marcus Griswold, Scott River Decision Gives Californians One More Tool to Keep Water in Streams, NATURAL RES. DEF. COUNCIL (Aug. 25, 2014), http://switchboard.nrdc.org/blogs/mgriswold/scott_river_decision_gives_cal.html.

(460) Scott River Case, supra note 362, at 3.

(461) See id. at 2 (characterizing application of public trust doctrine to groundwater as an "issue of first impression"); see also Frank, supra note 23, at 675-76 (discussing application of public trust doctrine to groundwater in Hawaii, Vermont, and California).

(462) See Scott River Case, supra note 362, at 10.

(463) See, e.g., Betchart v. Dep't of Fish & Game, 158 Cal.App.3d 1104, 1106 (1984) (holding that "California wildlife is publicly owned and is not held by owners of private land where wildlife is present"); Owsichek v. State Guide Licensing & Control Bd., 763 P.2d 488, 495 (Alaska 1988) ("[C]ommon law principles incorporated in the common use clause impose upon the state a trust duty to manage the fish, wildlife and water resources of the state for the benefit of all the people. We have twice recognized this duty in our prior decisions." (footnote omitted)); see also Blumm & Paulsen, supra note 447, at 1440 (discussing application of the public trust to protect wildlife).

(464) Ryan, supra note 1, at 490 (listing failed efforts to expand the doctrine).

(465) See supra notes 12-16 and accompanying text (discussing the philosophical underpinnings of the doctrine).

(466) See supra note 13 and accompanying text.

(467) See Craig, supra note 447, at 781.

(468) See David D. Caron, supra note 447, at 455-56.

(469) See Jeff Thaler & Patrick William Lyons, The Seas Are Changing: It's Time to Use OceanBased Renewable Energy, the Public Trust Doctrine and a Green Thumb to Protect Seas from Our Changing Climate, 19 Ocean & Coastal L.J. 241, 276 (2014).

(470) See NATURE'S TRUST, supra note 65; Mary Christina Wood, Atmospheric Trust Litigation, in CLIMATE CHANGE: A READER 1018, 1021 (W.H. Rodgers, Jr. et al., eds.) (2011); Wood, Part I, supra note 65, at 80-81 (2013) (criticizing the failure of modern environmental law to protect natural resources and proposing broader state responsibilities as trustee, especially to combat greenhouse gas pollution); Wood, Part n, supra note 65, at 91, 93-98, 139 (discussing the pragmatic duties of governmental trustees, the interaction between the public trust and statutory law, and the ramifications of the trust for property rights in an effort to "reframe what is currently government's discretion to destroy our atmosphere and other resources into an obligation to defend those resources") (emphases in original); Mary Christina Wood, Tribal Trustees in Climate Crisis, 2 AM. INDIAN L.J. 518, 518-19 (2014) (considering the federal trust obligation as the legal cornerstone of Indian law and suggesting how tribes can use their status as co-trustees with the federal government to combat climate change).

(471) Wood, Part II, supra note 65, at 93-98; see also Blumm & Schaffer, supra note 63.

(472) Wood, Part II, supra note 65, at 97-98.

(473) See James Conca, Atmospheric Trust Litigation--Can We Sue Ourselves over Climate Change? Forbes, http://www.forbes.com/sites/jamesconca/2014/ll/23/atmospheric-trust-litigation-can-we-sue-ourselves -over-climate-change/ (last visited Apr. 17, 2015).

(474) Id.

(475) Sam Bliss, These Teens Are Taking Their Climate Lawsuit All the Way to the Supreme Court, Grist, http://grist.org/climate-energy/these-teens-are-taking-their-climate-lawsuit-all-theway-to-the-supreme-court/ (last visited Apr. 17, 2015).

(476) Id.

(477) See supra notes 12-22 and accompanying text (discussing the jus publicum).

(478) See supra notes 408-444 and accompanying text (discussing critiques of the public trust doctrine).

(479) Wood, Part II, supra note 65, at 97-98.

(480) See Jeremy Waldron, Representative Lawmaking; 89 B. U. L. REV. 335, 335-37 (2009).

(481) See Professor Amicus Brief, supra note 27.

(482) Opponents would doubtlessly argue that even Congress lacks the needed capacity, because greenhouse gases mix evenly in the atmosphere at the international level--but unlike the states, at least the federal government can participate in treaty-making and other international efforts to resolve the problem.

