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Grande Ronde River in Washington

River62.1 mi
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Around here

Around Grande Ronde River

Moss Springs Campground12.8 mi20 mi

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
Typical flow by month at Grande Ronde River at Troy, OR, in cfs
MonthTypical (cfs)Usual range (cfs)
January1,490985 to 2,420
February2,1601,320 to 3,510
March3,7802,390 to 5,730
April5,8504,095 to 8,010
May6,7504,980 to 9,110
June5,1253,995 to 6,765
July1,660968 to 2,370
August708570 to 910
September687560 to 824
October782656 to 922
November971803 to 1,210
December1,180874 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

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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.

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