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The Colorado River’s Hydrology is Changing. Can We Adapt?

By Letitia Grenier, Sarah Bardeen

The Colorado River’s hydrology is changing—and the dwindling water supplies are hitting Southern California hard. We sat down with Colorado River Board of California’s chairman JB Hamby and Metropolitan Water District’s Bill Hasencamp to find out what’s next for the river.

blog post

Addressing Groundwater Overdraft in the Sacramento Valley

By Spencer Cole, Kyle Greenspan, Andrew Ayres

As the Sacramento Valley seeks to bring its groundwater basins into balance under SGMA, the valley’s groundwater sustainability agencies recently submitted plans to manage overdraft. Do the numbers add up? Our researchers take a look.

data set

PPIC Urban Water Use Standards Analysis

This spreadsheet includes data on reported water uses, calculated water use objectives, and estimated compliance costs of meeting new urban water use standards to comply with the 2018 Making Conservation a California Way of Life legislation for 398 retail urban water suppliers across California. It accompanies the November 2023 blog post “A Better Way to Promote Urban Water Conservation.”

blog post

A Better Way to Promote Urban Water Conservation

By David Mitchell, Ellen Hanak

Californians have been making great strides in water conservation in recent years. Now the State Water Board is considering new urban water use regulations whose statewide costs would far exceed their benefits—and significantly impact affordability. Are there better approaches? We take a look.

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