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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.

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From Drought to Deluge

By Jeffrey Mount

The recent storms made a dent in the California drought but have not washed away major water policy challenges.

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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?

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Video: Making the Most of a Wet Year

By Sarah Bardeen

Last week, we hosted an expert panel to discuss how we’re handling the sudden deluge of precipitation after years of drought. While the rain and snow has helped transform what was a grim water supply situation, it’s clear that we need to do a better job of preparing for floods—and storing some of that excess water for the dry times that will return.

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Tackling Cold-water Droughts in a Changing Climate

By Jeffrey Mount, Michael Dettinger

Drought comes in many forms in California, but one common type of drought isn’t receiving enough attention: the cold-water drought. Our senior fellow Jeffrey Mount and researcher Mike Dettinger explain what a cold-water drought is—and why it matters so much.

Report

Managing Drought in a Changing Climate: Four Essential Reforms

By Jeffrey Mount, Ellen Hanak, Jay Lund, Paul Ullrich ...

This report reviews climate pressures that are stressing the state’s water system, and describes reforms to help California prepare for greater extremes and growing water scarcity.

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California’s 21st Century Megadrought

By Jeffrey Mount, Michael Dettinger

California is in the midst of a decades-long drought, which mimics what climate change is expected to bring. Water management should adapt accordingly.

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