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California relies on water stored during wet years for use during dry years.
Water storage, both above and below ground is critical to California. 
 
This map shows how much water is in California’s major above-ground storage.
These California’s Daily Reservoir Levels, per Department of Water Resources’ CDEC, is the water currently stored in our above-ground water storage.

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Looking for more detailed information about reservoir levels? Check out this chart, updated daily by the Department of Water Resources

Golden Mussels: A Looming Crisis for California’s Farms and Water Supply

The golden mussel, an invasive species from East and Southeast Asia, is spreading rapidly in the Sacramento-San Joaquin Delta since its discovery in October 2024. This tiny invader threatens California’s $50 billion agricultural industry by clogging irrigation systems, which could disrupt water deliveries, reduce farm production, and raise food prices. Efforts are underway to monitor and control its spread to protect our food supply.

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Central Valley Project Water South of Delta Allocation Rises to 55%

This week, the U.S. Bureau of Reclamation announced an increase in the Central Valley Project (CVP) water allocation for south-of-Delta agricultural contractors, raising it from 50% to 55% for the 2025 water year. While this modest increase offers some relief to farmers, farm workers, and rural communities in the San Joaquin Valley, it underscores the ongoing challenges of California’s unreliable water supply system. Insufficient water allocations have far-reaching consequences, not only for agriculture but also for the nation’s food supply.

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