Water Law Commons^™

The Colorado River Upper Initial Units Take Center Stage, Eric Kuhn, Anne Castle, Jack Schmidt, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

In 1956, Congress authorized the Upper Initial Units—Flaming Gorge Reservoir,

Navajo Reservoir, and the Aspinall Unit (UIUs)—for a variety of water use

purposes in the Upper Colorado River Basin, including compliance with the

1922 Colorado River Compact (1922 Compact). The historical record is clear

that the primary reason these reservoirs exist is to satisfy the math of the 1922

Compact and the obligations it imposed on the Upper Division States

regarding flows at Lee Ferry.

The Colorado River Water Supply Crisis In A Few Graphs: Part 2 Agricultural Water Use In The Lower Basin, Jack Schmidt, Anne Castle, Eric Kuhn, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

Reductions in Lower Basin water use during the last four years, including

forecast use in 2026, are similar to the initial targets for Lower Basin shortages

described in the Final Environmental Impact Statement for Post-2026

Operational Guidelines and Strategies for Lake Powell and Lake Mead (FEIS)

and the accompanying Record of Decision (ROD).

6 Lower Basin consumptive

use in 2023, 2024, and 2025, and forecast for 2026 has been the smallest for

the entire 2010-2026 period. These four years of smallest use are between 1.4

and 1.7 million acre feet/year (maf/yr) less than the 7.50 maf/yr amount

generally recognized as …

A Significant Moment In The Colorado River Water Supply Crisis, Jack Schmidt, Anne Castle, John Fleck, Eric Kuhn, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

On Sunday, July 12, the surface of Lake Powell was 3524.32 feet above sea level, and the surface of Lake Mead was at 1042.77 ft.7 These elevations equated to 5,505,869 and 7,169,640 acre feet (af), respectively, of live storage in the two reservoirs. The combined total live storage of these reservoirs was 12,675,509 af. The last time the combined total live storage in Lake Powell and Lake Mead was this small was May 23, 1957, during construction of Glen Canyon Dam when the entire amount of 12,668,000 af was stored in Lake Mead.

The Colorado River Water Supply Crisis In A Few Graphs: Part 1, Jack Schmidt, Anne Castle, Eric Kuhn, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

In 2026 and for only the third time in the 21st century, there was no accumulation, and no recovery, of total Basin live storage6 during the snowmelt season. Nor was there any accumulation or recovery of total live storage in Lake Powell and Lake Mead during the 2026 snowmelt season. Total Basin live storage (hereafter, total Basin storage) is all the water available in the Colorado River Basin’s reservoir “savings account” and stored in reservoirs within the watershed.7 On June 1, total Basin storage was 22.94 million acre feet (maf), only 1.62 maf above the previous minimum of March 20238 …

Jurisdictional Waters, Jamison E. Colburn

Faculty Scholarship

No abstract provided.

Update: Colorado River Basin Storage Continues Slide Toward System Crash, Anne Castle, Jack Schmidt, Eric Kuhn, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

If the Colorado River Basin (Basin) experiences another dry year, similar to Water Year 2025, it is likely that reasonably accessible storage in Lake Powell and Lake Mead would be mostly depleted, even if consumptive uses and losses are at or near historic lows. Run-of-the-river operations would shortly ensue. This would be an outcome with devastating consequences. In contrast, if next year is very wet, similar to Water Year 2023, the Basin’s largest federal reservoirs would recover somewhat, but would provide only about two years of cushion before we find ourselves again in the same position we are in today, …

The Legal Framework For Direct Ocean Carbon Capture And Storage (Volume 2: The United States), Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

This paper, the second in a series of two, focuses on the U.S. legal framework for the marine carbon dioxide removal (mCDR) approach of direct ocean carbon capture and storage (DOCCS). The first explores DOCCS governance under international law and is available here: https://scholarship.law.columbia.edu/sabin_climate_change/271/.

DOCCS aims to remove some of the carbon currently stored in the ocean and thereby enable it to uptake additional carbon dioxide from the atmosphere. DOCCS is still undergoing research, but early studies suggest it could have significant carbon dioxide removal potential. However, DOCCS could also present environmental and other risks, including from the construction …

Groundwater Laws And Regulations: Survey Of Twenty-One U.S. States, Rebekah Acosta-Hueston, Abigail Adkins, Khadija Alibhai, Olivia Alland, Matthew C. Allen, Dan Archibald, Jeffrey Berk, John Broussard, Justin Cias, Bradford Eckhart, Blakely Fahning, Jackson Field, Michael Flores, Ellen Earl Gillis, Emma Golightly, Merrick Hayashi, David Hernandez, Kate Keithley, Matthew Maslanka, Erin Milliken, Lucas Mylet, Abigail Nichols, James O’Donnell, James Osteen, Connor Pabich, Cheryl Patterson, Rhyan Phillips, Sarah Rathmell, Margaret Reed, Laura Smith, Kelsi Sorrells, Brooke Thoendel, Ani Tookoian, Sandhya Wagle, Margaret Ward, Mackenzie Watson, Carolyn Wheeler, Ashley Wilde

