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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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California’s Water: Protecting Headwaters

By Ellen Hanak, Jeffrey Mount, Van Butsic, Joshua Viers ...

Mountainous regions provide most of the state’s water supply. But major problems loom— from a growing risk of wildfires to a shrinking snowpack. This brief outlines ways California and the federal government—the largest landowner in headwater areas—could address critical problems in these areas.

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Managing Wastewater in a Changing Climate

By Caitrin Chappelle, Henry McCann, David Jassby, Kurt Schwabe

California’s wastewater sector helps protect public health and the environment. It is also the source of recycled water. But climate change is bringing water scarcity and other pressures to the sector. Shifts in policy and planning can help prepare the sector for a more volatile future.

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Storing Water for the Environment

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

Large reservoirs are essential for managing water in California’s highly variable climate—but over the years, the construction and operation of these reservoirs have had significant environmental costs. Our new research outlines how reservoir operations could be changed to improve the health of the state’s fragile freshwater ecosystems.

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