Major Flood
12 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
11 ft
Minor Flood
10 ft
Action Stage
8 ft
What Floods at Each Level
16 ft
Flooding along the left bank into the town of Troy.
11 ft
Extensive flooding of fields around Troy are possible, but no residences are threatened.
10 ft
Minor flooding of fields adjacent to the river from Elgin through Troy and downstream to the confluence of the Snake River.
9 ft
Minor flooding in lowland fields from Elgin downstream through Troy and through southeast Washington to the Snake River.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Feb 8, 1996 | 13.76 ft | 51,800 cfs |
| Dec 31, 1996 | 12.65 ft | 36,700 cfs |
| Mar 10, 2014 | 11.85 ft | — |
About This Gauge
USGS Site
NWS LID
TRYO3
River
Grande Ronde River
County
Wallowa, OR
Coordinates
45.9457°N, 117.4510°W
Get Flood Alerts for Grande Ronde River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Grande Ronde River at Troy?
The Grande Ronde River at Troy gauge is maintained by USGS (site 13333000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Grande Ronde River at Troy?
The NWS-defined flood stage for Grande Ronde River at Troy is 10 feet. Action stage begins at 8 feet. Moderate flooding starts at 11 feet, and major flooding at 12 feet.
How do I get alerts when Grande Ronde River rises?
Download StormCast free on Google Play, go to River Gauges, and add Grande Ronde River at Troy to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Grande Ronde River at Troy gauge located?
The gauge is located in Wallowa County, Oregon at coordinates 45.9457°N, 117.4510°W. USGS site number: 13333000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Grande Ronde River
On This River
Upstream: Grande Ronde River near Perry
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey