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Trends in Amount and Timing of Snowpack in the Western United States

Published by U.S. Environmental Protection Agency, Office of Air and Radiation | U.S. Environmental Protection Agency | Catalog Last Checked: August 03, 2026 at 04:43 AM | Dataset Last Updated: May 20, 2026 at 12:00 AM
This indicator shows trends in snowpack amounts as well as change in peak date of annual snowpack at measurement sites in the western United States. For more information: www.epa.gov/climate-indicators

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