Grande Ronde River at Troy
Critical Stages
8' - Action
10' - Flood
11' - Moderate
12' - Major
Latest Observation
Updated: 11:00 PM PST 12/17/25
Status: No Flooding
Stage: 4.67 ft
Flow: 2.54 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 AM 12/18 | 4.73 | 2.64 |
| 10 AM 12/18 | 4.62 | 2.46 |
| 4 PM 12/18 | 4.62 | 2.46 |
| 10 PM 12/18 | 4.93 | 2.99 |
| 4 AM 12/19 | 5.56 | 4.21 |
| 10 AM 12/19 | 6.25 | 5.81 |
| 4 PM 12/19 | 6.81 | 7.31 |
| 10 PM 12/19 | 7.05 | 8 |
| 4 AM 12/20 | 6.99 | 7.83 |
| 10 AM 12/20 | 6.7 | 7 |
| 4 PM 12/20 | 6.31 | 5.96 |
| 10 PM 12/20 | 5.92 | 5.01 |
| 4 AM 12/21 | 5.58 | 4.26 |
| 10 AM 12/21 | 5.32 | 3.72 |
| 4 PM 12/21 | 5.14 | 3.37 |
| 10 PM 12/21 | 5.03 | 3.17 |
| 4 AM 12/22 | 4.98 | 3.08 |
| 10 AM 12/22 | 4.96 | 3.04 |
| 4 PM 12/22 | 4.95 | 3.02 |
| 10 PM 12/22 | 4.92 | 2.97 |
| 4 AM 12/23 | 4.89 | 2.92 |
| 10 AM 12/23 | 4.84 | 2.83 |
| 4 PM 12/23 | 4.8 | 2.76 |
| 10 PM 12/23 | 4.75 | 2.67 |
| 4 AM 12/24 | 4.71 | 2.61 |
| 10 AM 12/24 | 4.69 | 2.58 |
| 4 PM 12/24 | 4.77 | 2.71 |
| 10 PM 12/24 | 4.94 | 3 |
| 4 AM 12/25 | 5.09 | 3.28 |
| 10 AM 12/25 | 5.15 | 3.39 |
| 4 PM 12/25 | 5.12 | 3.33 |
| 10 PM 12/25 | 5.03 | 3.17 |
| 4 AM 12/26 | 4.93 | 2.99 |
| 10 AM 12/26 | 4.83 | 2.81 |
| 4 PM 12/26 | 4.75 | 2.67 |
| 10 PM 12/26 | 4.69 | 2.58 |
| 4 AM 12/27 | 4.64 | 2.49 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11:00 PM 12/17 | 4.67 | 2.54 |
| 10:45 PM 12/17 | 4.67 | 2.54 |
| 10:30 PM 12/17 | 4.68 | 2.56 |
| 10:15 PM 12/17 | 4.64 | 2.49 |
| 10:00 PM 12/17 | 4.68 | 2.56 |
| 9:45 PM 12/17 | 4.66 | 2.53 |
| 9:30 PM 12/17 | 4.66 | 2.53 |
| 9:15 PM 12/17 | 4.65 | 2.51 |
| 9:00 PM 12/17 | 4.65 | 2.51 |
| 8:45 PM 12/17 | 4.65 | 2.51 |
| 8:30 PM 12/17 | 4.65 | 2.51 |
| 8:15 PM 12/17 | 4.64 | 2.49 |
| 8:00 PM 12/17 | 4.67 | 2.54 |
| 7:45 PM 12/17 | 4.64 | 2.49 |
| 7:30 PM 12/17 | 4.66 | 2.53 |
| 7:15 PM 12/17 | 4.65 | 2.51 |
| 7:00 PM 12/17 | 4.66 | 2.53 |
| 6:45 PM 12/17 | 4.66 | 2.53 |
| 6:30 PM 12/17 | 4.62 | 2.46 |
| 6:15 PM 12/17 | 4.65 | 2.51 |
| 6:00 PM 12/17 | 4.61 | 2.45 |
| 5:45 PM 12/17 | 4.64 | 2.49 |
| 5:30 PM 12/17 | 4.63 | 2.48 |
| 5:15 PM 12/17 | 4.62 | 2.46 |
| 5:00 PM 12/17 | 4.66 | 2.53 |
| 4:45 PM 12/17 | 4.64 | 2.49 |
| 4:30 PM 12/17 | 4.62 | 2.46 |
| 4:15 PM 12/17 | 4.62 | 2.46 |
| 4:00 PM 12/17 | 4.65 | 2.51 |
| 3:45 PM 12/17 | 4.63 | 2.48 |
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.
