Graph of Percent Average Snow Water Equivalent
Wyoming Basins

For percentages for individual SnoTels, see either the Map or the Station Listing with Charts

Updated Monday, 17 November 2025

Percent of Average Key
< 25 25 to 50 50 to 75 75 to 90 90 to 110
110 < 125 125 to 150 150 to 175 175 to 200 > 200

BasinSWE (% of Average)
Snake River54
Upper Yellowstone-Madison38
Wind River79
Bighorn60
Shoshone50
Powder-Tongue74
Belle Fourche51
Upper North Platte River27
Lower North Platte - Sweetwater - Laramie12
Little Snake River15
Upper Green River29
Lower Green River80
Upper Bear River14
South Platte River17

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