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 Tuesday, 28 April 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	61
Upper Yellowstone-Madison	64
Wind River	93
Bighorn	57
Shoshone	69
Powder-Tongue	67
Belle Fourche	30
Upper North Platte River	46
Lower North Platte - Sweetwater - Laramie	5
Little Snake River	6
Upper Green River	36
Lower Green River	41
Upper Bear River	7
South Platte River	13