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 Nov 2025 | 0.20 | 18 | 0.10 | 0.19 | 0.75 | 1.13 | 1.36 | 2.61 | 3.60 | 0.17 | 15 |
| Bighorn | 25 Nov 2025 | 1.25 | 45 | 0.99 | 1.93 | 2.33 | 2.80 | 3.09 | 4.10 | 4.96 | 2.15 | 77 |
| Cheyenne | 25 Nov 2025 | 0.25 | 19 | 0.15 | 0.24 | 0.80 | 1.30 | 1.63 | 2.96 | 3.60 | 0.25 | 19 |
| Laramie | 25 Nov 2025 | 0.44 | 14 | 1.00 | 1.72 | 2.29 | 3.10 | 3.66 | 4.79 | 8.75 | 2.10 | 68 |
| Little Snake | 25 Nov 2025 | 1.06 | 34 | 1.12 | 1.75 | 2.44 | 3.10 | 3.64 | 5.02 | 6.90 | 2.36 | 76 |
| Lower Green | 25 Nov 2025 | 1.27 | 60 | 0.64 | 1.24 | 1.87 | 2.13 | 2.55 | 3.42 | 4.99 | 2.12 | 100 |
| Lower North Platte | 25 Nov 2025 | 0.20 | 9 | 0.28 | 0.97 | 1.52 | 2.12 | 2.73 | 3.96 | 5.67 | 1.93 | 91 |
| Madison | 25 Nov 2025 | 0.88 | 25 | 1.12 | 2.03 | 2.95 | 3.48 | 4.75 | 6.31 | 9.43 | 3.48 | 100 |
| Powder | 25 Nov 2025 | 0.90 | 43 | 0.80 | 1.41 | 1.86 | 2.09 | 2.45 | 3.45 | 4.82 | 1.41 | 67 |
| Shoshone | 25 Nov 2025 | 2.07 | 51 | 0.95 | 2.51 | 3.31 | 4.07 | 5.08 | 6.31 | 8.13 | 2.23 | 55 |
| Snake | 25 Nov 2025 | 1.91 | 50 | 0.76 | 2.17 | 3.13 | 3.85 | 4.59 | 6.18 | 7.97 | 2.57 | 67 |
| South Platte | 25 Nov 2025 | 0.10 | 8 | 0.00 | 0.00 | 0.50 | 1.20 | 1.68 | 2.75 | 3.50 | 0.40 | 33 |
| Sweetwater | 25 Nov 2025 | 1.63 | 60 | 0.73 | 1.48 | 2.34 | 2.70 | 3.14 | 4.11 | 6.25 | 2.23 | 83 |
| Tongue | 25 Nov 2025 | 0.54 | 21 | 0.72 | 1.71 | 2.34 | 2.54 | 3.24 | 4.37 | 4.50 | 2.21 | 87 |
| Upper Bear | 25 Nov 2025 | 0.98 | 40 | 0.71 | 1.49 | 2.08 | 2.47 | 3.51 | 4.46 | 6.94 | 1.95 | 79 |
| Upper Green | 25 Nov 2025 | 1.60 | 55 | 0.55 | 1.64 | 2.45 | 2.91 | 3.45 | 4.89 | 7.86 | 1.89 | 65 |
| Upper North Platte | 25 Nov 2025 | 1.27 | 29 | 1.61 | 2.66 | 3.64 | 4.39 | 5.23 | 7.00 | 10.73 | 3.08 | 70 |
| Wind | 25 Nov 2025 | 1.57 | 53 | 0.72 | 2.12 | 2.79 | 2.97 | 3.70 | 4.68 | 6.80 | 2.32 | 78 |
| Yellowstone | 25 Nov 2025 | 2.87 | 63 | 0.99 | 2.92 | 3.79 | 4.58 | 5.46 | 6.55 | 9.27 | 2.83 | 62 |