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 | 08 Oct 2026 | 3rd Highest | 2nd Highest | Highest |
|---|---|---|---|---|---|---|---|
| Belle Fourche | 1997 0.00 |
1998 0.00 |
2000 0.00 |
0.03 (Rank: 25/31) |
2010 1.17 |
1999 3.30 |
2014 3.60 |
| Bighorn | 1988 0.00 |
1989 0.00 |
2004 0.00 |
0.08 (Rank: 13/47) |
2010 1.56 |
2014 2.21 |
1986 2.49 |
| Cheyenne | 1997 0.00 |
1998 0.00 |
2000 0.00 |
0.05 (Rank: 28/31) |
2010 1.00 |
1999 3.30 |
2014 3.60 |
| Laramie | 1985 0.00 |
1988 0.00 |
1989 0.00 |
0.16 (Rank: 32/45) |
1987 0.88 |
1991 1.05 |
1986 1.43 |
| Little Snake | 1988 0.00 |
1989 0.00 |
1990 0.00 |
0.09 (Rank: 29/42) |
1986 0.66 |
1995 0.72 |
1987 1.55 |
| Lower Green | 1988 0.00 |
1989 0.00 |
1990 0.00 |
0.00 (Rank: 24/42) |
1995 0.66 |
1987 0.96 |
2012 1.01 |
| Lower North Platte | 1984 0.00 |
1985 0.00 |
1988 0.00 |
0.17 (Rank: 32/45) |
1996 0.85 |
1999 0.93 |
2014 2.38 |
| Madison | 1981 0.00 |
1985 0.00 |
1988 0.00 |
0.16 (Rank: 32/56) |
2018 1.18 |
2008 1.41 |
2014 1.67 |
| Powder | 1982 0.00 |
1985 0.00 |
1988 0.00 |
0.09 (Rank: 24/47) |
2010 1.57 |
1986 1.68 |
2014 2.40 |
| Shoshone | 1989 0.00 |
2004 0.00 |
2005 0.00 |
0.02 (Rank: 15/46) |
1987 1.82 |
1986 2.04 |
1983 2.06 |
| Snake | 1981 0.00 |
1988 0.00 |
1989 0.00 |
0.00 (Rank: 16/47) |
2010 0.80 |
1983 0.95 |
1986 0.96 |
| South Platte | 2004 0.00 |
2005 0.00 |
2006 0.00 |
1.00 (Rank: 24/24) |
2026 0.00 |
2013 0.20 |
2027 1.00 |
| Sweetwater | 2000 0.00 |
2001 0.00 |
2002 0.00 |
0.07 (Rank: 20/29) |
2006 0.75 |
2014 1.10 |
2010 1.50 |
| Tongue | 1988 0.00 |
1989 0.00 |
1997 0.00 |
0.03 (Rank: 14/45) |
2012 1.90 |
2014 2.07 |
1986 2.33 |
| Upper Bear | 1981 0.00 |
1984 0.00 |
1988 0.00 |
0.00 (Rank: 24/47) |
1986 0.67 |
1983 1.09 |
1987 1.46 |
| Upper Green | 1981 0.00 |
1988 0.00 |
1989 0.00 |
0.00 (Rank: 20/46) |
1987 0.75 |
2010 0.98 |
1983 1.12 |
| Upper North Platte | 1988 0.00 |
1989 0.00 |
1990 0.00 |
0.34 (Rank: 33/45) |
1999 1.16 |
1986 1.26 |
1987 1.88 |
| Wind | 1981 0.00 |
1988 0.00 |
1989 0.00 |
0.14 (Rank: 27/47) |
1983 1.52 |
2010 1.61 |
2014 1.62 |
| Yellowstone in WY | 1981 0.00 |
1989 0.00 |
2004 0.00 |
0.03 (Rank: 17/47) |
2008 1.62 |
2018 1.98 |
1986 2.03 |