Track California Snow Conditions

The California Department of Water Resources (DWR) California Cooperative Snow Surveys (CCSS) program supports DWR’s water supply forecasting and flood management missions:

  • One of DWR’s longest standing programs, a model of cooperation and collaboration
  • Facilitates the cooperative sharing of data among California water management agencies
  • Issues regular water supply forecasts each winter and spring
  • Facilitates technical improvements in forecasting tools and technology
  • Serves as a clearinghouse for dealing with challenges and taking advantage of opportunities for improvement

estimation of snow water volume in million acre-feet as of

of California's freshwater supplied by snowpack
years in operation
active cooperating agencies

Snowpack as of

Statewide Northern Region Central Region Southern Region
Percent of normal to date
Percent of April 1st average