Snowpack
Snow season overCalifornia snowpack
Statewide snow water equivalent vs the 1991-2020 median
Data through Oct 15, 2026 · source last checked Oct 17, 2026 · page revised Oct 17, 2026
Cite
- This snow year
- 1991-2020 median
About this data
- Source
- USDA NRCS SNOTEL (Air-Water Database)
- Series
- Snow water equivalent (WTEQ), basin-index percent of the 1991-2020 median
- Geography
- California
- Unit
- in
- Calculation
- Daily reading, aggregated across reporting SNOTEL stations
- Last observation
- Jun 21, 2026
- Update frequency
- Daily in season (Oct-Jun); melts out by mid-summer
Snow year complete. California's snowpack peaked at 0.0 in of snow water equivalent around Oct 1, 2026. The 2028 snow year begins October 1.
California's snowpack peaked at 0.0 in of snow water equivalent this season around Oct 1 and stands at 0 in as of Oct 15. Water-year precipitation to date is 0.1 in, 25% of the 1991-2020 median.
| Measure | Value |
|---|---|
| This season's peak (SWE) | 0.0 in on Oct 1, 2026 |
| Percent of median at last snow reading | 0% (Jun 21, 2026) |
| Water-year precipitation to date | 0.1 in (25% of median) |
Previous weeks
An earlier week
California's snowpack peaked at 0.0 in around Oct 12, 2026, with the snow year now complete. Water-year precipitation to date stands at 0.1 in, 29% of the 1991-2020 median.
Week of Oct 7, 2026
California's snowpack peaked at 0.1 in of SWE around Oct 2 and fell to 0.059375 in by Oct 7. Water-year precipitation stands at 0.0 in, 21% of the 1991-2020 median.
Week of Sep 30, 2026
California's snowpack peaked at 14.7 in of snow water equivalent on Feb 19, 2026, 67% of the normal 21.7 in peak. Water-year precipitation totaled 3.3 in, 87% of the 1991-2020 median.
Week of Sep 23, 2026
California's snowpack peaked at 14.7 in of snow water equivalent on Feb 19, 2026, 67% of the normal peak of 21.7 in. The pack had melted away nearly completely by Sep 23 as the water year ended. Water-year precipitation totaled 35.8 in, 102% of the 1991-2020 median.
About California snowpack
Snow water equivalent (SWE) is the depth of water held in the snowpack, and it is the single number that best predicts the coming spring and summer runoff. Depth alone can mislead: a deep, dry snowpack can hold less water than a shallow, dense one.
The Waterline reads California's snowpack from the USDA Natural Resources Conservation Service SNOTEL network using the standard basin-index method. It sums the current water content across every reporting SNOTEL station in California (32 on the latest reading), divides by the sum of those same stations' 1991-2020 medians for the date, and reports the ratio as percent of median, so a deep high-elevation site counts for more than a shallow valley one and a station with no long-term normal never distorts the number. The inch figures shown here are the average snow water equivalent across those reporting stations.
Snow builds from about October, normally peaks near April 1, and melts out by early summer. Once the normal snowpack for the date nears zero, percent of median stops being a meaningful number, so this page reports the season's peak instead of a percentage until the snow returns.