Rivers in Oregon
Grande Ronde River at Troy
Below flood stage
3.95ftStage
Observed Tue, Sep 22, 12:00 AM PDT
- Flood stage
- 10.00 ft
- Forecast crest
- 3.97 ftTue, Sep 22, 5:00 AM PDT
- Record crest
- 13.76 ft1996
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 12.00 ft |
| Moderate flood | 11.00 ft |
| Minor flood | 10.00 ft |
| Action | 8.00 ft |
- 16.00 ftFlooding along the left bank into the town of Troy.
- 11.00 ftExtensive flooding of fields around Troy are possible, but no residences are threatened.
- 10.00 ftMinor flooding of fields adjacent to the river from Elgin through Troy and downstream to the confluence of the Snake River.
- 9.00 ftMinor flooding in lowland fields from Elgin downstream through Troy and through southeast Washington to the Snake River.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 21, 2026.
Crest history
20 crests on NOAA’s list since 17.
| # | Date | Stage |
|---|---|---|
| 1 | February 9, 1996 | 13.76 ft |
| 2 | January 1, 1997 | 12.65 ft |
| 3 | March 10, 2014 | 11.85 ft |
| 4 | February 7, 2020 | 11.73 ft |
| 5 | March 19, 17 | 11.70 ft |
| 6 | December 23, 1964 | 11.25 ft |
| 7 | June 5, 2010 | 10.83 ft |
| 8 | April 14, 2002 | 10.44 ft |
| 9 | December 22, 1955 | 10.43 ft |
| 10 | February 2, 1995 | 10.36 ft |
| 11 | January 29, 1965 | 10.34 ft |
| 12 | January 17, 2011 | 10.30 ft |
| 13 | December 15, 1946 | 10.20 ft |
| 14 | February 23, 1986 | 9.93 ft |
| 15 | May 27, 1948 | 9.60 ft |
| 16 | May 26, 1998 | 9.51 ft |
| 17 | February 21, 1982 | 9.30 ft |
| 18 | May 19, 1991 | 9.10 ft |
| 19 | January 17, 1974 | 9.00 ft |
| 20 | March 18, 1972 | 8.48 ft |
Most recent crests
- February 7, 2020: 11.73 ft
- March 10, 2014: 11.85 ft
- January 17, 2011: 10.30 ft
- June 5, 2010: 10.83 ft
- April 14, 2002: 10.44 ft
- May 26, 1998: 9.51 ft
- January 1, 1997: 12.65 ft
- February 9, 1996: 13.76 ft
- February 2, 1995: 10.36 ft
- May 19, 1991: 9.10 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.