Water Resources Data System & State Climate Office
Water Resources Data System & State Climate Office
Water Resources Data System & State Climate Office



Values are in inches, current rank starts with1 being the lowest.
| Basin | Lowest | 2nd Lowest | 3rd Lowest | 04 Apr 2026 | 3rd Highest | 2nd Highest | Highest |
|---|---|---|---|---|---|---|---|
| Belle Fourche | 2012 0.00 |
2015 0.00 |
2026 0.07 |
0.07 (Rank: 3/30) |
2014 9.00 |
2023 9.07 |
1997 9.25 |
| Bighorn | 2026 6.11 |
2001 7.85 |
1981 7.89 |
6.11 (Rank: 1/46) |
1997 14.09 |
1986 14.28 |
2014 16.00 |
| Cheyenne | 2012 0.00 |
2015 0.00 |
2026 0.00 |
0.00 (Rank: 3/30) |
1997 9.25 |
2011 9.40 |
2014 9.50 |
| Laramie | 2026 4.81 |
2004 8.10 |
2012 8.77 |
4.81 (Rank: 1/44) |
1996 20.43 |
1997 21.57 |
1986 26.88 |
| Little Snake | 2026 7.03 |
2012 9.35 |
2015 9.85 |
7.03 (Rank: 1/41) |
2011 27.52 |
1997 27.68 |
2023 31.71 |
| Lower Green | 2026 5.80 |
2015 6.42 |
2004 8.29 |
5.80 (Rank: 1/41) |
1996 17.00 |
2023 17.46 |
1997 17.86 |
| Lower North Platte | 2026 1.77 |
2015 6.42 |
2004 7.08 |
1.77 (Rank: 1/44) |
1984 15.90 |
1997 17.80 |
1983 20.90 |
| Madison | 1977 11.00 |
2015 11.96 |
2026 12.00 |
12.00 (Rank: 3/55) |
1972 29.57 |
1997 35.88 |
1974 36.73 |
| Powder | 2026 3.13 |
2024 6.09 |
2015 6.63 |
3.13 (Rank: 1/46) |
1986 12.66 |
1997 12.80 |
2014 14.80 |
| Shoshone | 2001 11.38 |
2005 11.87 |
2026 11.87 |
11.87 (Rank: 3/45) |
1996 26.47 |
1986 27.86 |
1997 28.50 |
| Snake | 1992 11.54 |
2001 13.46 |
1981 14.24 |
14.24 (Rank: 4/46) |
1986 31.98 |
1997 33.23 |
1982 34.75 |
| South Platte | 2004 0.00 |
2017 0.00 |
2026 0.20 |
0.20 (Rank: 3/23) |
2011 9.10 |
2016 9.70 |
2010 11.40 |
| Sweetwater | 2015 7.20 |
2026 7.27 |
2013 8.53 |
7.27 (Rank: 2/28) |
2023 18.60 |
2005 20.55 |
2017 27.03 |
| Tongue | 2026 6.77 |
2024 7.61 |
2015 8.16 |
6.77 (Rank: 1/44) |
1984 15.43 |
1986 15.47 |
2014 15.53 |
| Upper Bear | 2026 8.10 |
2015 8.57 |
1992 9.75 |
8.10 (Rank: 1/46) |
1997 27.25 |
1982 29.69 |
1986 30.27 |
| Upper Green | 1992 9.94 |
2010 10.25 |
1981 10.43 |
10.47 (Rank: 4/45) |
1997 26.86 |
1986 27.72 |
1982 28.29 |
| Upper North Platte | 2026 9.81 |
2012 12.81 |
2015 14.95 |
9.81 (Rank: 1/44) |
1997 30.65 |
2011 32.65 |
1986 34.22 |
| Wind | 2001 8.54 |
2026 9.01 |
2015 9.29 |
9.01 (Rank: 2/46) |
1997 18.77 |
1986 20.57 |
2017 23.82 |
| Yellowstone | 2001 12.90 |
1987 14.10 |
2010 14.40 |
19.18 (Rank: 24/46) |
1996 30.50 |
2018 31.22 |
1997 33.36 |