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Water Supply Information
- This week's water supply update
- Recent water supply forecasts, current snowpack conditions, and precipitation totals
- Actual and unimpaired river flows; storage in major reservoirs
- Historic water supply indicies
(As specified by SWRCB D-1485, the Sacramento 40-30-30, San Joaquin 60-20-20, and the Four-River Index [formerly known as SRI]) - Information about our data collection infrastructure, including how manual snow surveys are made
- Depth and density explanation
California Cooperative Snow Surveys