| 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 |
For percentages for individual SnoTels, see either the Map or the Station Listing with Charts
Updated Friday, 16 October 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 | 36 | |
| Upper Yellowstone-Madison | 23 | |
| Wind River | 33 | |
| Bighorn | 29 | |
| Shoshone | 3 | |
| Powder-Tongue | 15 | |
| Belle Fourche | 14 | |
| Upper North Platte River | 7 | |
| Lower North Platte - Sweetwater - Laramie | 0 | |
| Little Snake River | 0 | |
| Upper Green River | 256 | |
| Lower Green River | 25 | |
| Upper Bear River | 375 | |
| South Platte River | 410 | |