About this river
Wynoochee River is a 4.0 mile river near High Life Charters in Washington. Streamflow is measured at the USGS gauge Wynoochee River above Black Creek near Montesano, WA (site 12037400). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1973 to 2026
Wynoochee River typically runs highest in January, at a median 1,970 cfs, and lowest in August, at 212 cfs. The highest flow on record for any single day is 23,700 cfs, in 1997.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,970 | 1,070 to 3,290 | |
| February | 1,430 | 919 to 2,460 | |
| March | 1,270 | 780 to 2,080 | |
| April | 816 | 624 to 1,200 | |
| May | 516 | 390 to 764 | |
| June | 395 | 305 to 615 | |
| July | 279 | 232 to 353 | |
| August | 212 | 179 to 252 | |
| September | 249 | 191 to 379 | |
| October | 402 | 229 to 831 | |
| November | 1,710 | 806 to 3,265 | |
| December | 1,960 | 1,100 to 3,330 |
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 53 years of record. Statistics published by the US Geological Survey for Wynoochee River above Black Creek near Montesano, WA (site 12037400). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Wynoochee River. Ramp data comes from the USGS national boat-ramp inventory.
- Black CreekWynoochee RiverPublic
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