(483) See, e.g., Kirsten H. Engel, Whither Subnational Climate Change Initiatives in the Wake of Federal Climate Legislation?, 39 PUBLIUS 432, 437-39 (2009) (providing an overview of multiple climate change initiatives advanced by the states; see also ERIN RYAN, FEDERALISM AND THE TUG OF WAR WITHIN 145, 169-73 (2011).

(484) See, e.g., Ryan, supra note 42, 169-73 (discussing the advantages and disadvantages of state climate regulation and noting that state climate regulators still long for a national solution).

(485) See supra notes 68-78 and accompanying text (discussing arguments that the public trust doctrine should also limit federal authority in appropriate cases).

(486) PPL Montana, L.L.C. v. Montana, 132 S. Ct. 1215 (2012).

(487) Id. at 1235 (2012) ("Unlike the equal-footing doctrine, however, which is the constitutional foundation for the navigability rule of riverbed title, the public trust doctrine remains a matter of state law....").

(488) Alec L. exrel. Loorz v. McCarthy, 561 F. App'x 7 (D.C. Cir. 2014), cert, denied, No. 14-405, 2014 WL 6860603 (U.S. Dec. 8, 2014).

(489) See Press Release, Our Children's Trust, Kansas Teenager Pledges to Petition Department of Health and Environment for Climate Change Regulations After Court Tells Her to Go to Agency (June 13, 2013), available at http://ourcliildrenstrust.org/sites/default/files/2013.06.13-KansasPR.pdf; Petition for Declaratory Judgment, for Writ of Mandamus and Application for Injunctive Relief, Farb v. Kansas, (No. 12-C-1133), 2012 WL 5974335 (D. Kan. Oct. 18, 2012).

(490) Alec L. exrel. Loorz v. McCarthy, 561 F. App'x 7 (D.C. Cir. 2014), cert, denied, No. 14-405, 2014 WL 6860603 (U.S. Dec. 8, 2014).

(491) Chemaik v. Kitzhaber, 263 Or. App. 463, 481 (2014) ("[P]laintiffs are entitled to a judicial declaration of whether, as they allege, the atmosphere 'is a trust resource' that 'the State of Oregon, as a trustee, has a fiduciary obligation to protect ... from the impacts of climate change....'") (citing the Plaintiffs-Appellant's Opening Brief at 13, 29, Chemaik v. Kitzhaber, 263 Or. App. 463 (2014) (No. A151856)).

(492) Sanders-Reed exrel. Sanders-Reed v. Martinez, No. 33,110, 2015 WL 1120403 (N.M. Ct. App. 2015).

(493) Id.

(494) Butler v. Brewer, No. 1 CA-CV 12-0347, 2013 WL 1091209, at *1, *5-7 (Ariz. Ct. App. March 14, 2013) (rejecting the argument that determinations of what resources are included in the public trust doctrine and whether the state has violated the doctrine are non-justiciable, but ultimately dismissing the case for lack of standing).

(495) James E. Pfander, Forum Shopping and the Infrastructure of Federalism, 17 TEMP. POL. & CIV. RTS. L. REV. 355, 355 (2007) (discussing the use of forum shopping in deciding whether to bring impact litigation claims).

(496) Gerald Torres, Joe Sax and the Public Trust; 45 Envtl. L. 257,393-97 (2015).

(497) Bill Moyers, The Children's Climate Crusade (Public Affairs Television, Inc. Jan. 1, 2015), transcript available at http://billmoyers.com/episode/full-show-climate-crusade/ (last visited Apr. 17, 2015).

(498) Darryl Fears, A "Megadrought " Will Grip U.S. in the Coming Decades, NASA Researchers Say, Wash. Post, Feb. 12, 2015, http://www.washingtonpost.com/national/health-science/todaysdrought-in-the-west-is-nothing-compared-to-what-may -be-coming/2015/02/12/0041646a-b2d911e4-854b-a38dl3486bal_story.html (last visited Apr. 17, 2015) (discussing scientific forecasting that over the next 100 years, soil moisture levels will reach desert levels throughout the western and midwestern states, with devastating consequences for waterways).

(499) See supra notes 458-462 and accompanying text.

(500) See supra notes 58-60 and accompanying text.

(501) See supra note 496 and accompanying text.

(502) 471 A.2d 355, 363-64 (N.J. 1984).

(503) This important distinction also differentiates the public trust doctrine from the police power that is the sole province of state law, an important distinction for those urging a federal trust obligation. See supra notes 62-78 (discussing the interpretive possibility of a federal public trust).

(504) Paul S. Kibel, The Public Trust Navigates California's Bay Delta, 51 NAT. RESOURCES J. 35, 51 (2011).

