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 | 24 Oct 2026 | 0.00 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.57 | 2.67 | 0.00 | 0 |
| Bighorn | 24 Oct 2026 | 0.95 | 92 | 0.00 | 0.22 | 0.68 | 1.03 | 1.51 | 1.96 | 3.39 | 0.22 | 21 |
| Cheyenne | 24 Oct 2026 | 0.00 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.66 | 2.95 | 0.00 | 0 |
| Laramie | 24 Oct 2026 | 0.10 | 20 | 0.00 | 0.03 | 0.25 | 0.50 | 0.95 | 1.66 | 2.92 | 0.03 | 6 |
| Little Snake | 24 Oct 2026 | 0.06 | 19 | 0.00 | 0.00 | 0.12 | 0.31 | 0.70 | 1.38 | 2.01 | 0.00 | 0 |
| Lower Green | 24 Oct 2026 | 0.38 | 173 | 0.00 | 0.00 | 0.12 | 0.22 | 0.58 | 0.81 | 1.84 | 0.37 | 168 |
| Lower North Platte | 24 Oct 2026 | 0.10 | 40 | 0.00 | 0.00 | 0.09 | 0.25 | 0.86 | 1.92 | 3.50 | 0.03 | 12 |
| Madison | 24 Oct 2026 | 0.32 | 52 | 0.00 | 0.00 | 0.35 | 0.62 | 0.92 | 1.47 | 2.40 | 0.22 | 35 |
| Powder | 24 Oct 2026 | 0.77 | 154 | 0.00 | 0.00 | 0.36 | 0.50 | 0.97 | 1.69 | 3.10 | 0.01 | 2 |
| Shoshone | 24 Oct 2026 | 0.68 | 68 | 0.00 | 0.00 | 0.60 | 1.00 | 1.69 | 2.49 | 3.30 | 0.00 | 0 |
| Snake | 24 Oct 2026 | 0.34 | 56 | 0.00 | 0.02 | 0.27 | 0.61 | 0.87 | 1.70 | 2.72 | 0.06 | 10 |
| South Platte | 24 Oct 2026 | 0.00 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.60 | 0.80 | 0.00 | 0 |
| Sweetwater | 24 Oct 2026 | 0.30 | 50 | 0.00 | 0.00 | 0.16 | 0.60 | 1.02 | 1.57 | 3.60 | 0.00 | 0 |
| Tongue | 24 Oct 2026 | 0.20 | 26 | 0.00 | 0.15 | 0.50 | 0.76 | 1.34 | 2.34 | 3.00 | 0.06 | 8 |
| Upper Bear | 24 Oct 2026 | 0.07 | 47 | 0.00 | 0.00 | 0.06 | 0.15 | 0.59 | 1.15 | 2.58 | 0.11 | 73 |
| Upper Green | 24 Oct 2026 | 0.15 | 33 | 0.00 | 0.00 | 0.14 | 0.46 | 0.74 | 1.52 | 2.14 | 0.03 | 7 |
| Upper North Platte | 24 Oct 2026 | 0.26 | 31 | 0.00 | 0.11 | 0.37 | 0.84 | 1.54 | 2.37 | 3.08 | 0.20 | 24 |
| Wind | 24 Oct 2026 | 0.40 | 46 | 0.00 | 0.02 | 0.56 | 0.87 | 1.41 | 2.15 | 3.43 | 0.03 | 3 |
| Yellowstone | 24 Oct 2026 | 1.12 | 94 | 0.00 | 0.07 | 0.74 | 1.19 | 1.54 | 2.77 | 3.24 | 0.12 | 10 |