About this river
Lewis River is a 7.7 mile river near Cascade Paddle Boards in Oregon. Streamflow is measured at the USGS gauge Lewis River at Ariel, WA (site 14220500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1909 to 2026
Lewis River typically runs highest in January, at a median 7,510 cfs, and lowest in August, at 1,230 cfs. The highest flow on record for any single day is 114,000 cfs, in 1934.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 7,510 | 4,460 to 9,810 | |
| February | 6,350 | 3,890 to 8,900 | |
| March | 5,680 | 3,560 to 8,100 | |
| April | 5,005 | 3,130 to 6,670 | |
| May | 4,440 | 2,880 to 6,390 | |
| June | 2,890 | 2,300 to 4,755 | |
| July | 1,750 | 1,250 to 2,120 | |
| August | 1,230 | 956 to 1,500 | |
| September | 1,375 | 1,065 to 2,415 | |
| October | 2,640 | 1,690 to 3,520 | |
| November | 5,305 | 3,700 to 7,735 | |
| December | 7,100 | 4,250 to 9,580 |
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 103 years of record. Statistics published by the US Geological Survey for Lewis River at Ariel, WA (site 14220500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
6 mapped launches sit in the mapped area of Lewis River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Pekin FerryLewis RiverPublic
- Paradise Point State ParkNorth Fork Lewis RiverPublic
- Horseshoe Lake ParkHorseshoe LakePublic
- Cedar CreekLewis RiverPublic
- IslandLewis RiverPublic
- MerwinNorth Fork Lewis RiverPublic
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Lewis River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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