California's Reservoirs

California's Reservoirs are the Foundation of Modern California

Everything about modern California, from our quality of life to our economic and cultural prominence is reliant on stable, reliable water supplies. California has always been a place of variable weather. Reservoirs help us to save water for dry years, and move water where it's needed in the state.

  • California's Reservoirs

    There are more than 1,300 reservoirs in California, providing water supplies, hydroelectric power, fishery and river quality improvements, recreation, and flood protection for California.

    Of these, 36 are considered major reservoirs, providing the bulk of the state's developed water. 

  • CDEC Reservoir Levels Map

    California's Department of Water Resources provides regular updates on water levels at twelve major reservoirs in the state. Click here to view a map of reservoir levels.