Water Supply Information

Seasonal Runoff Forecasts

• Monthly Bulletin 120 river runoff forecast (issued from February 1 through May 1):  Latest  |  Previous
• Weekly update to the Bulletin 120 river runoff forecast (issued from February through June):  Latest  |  Previous
• 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): Latest | Previous
• 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

• California Water Supply Outlook - Statewide Water Conditions
• Current statewide hydrologic conditions summary
• Observed Full Natural Flow Reports
• Snow Survey home page
• State Water Project water deliveries announcements
• Central Valley Project water operations forecasts
• Drought preparedness information
• Listing of water utilities (by country/state)