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 Thursday, 21 May 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

Basin	SWE (% of Average)
Snake River	42
Upper Yellowstone-Madison	45
Wind River	81
Bighorn	35
Shoshone	54
Powder-Tongue	68
Belle Fourche	6
Upper North Platte River	23
Lower North Platte - Sweetwater - Laramie	0
Little Snake River	0
Upper Green River	33
Lower Green River	12
Upper Bear River	85
South Platte River	17