About this river
South Yamhill River is a 2.4 mile river near Alder Creek Kayak & Canoe in Oregon. Streamflow is measured at the USGS gauge South Yamhill River at Mcminnville, OR (site 14194150). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1995 to 2026
South Yamhill River typically runs highest in January, at a median 3,100 cfs, and lowest in September, at 34 cfs. The highest flow on record for any single day is 40,300 cfs, in 1996.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 3,100 | 1,760 to 6,150 | |
| February | 2,330 | 1,210 to 4,060 | |
| March | 2,300 | 1,340 to 3,890 | |
| April | 1,415 | 905 to 2,230 | |
| May | 615 | 334 to 921 | |
| June | 278 | 166 to 415 | |
| July | 77 | 54 to 114 | |
| August | 35 | 20 to 48 | |
| September | 34 | 24 to 51 | |
| October | 111 | 54 to 247 | |
| November | 1,130 | 515 to 2,415 | |
| December | 2,770 | 1,320 to 6,220 |
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 31 years of record. Statistics published by the US Geological Survey for South Yamhill River at Mcminnville, OR (site 14194150). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show South Yamhill 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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