Grande Ronde River at Troy
Critical Stages
8' - Action
10' - Flood
11' - Moderate
12' - Major
Latest Observation
Updated: 5:00 AM PST 12/17/25
Status: No Flooding
Stage: 4.51 ft
Flow: 2.29 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 10 AM 12/17 | 4.79 | 2.74 |
| 4 PM 12/17 | 5.07 | 3.24 |
| 10 PM 12/17 | 5.16 | 3.41 |
| 4 AM 12/18 | 5.1 | 3.29 |
| 10 AM 12/18 | 4.95 | 3.02 |
| 4 PM 12/18 | 4.88 | 2.9 |
| 10 PM 12/18 | 5.1 | 3.29 |
| 4 AM 12/19 | 5.65 | 4.41 |
| 10 AM 12/19 | 6.3 | 5.94 |
| 4 PM 12/19 | 6.84 | 7.39 |
| 10 PM 12/19 | 7.11 | 8.18 |
| 4 AM 12/20 | 7.12 | 8.21 |
| 10 AM 12/20 | 6.89 | 7.54 |
| 4 PM 12/20 | 6.54 | 6.56 |
| 10 PM 12/20 | 6.16 | 5.59 |
| 4 AM 12/21 | 5.82 | 4.78 |
| 10 AM 12/21 | 5.54 | 4.17 |
| 4 PM 12/21 | 5.35 | 3.78 |
| 10 PM 12/21 | 5.24 | 3.56 |
| 4 AM 12/22 | 5.21 | 3.5 |
| 10 AM 12/22 | 5.26 | 3.6 |
| 4 PM 12/22 | 5.35 | 3.78 |
| 10 PM 12/22 | 5.43 | 3.94 |
| 4 AM 12/23 | 5.46 | 4 |
| 10 AM 12/23 | 5.44 | 3.96 |
| 4 PM 12/23 | 5.37 | 3.82 |
| 10 PM 12/23 | 5.29 | 3.66 |
| 4 AM 12/24 | 5.21 | 3.5 |
| 10 AM 12/24 | 5.16 | 3.41 |
| 4 PM 12/24 | 5.16 | 3.41 |
| 10 PM 12/24 | 5.24 | 3.56 |
| 4 AM 12/25 | 5.37 | 3.82 |
| 10 AM 12/25 | 5.47 | 4.02 |
| 4 PM 12/25 | 5.51 | 4.11 |
| 10 PM 12/25 | 5.5 | 4.09 |
| 4 AM 12/26 | 5.46 | 4 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5:00 AM 12/17 | 4.51 | 2.29 |
| 4:45 AM 12/17 | 4.54 | 2.34 |
| 4:30 AM 12/17 | 4.53 | 2.32 |
| 4:15 AM 12/17 | 4.53 | 2.32 |
| 4:00 AM 12/17 | 4.53 | 2.32 |
| 3:45 AM 12/17 | 4.53 | 2.32 |
| 3:30 AM 12/17 | 4.52 | 2.3 |
| 3:15 AM 12/17 | 4.53 | 2.32 |
| 3:00 AM 12/17 | 4.52 | 2.3 |
| 2:45 AM 12/17 | 4.53 | 2.32 |
| 2:30 AM 12/17 | 4.52 | 2.3 |
| 2:15 AM 12/17 | 4.49 | 2.26 |
| 2:00 AM 12/17 | 4.49 | 2.26 |
| 1:45 AM 12/17 | 4.52 | 2.3 |
| 1:30 AM 12/17 | 4.51 | 2.29 |
| 1:15 AM 12/17 | 4.49 | 2.26 |
| 1:00 AM 12/17 | 4.52 | 2.3 |
| 12:45 AM 12/17 | 4.52 | 2.3 |
| 12:30 AM 12/17 | 4.49 | 2.26 |
| 12:15 AM 12/17 | 4.52 | 2.3 |
| 12:00 AM 12/17 | 4.53 | 2.32 |
| 11:45 PM 12/16 | 4.53 | 2.32 |
| 11:30 PM 12/16 | 4.51 | 2.29 |
| 11:15 PM 12/16 | 4.5 | 2.27 |
| 11:00 PM 12/16 | 4.51 | 2.29 |
| 10:45 PM 12/16 | 4.52 | 2.3 |
| 10:30 PM 12/16 | 4.51 | 2.29 |
| 10:15 PM 12/16 | 4.49 | 2.26 |
| 10:00 PM 12/16 | 4.5 | 2.27 |
| 9:45 PM 12/16 | 4.52 | 2.3 |
16' -
Flooding along the left bank into the town of Troy.
11' -
Extensive flooding of fields around Troy are possible, but no residences are threatened.
10' -
Minor flooding of fields adjacent to the river from Elgin through Troy and downstream to the confluence of the Snake River.
9' -
Minor flooding in lowland fields from Elgin downstream through Troy and through southeast Washington to the Snake River.
| Date | Stage (ft) |
|---|---|
| Feb 9, 1996 | 13.76 |
| Jan 1, 1997 | 12.65 |
| Mar 10, 2014 | 11.85 |
| Feb 7, 2020 | 11.73 |
| Mar 19, 0017 | 11.7 |
| Dec 23, 1964 | 11.25 |
| Jun 5, 2010 | 10.83 |
| Apr 14, 2002 | 10.44 |
| Dec 22, 1955 | 10.43 |
| Feb 2, 1995 | 10.36 |
| Jan 29, 1965 | 10.34 |
| Jan 17, 2011 | 10.3 |
| Dec 15, 1946 | 10.2 |
| Feb 23, 1986 | 9.93 |
| May 27, 1948 | 9.6 |
| May 26, 1998 | 9.51 |
| Feb 21, 1982 | 9.3 |
| May 19, 1991 | 9.1 |
| Jan 17, 1974 | 9 |
| Mar 18, 1972 | 8.48 |
Data provided by the National Weather Service.
