Lemhi River near Lemhi
Critical Stages
6' - Action
6.5' - Flood
8.5' - Moderate
10' - Major
Latest Observation
Updated: 5:00 AM MST 12/16/25
Status: No Flooding
Stage: 3.97 ft
Flow: 0.208 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11 AM 12/16 | 3.91 | 0.192 |
| 5 PM 12/16 | 3.9 | 0.189 |
| 11 PM 12/16 | 3.9 | 0.189 |
| 5 AM 12/17 | 3.89 | 0.186 |
| 11 AM 12/17 | 3.89 | 0.186 |
| 5 PM 12/17 | 3.89 | 0.186 |
| 11 PM 12/17 | 3.89 | 0.186 |
| 5 AM 12/18 | 3.89 | 0.186 |
| 11 AM 12/18 | 3.89 | 0.186 |
| 5 PM 12/18 | 3.88 | 0.184 |
| 11 PM 12/18 | 3.88 | 0.184 |
| 5 AM 12/19 | 3.88 | 0.184 |
| 11 AM 12/19 | 3.88 | 0.184 |
| 5 PM 12/19 | 3.87 | 0.181 |
| 11 PM 12/19 | 3.87 | 0.181 |
| 5 AM 12/20 | 3.86 | 0.179 |
| 11 AM 12/20 | 3.86 | 0.179 |
| 5 PM 12/20 | 3.86 | 0.179 |
| 11 PM 12/20 | 3.85 | 0.176 |
| 5 AM 12/21 | 3.85 | 0.176 |
| 11 AM 12/21 | 3.85 | 0.176 |
| 5 PM 12/21 | 3.85 | 0.176 |
| 11 PM 12/21 | 3.85 | 0.176 |
| 5 AM 12/22 | 3.85 | 0.176 |
| 11 AM 12/22 | 3.85 | 0.176 |
| 5 PM 12/22 | 3.85 | 0.176 |
| 11 PM 12/22 | 3.85 | 0.176 |
| 5 AM 12/23 | 3.85 | 0.176 |
| 11 AM 12/23 | 3.85 | 0.176 |
| 5 PM 12/23 | 3.85 | 0.176 |
| 11 PM 12/23 | 3.85 | 0.176 |
| 5 AM 12/24 | 3.85 | 0.176 |
| 11 AM 12/24 | 3.85 | 0.176 |
| 5 PM 12/24 | 3.85 | 0.176 |
| 11 PM 12/24 | 3.85 | 0.176 |
| 5 AM 12/25 | 3.85 | 0.176 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5:00 AM 12/16 | 3.97 | 0.208 |
| 4:45 AM 12/16 | 3.96 | 0.205 |
| 4:30 AM 12/16 | 3.96 | 0.205 |
| 4:15 AM 12/16 | 3.96 | 0.205 |
| 4:00 AM 12/16 | 3.96 | 0.205 |
| 3:45 AM 12/16 | 3.95 | 0.202 |
| 3:30 AM 12/16 | 3.95 | 0.202 |
| 3:15 AM 12/16 | 3.95 | 0.202 |
| 3:00 AM 12/16 | 3.95 | 0.202 |
| 2:45 AM 12/16 | 3.94 | 0.2 |
| 2:30 AM 12/16 | 3.94 | 0.2 |
| 2:15 AM 12/16 | 3.94 | 0.2 |
| 2:00 AM 12/16 | 3.94 | 0.2 |
| 1:45 AM 12/16 | 3.94 | 0.2 |
| 1:30 AM 12/16 | 3.94 | 0.2 |
| 1:15 AM 12/16 | 3.94 | 0.2 |
| 1:00 AM 12/16 | 3.94 | 0.2 |
| 12:45 AM 12/16 | 3.94 | 0.2 |
| 12:30 AM 12/16 | 3.94 | 0.2 |
| 12:15 AM 12/16 | 3.94 | 0.2 |
| 12:00 AM 12/16 | 3.93 | 0.197 |
| 11:45 PM 12/15 | 3.94 | 0.2 |
| 11:30 PM 12/15 | 3.93 | 0.197 |
| 11:15 PM 12/15 | 3.94 | 0.2 |
| 11:00 PM 12/15 | 3.94 | 0.2 |
| 10:45 PM 12/15 | 3.94 | 0.2 |
| 10:30 PM 12/15 | 3.94 | 0.2 |
| 10:15 PM 12/15 | 3.94 | 0.2 |
| 10:00 PM 12/15 | 3.94 | 0.2 |
| 9:45 PM 12/15 | 3.94 | 0.2 |
10' -
Mainy bridges along Highway 28 will be overtopped and flooded from Lemhi to Tendoy.
8.5' -
Possible damage to irrigation diversion headgates and ditches.
7' -
Expect possible flooding to Highway 28 from Tendoy to Salmon.
6.5' -
Expect flooding to ranchland adjacent to the river from Tendoy to Salmon.
| Date | Stage (ft) |
|---|---|
| Jun 21, 1984 | 7.19 |
| Jul 6, 1975 | 6.72 |
| Jun 5, 2017 | 6.7 |
| Jun 24, 2011 | 6.67 |
| Jun 24, 1982 | 6.62 |
| Jun 2, 1986 | 6.22 |
| Jun 22, 2009 | 6.13 |
| Jun 13, 2022 | 6.12 |
| Jun 5, 1995 | 6.06 |
| Jun 27, 1971 | 6.01 |
| Jun 17, 1999 | 5.83 |
| Jun 1, 2018 | 5.81 |
| Jun 10, 1996 | 5.76 |
| Jun 17, 2010 | 5.63 |
| Jun 2, 2025 | 4.76 |
Data provided by the National Weather Service.