EENRS Program Reports & Publications

This report constitutes the third and final volume in an ongoing project designed to explore and articulate the groundwater quantity laws and regulations of all fifty U.S. states that could then be used for comparative research. This particular report presents surveys for twenty-one states from across the country. The first volume featured thirteen state surveys while the second volume contained sixteen additional state surveys. Both can be found on the project website at: https://www.law.tamu.edu/US-Groundwater-Laws.

Professor Gabriel Eckstein at Texas A&M University School of Law and Professor Amy Hardberger at Texas Tech University School of Law developed an analytical rubric …

Rethinking How The United States And Mexico Share The Colorado River, Eric Kuhn, Anne Castle, Carlos De La Parra, John Fleck, Jack Schmidt, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

Since 1945, the United States and Mexico have managed common interests on their two largest shared rivers systems, the Colorado and the Rio Bravo/Rio Grande, under the terms of the 1944 international treaty that was designed from the beginning with tools to adapt to changing hydrologic and societal conditions. A recent emergency agreement on the Rio Bravo/Rio Grande illustrates what is possible, and with old river management rules on the Colorado both within the United States and between the United States and Mexico about to expire, we are at a moment of opportunity for meaningful change. The core problem on …

Comments On The Draft Environmental Impact Statement On Post-2026 Operational Guidelines And Strategies For Lake Powell And Lake Mead, Anne Castle, John Fleck, Eric Kuhn, Jack Schmidt, Katherine Tara, Kathryn Sorensen

The Traveling Wilburys of the Colorado River

Thank you for the opportunity to submit comments on the Draft Environmental Impact Statement on Post-2026 Operational Guidelines and Strategies for Lake Powell and Lake Mead (DEIS). The undersigned colleagues with experience in Colorado River matters commend the Bureau of Reclamation and its consultants for the tremendous effort involved in preparing this environmental impact analysis. We are especially impressed by Reclamation’s effort to analyze policy alternatives within the context of the deep uncertainty about what future hydrology might be. Your work is novel in its effort to provide the public with a sense of what the performance, robustness, and vulnerability …

Egger Enter., Llc V. State Engineer, 142 Nev. Adv. Op. 18 (Feb. 26, 2026), Hunter Patterson

Nevada Supreme Court Summaries

The State Engineer needs only to address the relevant NRS 534.090(3) factors in a forfeiture proceeding, and retaining unused water rights while seeking new uses does not constitute good-faith diligence.

Gold Standard Ventures (Us) Inc. V. Thorson, 142 Nev. Adv. Op. 10 (Feb. 12, 2026), Lauren Jung

Nevada Supreme Court Summaries

The Court affirmed the district court's dismissal of Orla's petition for judicial review, finding that a party must have an existing personal or property right affected by the challenged decision to have standing. The Court therefore found that Orla had no standing to bring suit.

Lake Powell And Lake Mead Are Moving In Opposite Directions -- What Gives?, Jack Schmidt, Eric Kuhn, Anne Castle, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

No abstract provided.

Considerations For Assigned Water After Expiration Of The 2007 Guidelines, Kathryn Sorensen, Sarah Porter, Anne Castle, John Fleck, Eric Kuhn, Jack Schmidt, Katherine Tara

The Traveling Wilburys of the Colorado River

As Colorado River supplies and demands reach razor-thin margins, new tools to provide adaptive capacity will play a critical role in sustaining communities across the West. We must reduce our consumption of water, while finding ways to cushion the impact. One of the most innovative tools for doing this, developed over the last two decades, is “Assigned Water” - giving users the ability to store conserved water earmarked for their own future use. Originally developed as “Intentionally Created Surplus” in the 2007 Colorado River Interim Guidelines, Assigned Water has been revised and expanded through U.S. Mexico Treaty Minutes and as …

Comparison Of Groundwater Ownership Regimes In Ten Jurisdictions Across Five Continents, Gabriel Eckstein, Theo Buchler, Caleb Cook, Heping Dang, Robyn Stein, Stefano Burchi, Gabriela Cuadrado Quesada, Juan Pablo Galeano, Eric Garner, Amy Hardberger, Imad Antoine Ibrahim, Oudi Kgomongwe

