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Early season heat is rapidly wiping out California’s giant, frozen reservoir – the Sierra Nevada snowpack. Snow is melting fast, even at the highest elevations. In the last 12 days alone, the statewide snowpack has begun melting, on average, 1 percent per day, according to data taken from a network of snow pillows -- sensors that weigh overlying sn ...
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For California water managers, the painfully sunny skies of March 2026 bear striking resemblance to March 2021.
DWR is leading the Georgiana Slough Effectiveness Study in partnership with UC Davis.
California’s water system is one of the most complex and important in the world. It delivers water to millions of people across the state and supports ecosystems that are vital to California’s environmental health.
Appearing like something out of science fiction, harmful algal blooms (HABs) can form thick mats that accumulate on freshwater surfaces throughout California.
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The State Water Project was developed in the 1960s to support the California economy.