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 | 28 Jan 2026 | 2.13 | 53 | 1.97 | 2.55 | 3.35 | 4.00 | 4.52 | 5.55 | 8.00 | 4.33 | 108 |
| Bighorn | 28 Jan 2026 | 5.17 | 85 | 3.77 | 4.75 | 5.44 | 6.08 | 7.07 | 8.07 | 9.45 | 5.75 | 95 |
| Cheyenne | 28 Jan 2026 | 2.70 | 61 | 2.10 | 2.73 | 3.67 | 4.40 | 4.88 | 5.97 | 8.00 | 4.20 | 95 |
| Laramie | 28 Jan 2026 | 5.17 | 59 | 4.62 | 6.38 | 7.52 | 8.70 | 9.36 | 12.34 | 15.47 | 7.60 | 87 |
| Little Snake | 28 Jan 2026 | 7.94 | 67 | 7.84 | 8.44 | 9.52 | 11.84 | 13.26 | 15.70 | 21.32 | 10.31 | 87 |
| Lower Green | 28 Jan 2026 | 5.51 | 81 | 5.14 | 5.66 | 6.52 | 6.80 | 7.53 | 9.92 | 14.37 | 6.61 | 97 |
| Lower North Platte | 28 Jan 2026 | 2.38 | 39 | 1.62 | 4.04 | 5.28 | 6.15 | 7.33 | 8.34 | 12.28 | 5.40 | 88 |
| Madison | 28 Jan 2026 | 10.98 | 92 | 5.62 | 8.55 | 10.70 | 12.00 | 14.33 | 18.35 | 27.46 | 8.96 | 75 |
| Powder | 28 Jan 2026 | 4.16 | 79 | 2.77 | 3.98 | 4.72 | 5.24 | 5.90 | 6.96 | 8.60 | 4.70 | 90 |
| Shoshone | 28 Jan 2026 | 11.10 | 104 | 5.63 | 8.02 | 9.65 | 10.63 | 12.01 | 14.67 | 20.75 | 7.23 | 68 |
| Snake | 28 Jan 2026 | 12.21 | 96 | 7.17 | 9.47 | 10.82 | 12.70 | 14.32 | 16.75 | 25.61 | 10.12 | 80 |
| South Platte | 28 Jan 2026 | 0.20 | 4 | 1.00 | 1.81 | 3.00 | 4.90 | 5.14 | 5.59 | 7.90 | 2.20 | 45 |
| Sweetwater | 28 Jan 2026 | 7.43 | 109 | 4.70 | 5.42 | 6.41 | 6.83 | 8.36 | 11.49 | 15.67 | 5.63 | 82 |
| Tongue | 28 Jan 2026 | 3.87 | 63 | 3.13 | 4.89 | 5.86 | 6.14 | 7.28 | 8.59 | 10.82 | 5.87 | 96 |
| Upper Bear | 28 Jan 2026 | 7.36 | 82 | 5.42 | 7.62 | 8.11 | 8.96 | 11.02 | 15.81 | 22.34 | 7.62 | 85 |
| Upper Green | 28 Jan 2026 | 9.51 | 103 | 5.41 | 7.09 | 8.08 | 9.21 | 10.27 | 13.62 | 21.46 | 7.32 | 79 |
| Upper North Platte | 28 Jan 2026 | 8.91 | 69 | 8.61 | 10.23 | 11.73 | 12.98 | 14.59 | 17.86 | 23.49 | 11.97 | 92 |
| Wind | 28 Jan 2026 | 7.74 | 108 | 5.03 | 5.66 | 6.66 | 7.16 | 8.32 | 10.18 | 14.84 | 5.48 | 77 |
| Yellowstone | 28 Jan 2026 | 15.00 | 117 | 7.30 | 9.50 | 11.46 | 12.87 | 13.63 | 17.10 | 25.11 | 9.36 | 73 |