Water Supply Information
Seasonal Runoff Forecasts
Monthly Bulletin 120 river runoff forecast (issued from February 1 through May 1):
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Weekly update to the Bulletin 120 river runoff forecast (issued from February through June):
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- State map of April through July unimpaired snowmelt runoff Historical Bulletin 120 - Water Conditions in California
Sacramento and San Joaquin Valley Water Year Type Index forecast (issued monthly from December 1 through May 1):
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- Historical Sacramento and San Joaquin Valley Water Year Type Index
- Peak snowmelt runoff forecast (issued from April through June cooperatively with the California-Nevada River Forecast Center)
Water Supply Conditions