California Snow Data

These resources include snow sensor and snow course metadata and measurements and snow water content data. Snow courses are typically sampled manually around the beginning of the month during the February through May period.

The procedure for snow course sampling is detailed in the Snow Survey Procedure Manual. Snow sensor data is automatically collected at 15-minute intervals and is available in daily and monthly intervals in the resources below. The source data and additional data and plots can be accessed from CDEC’s website (cdec.water.ca.gov/snow.html).