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What Are Baseflow Droughts—and Why Should We Care?

By Sarah Bardeen

For the six months when California receives no rain, how do its rivers keep flowing? The answer is groundwater. But increasingly frequent and intense droughts are having unexpected effects on this vital resource. We speak with two experts to learn more.

blog post

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.

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Stewarding California’s Wet Years

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 conditions of the 2023 water year—and what lessons can we glean for the future? We speak with three panels of experts to find out.

blog post

Measuring Groundwater Overdraft in the Sacramento Valley

By Spencer Cole, Kyle Greenspan, Andrew Ayres

As the Sacramento Valley works to bring its groundwater basins into balance, we review the valley’s groundwater sustainability plans to understand how they’re estimating overdraft in their basins—and to see just how much overpumping they found.

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