Western US SWE Reports

This research product provides near-real-time estimates of snow-water equivalent (SWE) for the western United States at a spatial resolution of 500 m.
We create reports for specific regions approximately every two weeks from mid-winter through the end of the melt season. The reports are released within a week of satellite image data acquisition and are distributed to water managers and forecasters. For more information on reporting or to discuss reporting for your area please contact Leanne.Lestak@colorado.edu.
See also:
Sierra Nevada SWE reports 2019-present (California)
Intermountain West SWE reports 2019-2023 (Colorado, Utah, Wyoming)
2026
Feb 01 (PDF | Tables | JPG maps zip)
2025
All Files for 2025 (2025 zip)
Includes: Report, Tables All Domains, JPG maps
Feb 01 (Tables)
Feb 16 (Tables)
Mar 01 (PDF | Tables | JPG maps zip)
Mar 15, Mar 31, Apr 06, Apr 13, Apr 20, Apr 27, May 03, May 11, May 17, & May 26