Coast Fork Willamette River in Oregon
Around here
Around Coast Fork Willamette River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
Coast Fork Willamette River is a 39.4 mile river. Streamflow is measured at the USGS gauge Coast Fork Willamette R below Cottage Grove Dam, OR (site 14153500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
Coast Fork Willamette River typically runs highest in January, at a median 346 cfs, and lowest in July, at 52 cfs. The highest flow on record for any single day is 5,220 cfs, in 1965.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 346 | 181 to 694 |
| February | 209 | 84 to 475 |
| March | 188 | 81 to 472 |
| April | 102 | 76 to 279 |
| May | 82 | 70 to 150 |
| June | 76 | 63 to 91 |
| July | 52 | 49 to 57 |
| August | 54 | 49 to 80 |
| September | 159 | 66 to 261 |
| October | 227 | 89 to 283 |
| November | 125 | 59 to 292 |
| December | 317 | 132 to 668 |
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 87 years of record. Statistics published by the US Geological Survey for Coast Fork Willamette R below Cottage Grove Dam, OR (site 14153500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
2 mapped launches sit in the mapped area of Coast Fork Willamette River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Coast Fork Willamette 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.
