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 | 22 Nov 2025 | 0.00 | 0 | 0.00 | 0.12 | 0.61 | 1.13 | 1.23 | 2.61 | 3.55 | 0.17 | 15 |
| Bighorn | 22 Nov 2025 | 1.16 | 45 | 0.88 | 1.80 | 2.17 | 2.59 | 2.94 | 3.97 | 4.69 | 2.12 | 82 |
| Cheyenne | 22 Nov 2025 | 0.00 | 0 | 0.00 | 0.08 | 0.80 | 1.25 | 1.41 | 3.01 | 3.55 | 0.15 | 12 |
| Laramie | 22 Nov 2025 | 0.46 | 16 | 0.68 | 1.61 | 2.01 | 2.93 | 3.51 | 4.33 | 7.58 | 2.03 | 69 |
| Little Snake | 22 Nov 2025 | 1.09 | 39 | 0.64 | 1.53 | 2.07 | 2.79 | 3.37 | 4.66 | 5.62 | 2.08 | 75 |
| Lower Green | 22 Nov 2025 | 1.17 | 62 | 0.51 | 0.95 | 1.43 | 1.90 | 2.36 | 3.21 | 4.33 | 1.88 | 99 |
| Lower North Platte | 22 Nov 2025 | 0.23 | 11 | 0.30 | 0.73 | 1.22 | 2.02 | 2.62 | 3.76 | 5.72 | 1.93 | 96 |
| Madison | 22 Nov 2025 | 0.96 | 30 | 0.74 | 1.68 | 2.40 | 3.20 | 4.30 | 4.97 | 8.57 | 2.92 | 91 |
| Powder | 22 Nov 2025 | 0.79 | 41 | 0.67 | 1.16 | 1.64 | 1.91 | 2.27 | 3.30 | 4.77 | 1.41 | 74 |
| Shoshone | 22 Nov 2025 | 1.87 | 51 | 0.78 | 2.15 | 3.01 | 3.70 | 4.71 | 5.90 | 8.03 | 2.02 | 55 |
| Snake | 22 Nov 2025 | 1.79 | 53 | 0.60 | 2.06 | 2.69 | 3.39 | 4.36 | 5.36 | 7.03 | 2.30 | 68 |
| South Platte | 22 Nov 2025 | 0.10 | 8 | 0.00 | 0.00 | 0.53 | 1.30 | 1.30 | 2.34 | 3.00 | 0.60 | 46 |
| Sweetwater | 22 Nov 2025 | 1.67 | 69 | 0.60 | 1.14 | 1.92 | 2.43 | 2.97 | 3.88 | 6.20 | 2.17 | 89 |
| Tongue | 22 Nov 2025 | 0.40 | 17 | 0.62 | 1.56 | 2.21 | 2.36 | 3.00 | 4.29 | 4.40 | 2.19 | 93 |
| Upper Bear | 22 Nov 2025 | 0.94 | 42 | 0.64 | 1.09 | 1.74 | 2.25 | 3.11 | 4.17 | 5.96 | 1.73 | 77 |
| Upper Green | 22 Nov 2025 | 1.60 | 62 | 0.47 | 1.57 | 2.17 | 2.60 | 3.33 | 4.59 | 6.67 | 1.73 | 67 |
| Upper North Platte | 22 Nov 2025 | 1.27 | 31 | 1.14 | 2.41 | 3.41 | 4.09 | 4.86 | 6.10 | 9.19 | 2.88 | 70 |
| Wind | 22 Nov 2025 | 1.58 | 58 | 0.56 | 1.92 | 2.53 | 2.73 | 3.52 | 4.14 | 6.71 | 2.28 | 84 |
| Yellowstone | 22 Nov 2025 | 2.62 | 64 | 0.87 | 2.60 | 3.46 | 4.09 | 5.11 | 6.14 | 9.45 | 2.40 | 59 |