Faculty Scholarship

The regulation of groundwater remains underdeveloped globally and often lags behind the domestic governance of surface water. As a result, groundwater is often subject to unfettered extraction, uses, and contamination. A clear understanding of ownership is central to the success of domestic regulations. However, the types of ownership regime in place in nations around the world are poorly documented in the academic literature. This study addresses that gap through a comparative analysis of domestic groundwater ownership regimes across ten jurisdictions in nine countries spanning five continents. It identifies three dominant models of groundwater ownership: private ownership, public ownership, and non-ownership …

Allocating Electricity, Alexandra Klass, Dave Owen

Articles

The U.S. electricity system is premised on the ideas that utilities have a duty to serve all customers in their service territories and that electricity supply should always meet demand. Until recently, there has been little reason to question these foundational premises. U.S. electricity demand has remained flat for over a decade, and during earlier periods of growth, new energy generation plants were relatively easy to build. Now, however, electricity experts predict massive load growth—most notably from data centers to power artificial intelligence and cryptocurrency—and building new power plants is no longer easy.

Major efforts are underway to increase electricity …

Powering The Machine, Draining The Planet: Whether U.S. Environmental Law Is Equipped To Regulate The Energy And Water Demands Of Ai Data Centers, Michael Marcu

Journal of Earth and Life Science

Artificial intelligence (AI) data centers have become one of the United States' fastest-growing and least-regulated sources of environmental stress. In 2024 alone, U.S. data centers consumed 183 terawatt-hours (TWh) of electricity more than the entire nation of Pakistan and consumed an estimated 17 billion gallons of water (IEA, 2025; Berkeley Lab, 2024). By 2030, electricity demand from these facilities is projected to reach 426 TWh, a 133% increase in six years (Pew Research Center, 2025). This paper examines whether the existing U.S. environmental regulatory framework put by the National Environmental Policy Act (NEPA), the Clean Water Act (CWA), and the …

Sullivan. V. Baker Ranches, Inc., 141 Nev. Adv. Op. 36 (2025), Andre Anaya

Nevada Supreme Court Summaries

No abstract provided.

Analysis Of Colorado River Basin Storage Suggests Need For Immediate Action, Jack Schmidt, Anne Castle, John Fleck, Eric Kuhn, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

Consumptive water use in the Colorado River Basin continues to outpace natural flow. The dwindling reserve stored in reservoirs that has long sustained this shortfall might soon be exhausted. Immediate steps should be taken to reduce current consumptive uses in the Upper and Lower Basins.

Awaiting The Colorado River 24-Month Study, John Fleck, Anne Castle, Eric Kuhn, Jack Schmidt, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

No abstract provided.

Liquid Power: Myths, Realities, And Policy Responses To Wall Street's Takeover Of Water Markets, Vanessa Casado-Pérez

Faculty Scholarship

In Don Quixote, there is a moment when all the knightly novels are thrown into the fire for their fantastical depictions of chivalry. Yet one book is spared: Tirant lo Blanc. It is saved because, unlike the others, it portrays knights who die in their beds-offering a more realistic depiction of medieval battles. Similarly, Liquid Asset stands out as the book that should be preserved from the extensive body of scholarship on water markets. Many works in this field are influenced by ideological biases that shape their analyses. In contrast, Buzz Thompson's books provides the nuance and balance often lacking …

Virgin Valley Water Dist. Vs. Paradise Canyon, Llc, 141 Nev. Adv. Op. 19 (Apr. 24, 2025), Cassandra White

Nevada Supreme Court Summaries

A GOVERNMENT AGENT IS CONSIDERED A PRIVATE PARTY IN CONTRACT DISPUTES, A JUDGE DETERMINES QUESTIONS OF LAW, THE COVENANT OF GOOD FAITH AND FAIR DEALING DOES NOT APPLY TO ACTIONS THAT COMPLY WITH A CONTRACT, ONLY A PERMIT HOLDER IS REQUIRED TO SHOW BENEFICAL USE OF PUBLIC WATER, UNAMBIGOUS CONTRACT PROVISIONS SHOULD BE CONSIDERED, A JUDGE CANNOT TAKE JUDICIAL NOTICE OF THEIR OWN FACTS, ATTORNEY COMMENTS SHOULD NOT BE IRRELEVANT AND INFLAMMATORY, AND TIME LIMITS CANNOT BE ARBITRARILY ENFORCED.

Water Flowing Down Wall Street, Vanessa Casado-Pérez

Faculty Scholarship

Water scarcity is a perennial problem with dire consequences for the United States and governments around the world. A lack of adequate water resources is a systematic cause of environmental harm, economic damage, and societal division. Climate change has exacerbated these problems making water even more valuable and essential.

