| South Yamhill River | |
|---|---|
 Bridge over the river at Sheridan | |
  Location of the mouth of South Yamhill River in Oregon | |
| Etymology | Uncertain but probably after a local Kalapuya tribe[2] |
| Location | |
| Country | United States |
| State | Oregon |
| Counties | Polk and Yamhill |
| Physical characteristics | |
| Source | Northern Oregon Coast Range |
| • location | Siuslaw National Forest, in western Yamhill County, Oregon |
| • coordinates | 45°06′38″N 123°43′40″W / 45.11056°N 123.72778°W[1] |
| • elevation | 551 ft (168 m)[3] |
| Mouth | Yamhill River |
• location | between McMinnville and Dayton, Yamhill County, Oregon |
• coordinates | 45°13′33″N 123°08′41″W / 45.22583°N 123.14472°W[1] |
• elevation | 75 ft (23 m)[1] |
| Length | 60 mi (97 km)[4] |
| Basin size | 492 sq mi (1,270 km2)[5] |
| Discharge | |
| • location | McMinnville, Oregon, 5.6 miles (9.0 km) from mouth[6] |
| • average | 1,801 cu ft/s (51.0 m3/s)[6] |
| • minimum | 0.58 cu ft/s (0.016 m3/s) |
| • maximum | 47,100 cu ft/s (1,330 m3/s) |
The South Yamhill River is a tributary of the Yamhill River, approximately 60 miles (97 km) long, in northwest Oregon in the United States. It drains an area of the Northern Oregon Coast Range, as well as part of the Willamette Valley west of the Willamette River.[4][7]
- ^ a b c "South Yamhill River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 8, 2010.
- ^ McArthur, Lewis A.; McArthur, Lewis L. (2003). Oregon Geographic Names (Seventh ed.). Portland, Oregon: Oregon Historical Society Press. p. 1063. ISBN 0-87595-277-1.
- ^ Source elevation derived from Google Earth search using GNIS source coordinates.
- ^ a b Cite error: The named reference
topoquest multiple quadswas invoked but never defined (see the help page). - ^ "Map 1: The Yamhill River Basin & the Chehalem Valley" (PDF). Yamhill Basin Council. 2002. Archived from the original (pdf) on December 26, 2004. Retrieved January 22, 2009. The total is the sum of five subwatersheds: Upper Yamhill, Mill Creek, Salt Creek, Lower South Yamhill/Deer Creek, and Willamina Creek.
- ^ a b "Water-data report 2007: 14194150 South Yamhill River at McMinnville, OR" (pdf). United States Geological Survey. Retrieved January 22, 2009.
- ^ Cite error: The named reference
topomapwas invoked but never defined (see the help page).