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Around Grande Ronde River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Grande Ronde River is a 62.1 mile river. Streamflow is measured at the USGS gauge Grande Ronde River at Troy, OR (site 13333000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1945 to 2026
Grande Ronde River typically runs highest in May, at a median 6,750 cfs, and lowest in September, at 687 cfs. The highest flow on record for any single day is 42,200 cfs, in 1996.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 1,490 | 985 to 2,420 |
| February | 2,160 | 1,320 to 3,510 |
| March | 3,780 | 2,390 to 5,730 |
| April | 5,850 | 4,095 to 8,010 |
| May | 6,750 | 4,980 to 9,110 |
| June | 5,125 | 3,995 to 6,765 |
| July | 1,660 | 968 to 2,370 |
| August | 708 | 570 to 910 |
| September | 687 | 560 to 824 |
| October | 782 | 656 to 922 |
| November | 971 | 803 to 1,210 |
| December | 1,180 | 874 to 1,840 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 82 years of record. Statistics published by the US Geological Survey for Grande Ronde River at Troy, OR (site 13333000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Grande Ronde River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Wallowa Lake County Park (North)Wallowa River - Wallowa LakePublic
- Minam State Recreation AreaMinam RiverPublic
- Wildcat CreekGrande Ronde RiverPublic
- Mud CreekGrande Ronde RiverPublic
- Troy Access #1Grande Ronde RiverPublic
- Troy Access #2Grande Ronde RiverPublic
- BottsGrande Ronde RiverPublic
- CottonwoodGrande Ronde RiverPublic
Made to print
Put Grande Ronde River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Grande Ronde River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.






