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 | 04 Feb 2026 | 3.10 | 71 | 1.97 | 2.69 | 3.77 | 4.37 | 4.68 | 5.81 | 9.00 | 4.37 | 100 |
| Bighorn | 04 Feb 2026 | 5.35 | 83 | 4.35 | 5.03 | 5.87 | 6.47 | 7.44 | 8.41 | 10.22 | 6.66 | 103 |
| Cheyenne | 04 Feb 2026 | 3.80 | 78 | 2.10 | 2.93 | 4.00 | 4.85 | 5.05 | 6.08 | 9.00 | 4.25 | 88 |
| Laramie | 04 Feb 2026 | 5.14 | 55 | 4.83 | 6.73 | 8.07 | 9.30 | 10.10 | 12.56 | 16.15 | 8.07 | 87 |
| Little Snake | 04 Feb 2026 | 8.19 | 64 | 7.85 | 9.31 | 10.48 | 12.79 | 13.87 | 16.64 | 22.83 | 10.89 | 85 |
| Lower Green | 04 Feb 2026 | 5.75 | 79 | 5.31 | 6.51 | 6.94 | 7.29 | 8.16 | 10.37 | 15.01 | 7.45 | 102 |
| Lower North Platte | 04 Feb 2026 | 2.45 | 38 | 2.08 | 4.57 | 5.55 | 6.47 | 7.59 | 8.90 | 13.57 | 5.33 | 82 |
| Madison | 04 Feb 2026 | 11.22 | 89 | 5.67 | 9.33 | 11.48 | 12.54 | 15.03 | 19.34 | 29.00 | 11.22 | 89 |
| Powder | 04 Feb 2026 | 4.24 | 76 | 2.90 | 4.33 | 5.00 | 5.59 | 6.38 | 7.28 | 9.22 | 4.99 | 89 |
| Shoshone | 04 Feb 2026 | 11.33 | 100 | 5.90 | 8.46 | 9.98 | 11.28 | 12.59 | 15.80 | 22.47 | 10.05 | 89 |
| Snake | 04 Feb 2026 | 12.34 | 90 | 8.37 | 10.08 | 11.91 | 13.67 | 15.02 | 17.86 | 27.02 | 13.31 | 97 |
| South Platte | 04 Feb 2026 | 0.20 | 4 | 1.00 | 1.91 | 3.12 | 5.40 | 5.57 | 6.00 | 8.10 | 2.10 | 39 |
| Sweetwater | 04 Feb 2026 | 7.27 | 100 | 5.33 | 6.17 | 6.66 | 7.27 | 8.80 | 11.96 | 16.10 | 8.00 | 110 |
| Tongue | 04 Feb 2026 | 4.04 | 61 | 3.64 | 5.24 | 6.27 | 6.64 | 7.66 | 9.09 | 11.18 | 6.69 | 101 |
| Upper Bear | 04 Feb 2026 | 7.64 | 78 | 6.66 | 7.74 | 9.02 | 9.79 | 12.55 | 16.66 | 23.23 | 8.98 | 92 |
| Upper Green | 04 Feb 2026 | 9.60 | 97 | 5.88 | 7.74 | 9.29 | 9.90 | 11.05 | 14.69 | 22.26 | 10.04 | 101 |
| Upper North Platte | 04 Feb 2026 | 9.27 | 67 | 9.38 | 11.02 | 12.73 | 13.82 | 15.47 | 19.58 | 24.66 | 12.73 | 92 |
| Wind | 04 Feb 2026 | 7.82 | 104 | 5.26 | 6.49 | 7.19 | 7.54 | 8.96 | 10.46 | 15.24 | 7.74 | 103 |
| Yellowstone | 04 Feb 2026 | 15.18 | 111 | 7.83 | 10.14 | 11.88 | 13.69 | 14.55 | 17.55 | 26.77 | 11.87 | 87 |