Water Resources Data System & State Climate Office
Water Resources Data System & State Climate Office
Water Resources Data System & State Climate Office



| Basin Click to View Chart | Date | Today SWE (inches) | Today SWE % of Median | Minimum SWE (in) | 10th Percentile (inches) | 30th Percentile Inches | Median (inches) | 70th Percentile (inches) | 90th Percentile (inches) | Maximum (inches) | Last Year SWE (inches) | Last Year SWE % of Median |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belle Fourche | 25 Jan 2026 | 1.97 | 51 | 1.97 | 2.57 | 3.10 | 3.83 | 4.30 | 5.43 | 7.90 | 4.30 | 112 |
| Bighorn | 25 Jan 2026 | 5.00 | 84 | 3.68 | 4.56 | 5.47 | 5.96 | 7.01 | 7.94 | 9.12 | 5.65 | 95 |
| Cheyenne | 25 Jan 2026 | 2.60 | 63 | 2.10 | 2.72 | 3.48 | 4.15 | 4.46 | 5.85 | 7.90 | 4.20 | 101 |
| Laramie | 25 Jan 2026 | 4.89 | 57 | 4.55 | 6.23 | 7.21 | 8.51 | 9.17 | 11.91 | 14.47 | 7.24 | 85 |
| Little Snake | 25 Jan 2026 | 7.79 | 68 | 7.66 | 8.29 | 9.30 | 11.53 | 12.89 | 15.37 | 20.10 | 10.04 | 87 |
| Lower Green | 25 Jan 2026 | 5.56 | 84 | 5.01 | 5.66 | 6.20 | 6.60 | 7.44 | 9.62 | 13.33 | 6.58 | 100 |
| Lower North Platte | 25 Jan 2026 | 2.23 | 37 | 1.62 | 3.98 | 5.04 | 6.00 | 7.21 | 8.09 | 11.65 | 5.33 | 89 |
| Madison | 25 Jan 2026 | 11.00 | 94 | 5.62 | 8.51 | 10.59 | 11.72 | 13.85 | 18.05 | 26.76 | 8.92 | 76 |
| Powder | 25 Jan 2026 | 3.94 | 76 | 2.66 | 3.87 | 4.64 | 5.16 | 5.80 | 6.80 | 8.37 | 4.63 | 90 |
| Shoshone | 25 Jan 2026 | 11.07 | 106 | 5.58 | 7.86 | 9.21 | 10.42 | 11.79 | 14.33 | 19.58 | 7.15 | 69 |
| Snake | 25 Jan 2026 | 12.12 | 99 | 6.76 | 9.09 | 10.67 | 12.30 | 13.98 | 16.58 | 23.80 | 10.08 | 82 |
| South Platte | 25 Jan 2026 | 0.10 | 2 | 0.90 | 1.91 | 2.75 | 4.80 | 5.04 | 5.67 | 7.80 | 2.00 | 42 |
| Sweetwater | 25 Jan 2026 | 7.37 | 110 | 4.67 | 5.34 | 6.33 | 6.73 | 7.97 | 11.27 | 15.60 | 5.60 | 83 |
| Tongue | 25 Jan 2026 | 3.70 | 62 | 2.99 | 4.87 | 5.52 | 5.99 | 7.07 | 8.44 | 10.57 | 5.80 | 97 |
| Upper Bear | 25 Jan 2026 | 7.31 | 84 | 5.50 | 7.21 | 7.80 | 8.71 | 10.87 | 15.28 | 20.31 | 7.54 | 87 |
| Upper Green | 25 Jan 2026 | 9.40 | 105 | 5.23 | 7.01 | 7.80 | 8.99 | 10.25 | 13.50 | 19.82 | 7.29 | 81 |
| Upper North Platte | 25 Jan 2026 | 8.72 | 69 | 8.25 | 9.95 | 11.38 | 12.65 | 14.10 | 16.96 | 22.20 | 11.57 | 91 |
| Wind | 25 Jan 2026 | 7.69 | 110 | 4.87 | 5.53 | 6.63 | 7.02 | 8.21 | 10.07 | 13.96 | 5.39 | 77 |
| Yellowstone | 25 Jan 2026 | 14.89 | 118 | 7.25 | 9.13 | 11.11 | 12.57 | 13.41 | 16.79 | 24.03 | 9.23 | 73 |