Financial actors have turned water into the new oil. These large financial actors profiteer from buying and selling water without any interest in its actual use as an input of production. Instead, they typically seek to hold these rights until dire situations, like droughts and fires, cause temporary, but large, spikes …

Essential Pillars For The Post-2026 Colorado River Guidelines, Anne Castle, John Fleck, Eric Kuhn, Jack Schmidt, Kathryn Sorensen, Katherine Tara

The Traveling Wilburys of the Colorado River

The process for determining the operating rules for the Colorado River system that will take effect in 2027 is in full swing. While various alternative operating regimes have been proposed, no preferred or consensus alternative has yet emerged. As a group of experienced Colorado River colleagues without affiliation to any Basin State, Tribe, or interested stakeholder, we submit that there are fundamental principles that should form the basis of the ultimate Record of Decision defining management of the Colorado River for the future. We propose the following essential pillars for inclusion in the Post-2026 Guidelines.

Introduction – Emerging Pollutants In Water: Threats, Challenges, And Research Needs, Sarantuyaa Zandaryaa, Ali Fares, Gabriel Eckstein

Faculty Scholarship

Water is indispensable for life, health, and environmental sustainability, as underscored by the United Nations Sustainable Development Goals. Traditional water quality assessments have historically focused on pathogens, nutrients, and heavy metals. However, recent decades have witnessed growing concerns over Contaminants of Emerging Concern (CECs), a diverse class of pollutants with potential risks to human health and ecosystems. CECs encompass pharmaceuticals, personal care products, endocrine-disrupting compounds, and microplastics, entering water bodies via wastewater, industrial discharge, and agricultural runoff. Their persistence and adverse effects pose significant challenges to water treatment technologies. This manuscript explores the scientific understanding, environmental fate, and societal implications …

Environmental Geography And Law: Toward A Synthesis, Michaela Anang-Hadjicostandi, Sophia Borgias, Karrigan Börk, Ann M. Eisenberg, Guadalupe M. Franco, Cinnamon Carlarne Hirokawa, Keith H. Hirokawa, Jonathan London, Melinda Morgan, Jessica Owley, Shannon Roesler, Sonya Ziaja

Articles

This Article introduces the new interdisciplinary field of Environmental Geography and Law, which has deep roots in ecology, social science, and law. Environmental and natural resources laws are situated in specific times and places where the climate, ecosystems, history and political economy influence both the land and the law. These places drive and constrain the way law develops. In turn, the law shapes places, from the dispossession and forced migration of indigenous groups, to land development via railroad land grants, to patterns of resource extraction and infrastructure development. Past efforts to integrate law and geography have focused more on critical …

Science-Based Policy Recommendations For Managing Emerging Pollutants: Protecting Water Quality For The Health Of People And The Environment, Sarantuyaa Zandaryaa, Ali Fares, Gabriel Eckstein, Regina M. Buono, Mary Trudeau, James E. Nickum, Xingui Xia, Atikur Rahman, Marijn Korndewal, Cassiana C. Montagner, Piero R. Gardinali, Robert Michael Di Filippo, Anoop Veettil

Faculty Scholarship

Emerging water pollutants are a growing global concern due to their ubiquitous presence in water resources worldwide and their potential adverse effects on human health and ecosystems. Limited scientific understanding of sources of emerging pollutants’ emissions to water bodies and their pathways, behaviour, and fate in aquatic environments, as well as human health and ecological effects, is a significant hindrance in managing emerging water pollutants. With exceptions concerning PFAS/PFOS and microplastic beads, there are few regulations for emerging pollutants in national water and environmental policies, which results in a critical gap in safeguarding human health and aquatic ecosystems through effective …

Reservoir Storage In Mid-March: Where Do We Stand?, Jack Schmidt, John Fleck, Kathryn Sorensen, Eric Kuhn, Katherine Tara

The Traveling Wilburys of the Colorado River

No abstract provided.

The Extraordinary Drought Provision And The Future Of The Rio Grande Water Deliveries Under The 1944 Us–Mexico Water Treaty: An Exploratory Policy Analysis, Rosario Sanchez, Stephen P. Mumme, Gabriel Eckstein

Faculty Scholarship

The ‘extraordinary drought’ provision contained in the legal framework governing water allocation between Mexico and the United States has been applied differently on the Colorado River, Upper Rio Grande, and Lower Rio Grande. While the provision has been interpreted to require proportional water allocation reductions during droughts for both parties on the Colorado and Upper Rio Grande, it has been applied very differently on the Lower Rio Grande where it binds Mexico to make up delivery shortfalls in subsequent cycles. Given climatic, economic, and population pressures in the Lower Rio Grande basin, application of the ‘extraordinary drought’ provision requires reconsideration.

Exploring Managed Retreat Pathways To Community-Led Resilience 1-31-2025, Roger Williams University School Of Law, Marine Affairs Institute

School of Law Conferences, Lectures & Events

No abstract provided.