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, 16 March 2026

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 River95
Upper Yellowstone-Madison82
Wind River112
Bighorn105
Shoshone84
Powder-Tongue104
Belle Fourche77
Upper North Platte River69
Lower North Platte - Sweetwater - Laramie65
Little Snake River62
Upper Green River72
Lower Green River92
Upper Bear River53
South Platte River66

NRCS Homepage | Water Resources Data System Homepage