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 | 11 Nov 2025 | 0.37 | 55 | 0.00 | 0.00 | 0.18 | 0.67 | 0.80 | 2.31 | 3.85 | 0.20 | 30 |
| Bighorn | 11 Nov 2025 | 1.27 | 63 | 0.44 | 0.91 | 1.67 | 2.02 | 2.45 | 3.28 | 4.02 | 1.38 | 68 |
| Cheyenne | 11 Nov 2025 | 0.55 | 65 | 0.00 | 0.00 | 0.04 | 0.85 | 0.90 | 2.70 | 3.85 | 0.00 | 0 |
| Laramie | 11 Nov 2025 | 0.43 | 24 | 0.05 | 0.91 | 1.32 | 1.81 | 2.36 | 2.92 | 5.65 | 1.80 | 99 |
| Little Snake | 11 Nov 2025 | 0.41 | 24 | 0.12 | 0.51 | 1.23 | 1.69 | 2.19 | 2.95 | 4.57 | 1.45 | 86 |
| Lower Green | 11 Nov 2025 | 0.90 | 87 | 0.10 | 0.59 | 0.87 | 1.03 | 1.58 | 2.39 | 3.23 | 1.53 | 149 |
| Lower North Platte | 11 Nov 2025 | 0.20 | 14 | 0.00 | 0.13 | 0.70 | 1.38 | 1.84 | 2.99 | 5.30 | 1.73 | 125 |
| Madison | 11 Nov 2025 | 1.18 | 60 | 0.08 | 0.90 | 1.48 | 1.98 | 2.60 | 3.92 | 5.26 | 1.92 | 97 |
| Powder | 11 Nov 2025 | 1.09 | 78 | 0.00 | 0.49 | 1.08 | 1.39 | 1.74 | 2.69 | 3.95 | 0.86 | 62 |
| Shoshone | 11 Nov 2025 | 2.17 | 89 | 0.00 | 1.34 | 1.82 | 2.45 | 3.12 | 4.60 | 5.85 | 1.07 | 44 |
| Snake | 11 Nov 2025 | 1.54 | 72 | 0.15 | 1.11 | 1.69 | 2.15 | 2.59 | 3.26 | 5.09 | 1.32 | 61 |
| South Platte | 11 Nov 2025 | 0.20 | 33 | 0.00 | 0.00 | 0.06 | 0.60 | 0.67 | 1.48 | 2.20 | 0.70 | 117 |
| Sweetwater | 11 Nov 2025 | 1.27 | 95 | 0.00 | 0.67 | 1.02 | 1.33 | 1.97 | 3.38 | 5.70 | 1.67 | 126 |
| Tongue | 11 Nov 2025 | 0.69 | 41 | 0.20 | 0.51 | 1.50 | 1.67 | 2.44 | 3.46 | 3.83 | 1.44 | 86 |
| Upper Bear | 11 Nov 2025 | 0.46 | 39 | 0.11 | 0.46 | 1.01 | 1.18 | 1.68 | 2.94 | 4.79 | 1.09 | 92 |
| Upper Green | 11 Nov 2025 | 1.09 | 70 | 0.22 | 0.81 | 1.29 | 1.56 | 2.14 | 3.05 | 4.85 | 1.14 | 73 |
| Upper North Platte | 11 Nov 2025 | 0.81 | 30 | 0.37 | 1.22 | 2.15 | 2.68 | 3.49 | 4.35 | 6.32 | 2.21 | 82 |
| Wind | 11 Nov 2025 | 1.28 | 68 | 0.42 | 1.02 | 1.57 | 1.87 | 2.60 | 3.44 | 4.94 | 1.71 | 91 |
| Yellowstone | 11 Nov 2025 | 2.50 | 91 | 0.03 | 1.65 | 2.22 | 2.75 | 3.51 | 4.67 | 6.88 | 1.46 | 53 |