California Cooperative Snow Surveys

Welcome to the California snow page! We provide information on water supply conditions throught California in the form of watershed runoff forecasts and snowpack conditions.

NEW! Up-to-the-hour plots of live data with clickable links to over 2,400 sensors statewide. Experimental only!

Snow Surveys is a unit of the state Department of Water Resources.

Water Supply Information

• This week's water supply update, recent water supply forecasts, current snowpack conditions, precipitation totals
• Satellite imagery from a variety of sources
• Actual and unimpaired River flows; storage in major reservoirs
• Depth and Density explanation

General Information

• Read all about Snow Surveys: history, mission, and such. Also, what we do in the summertime, and voice telephone numbers of program staff
• Information about our data collection infrastructure; including how manual snow surveys are made.
• Notes for recreational, scientific, and water manager users of this service.
• Winter road conditions, and official avalance and weather warnings
• Daily temperature minimum and maximum
• Server usage statistics
• Our anonymous FTP server

Other water resources servers

the California Water Page