(505) See Mono Lake Level, supra note 393 (showing that Mono Lake has not reached the target level since Decision 1631).

(506) See Mono Basin Clearinghouse, Mono Lake Levels 1850--Present, http://www.monobasinresearch.org/data/levelyearly.php (last visited Apr. 17, 2015).

(507) See McQuilken, supra note 396 (explaining that exports will be reduced by 70% as the lake reaches a threshold of concern).

(508) Cal. Dep't of Water Res., Water Storage in Selected California Reservoirs, http://cdec.water.ca.gov/cgi-progs/rptsl/STORAGEM (last visited Apr. 17, 2015) (showing declines in storage for several of California's msyor reservoirs).

(509) See supra notes 427-444 (discussing the environmental critique of the public trust doctrine).

(510) See, e.g., Veronica Rocha, Central California Residents Rely on Bottled Water As Wells Run Dry, L.A.. Times, Aug. 27, 2014, http://www.latimes.com/local/lanow/la-me-ln-centralcalifomia-residents-wells-go-dry-20140826-story.html (last visited Apr. 17, 2015).

(511) National Environmental Policy Act of 1969, 42 U.S.C. [section][section] 4321-4370(h) (2012).

(512) Cal. Pub. Res. Code [section] 21081 (West 2007).

(513) Id.

(514) See Owen, supra note 374, at 1122-23 (demonstrating how little actual change this doctrine has wrought in California since Mono Lake).

(515) See generally Michael C. Blumm & Rachel D. Guthrie, Internationalizing the Public Trust Doctrine. Natural Law and Constitutional and Statutory Approaches to Fulfilling the Saxion Vision, 45 U.C. Davis L. Rev. 741 (2012) (discussing various countries' approaches to the public trust doctrine).

(516) See, e.g., Owen, supra note 374 (discussing the preeminent role of administrative agencies in implementing trust-sensitive governance).

(517) Marbury v. Madison, 5 U.S. (1 Cranch) 137 (1803).

(518) Id. at 177.

(519) See supra Part II.A.2 (discussing the trust as a constitutional doctrine).

(520) See Blumm et al., supra note 65, at 494-96 (critiquing Idaho's legislative restriction of the doctrine on grounds that it is an implied constitutional doctrine, like the equal footing doctrine, that should be immune from legislative abolition).

(521) PPL Montana, LLC v. Montana, 132 S. Ct. 1215 (2012).

(522) See generally Matthews, 471 A.2d 355, 361-63 (N.J. 1984) (discussing the evolution of the public trust doctrine).

(523) See supra note 27 and accompanying text.

(524) Idaho Code Ann. [section] 58-1203 (West 2012).

(525) See BLUMM & WOOD, supra note 47, at 4-5 (discussing the origins and nature of the public trust doctrine and noting the open question of "whether the public trust has constitutional force in those instances where it has not been incorporated explicitly into a constitution").

(526) Epstein, supra note 41, at 426-28.

(527) See Mono Lake Level, supra note 393 (listing historical lake levels from 1919 to as recently as February 1, 2015).

(528) McQuilken, supra note 396 ("The lake has declined to a level at which water exports to Los Angeles are, by the terms of the State Water Board's rules, automatically reduced by 70%. DWP will be limited to 4,500 acre-feet of water export, a lake-protecting restriction that no one, until recently, thought would ever be activated again. It was a solemn, though not unexpected outcome, given that California's drought is entering its fourth year and the Mono Lake watershed is officially classified as being under 'exceptional' drought.")

BY ERIN RYAN *

* Professor Erin Ryan, Lewis & Clark Law School; J.D., Harvard Law School; M.A., Wesleyan University. I am deeply indebted to Mike Blumm, Hap Dunning, Carol Rose, Robin Craig, and Rick Frank for their generous and insightful comments, to Gabe Hinman and Ashley Garcia for their outstanding research assistance, and to the editors of Environmental Law for their exhaustive efforts in helping to prepare this piece for publication. I will always be grateful to the Mono Lake District of the Inyo National Forest, the Mono Lake Committee, and the community of Lee Vining, CA for welcoming me home so many years ago, and for inspiring the professional journey that began with this story. Finally, I dedicate this piece to the memory of Joseph Sax, whose work changed my life, as it has so many others.
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Title Annotation:IV. The Mono Lake Litigation through V. Conclusion, with footnotes, p. 603-640; Developments in the Public Trust
Author:Ryan, Erin
Publication:Environmental Law
Date:Mar 22, 2015
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