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Policy Brief

Policy Brief: Storing Water for the Environment

By Sarah Null, Jeffrey Mount, Brian Gray, Kristen Dybala ...

To protect and restore California’s freshwater ecosystems and respond to the changing climate, California’s water managers must change how they operate reservoirs. Our policy brief offers recommendations for how to do this in a way that makes the most efficient use of scarce water for the environment while minimizing impacts on other water uses.

Report

Allocating California’s Water: Directions for Reform

By Brian Gray, Ellen Hanak, Richard Frank, Richard Howitt ...

California’s water allocation system hampers its ability to meet the state’s needs, especially in times of drought. At its heart is an unusually complex array of water rights. This report summarizes challenges and suggests reforms to strengthen the state’s ability to weather droughts and shifting economic demands for water, while maintaining the existing seniority of water rights.

Read a summary of the report’s policy recommendations.

This research was supported with funding from the S. D. Bechtel, Jr. Foundation.

Report

Priorities for California’s Water

By Jeffrey Mount, Letitia Grenier, Ellen Hanak, Caitlin Peterson ...

California has made great strides in preparing for a drier, hotter future, but it remains a challenge to harness the bounty of wet years while also reducing flood risk. How did California’s water sector manage the unusually wet 2023 water year—and what lessons can we glean for the future?

Policy Brief

Policy Brief: Tracking Where Water Goes in a Changing Sacramento–San Joaquin Delta

By Greg Gartrell, Jeffrey Mount, Ellen Hanak

The Sacramento–San Joaquin Delta supplies water to roughly 30 million Californians, over 6 million acres of farmland, and countless ecosystems. But the watershed’s climate is changing: recent decades have seen record warmth, higher evaporation, and declining snowpack. We track where the water is going—and how to adapt.

Fact Sheet

Climate Change and California’s Water

By Jeffrey Mount, Daniel Swain, Paul Ullrich

Managing water is at the forefront of climate change adaptation in California. Changes are needed to prepare the water system for a more volatile climate.

blog post

Reservoirs Are Full, But Let’s Not Celebrate Just Yet

By Greg Gartrell

After three very dry years, California’s reservoirs will be full again this spring. That beats the alternative, but what will it mean for water supplies over the next few years? PPIC Water Policy Center adjunct fellow Greg Gartrell does the math.

blog post

Testimony: Adapting California’s Water Rights System to the 21st-Century Climate

By Ellen Hanak, Brian Gray, Jeffrey Mount

PPIC Water Policy Center director Ellen Hanak and senior fellows Brian Gray and Jeffrey Mount testified before the Assembly Water, Parks, and Wildlife Committee Informational Hearing, “How Should California’s Water Right System Adapt to a 21st Century Climate?” today. Read their prepared remarks.

Fact Sheet

Dams in California

By Alvar Escriva-Bou, Jeffrey Mount, Jelena Jezdimirovic

Dams are central to California’s water system, providing storage, flood control, electricity, and recreation. Climate change is complicating how they are managed.

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