Yamhill River

{{Short description|River in Oregon, United States}}

{{Infobox river

| name = Yamhill River

| name_native =

| name_native_lang =

| name_other =

| name_etymology = Uncertain but probably after a local Kalapuya tribe{{cite book | last = McArthur | first = Lewis A. |author2=McArthur, Lewis L. | title = Oregon Geographic Names, Seventh Edition | publisher = Oregon Historical Society Press | year = 2003 | location = Portland, Oregon | page = 1063 | isbn = 0-87595-277-1}}

| image = Yamhill river at Dayton.jpg

| image_size = 300

| image_caption = Yamhill River at Dayton

| map =

| map_size = 300

| map_caption =

| pushpin_map = USA Oregon

| pushpin_map_size = 300

| pushpin_map_caption= Location of the mouth of the Yamhill River in Oregon

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Oregon

| subdivision_type3 =

| subdivision_name3 =

| subdivision_type4 = County

| subdivision_name4 = Yamhill

| subdivision_type5 =

| subdivision_name5 =

| length = {{convert|11|mi|km|abbr=on}}{{cite web | author = United States Geological Survey |title = United States Geological Survey Topographic Map: McMinnville, Dayton, and Saint Paul quads | publisher = TopoQuest | url = http://www.topoquest.com/map.php?lat=45.225833&lon=-123.145&datum=nad83&zoom=4|access-date = February 10, 2009}} The maps include river mile (RM) markers from the mouth to the source, just beyond RM 11.

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| source1 = confluence of South Yamhill River and North Yamhill River

| source1_location = between McMinnville and Dayton, Yamhill County, Oregon

| source1_coordinates= {{coord|45|13|33|N|123|08|42|W|display=inline}}

| source1_elevation = {{convert|152|ft|abbr=on}}Source elevation derived from Google Earth search using GNIS source coordinates.

| mouth = Willamette River

| mouth_location = Yamhill County, Oregon

| mouth_coordinates = {{coord|45|13|47|N|122|59|52|W|display=inline,title}}{{cite web | work = Geographic Names Information System| publisher = United States Geological Survey | date = November 28, 1980 | url = http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1163366| title = Yamhill River | access-date = February 10, 2009}}

| mouth_elevation = {{convert|59|ft|abbr=on}}

| progression =

| river_system =

| basin_size = {{convert|837|sqmi|abbr=on}}{{cite web | title = Map 1: The Yamhill River Basin & the Chehalem Valley | publisher = Yamhill Basin Council | year = 2002 | url = http://www.co.yamhill.or.us/ybc/Assessments/USYamhill/USYmap1.pdf | format = pdf | access-date = February 11, 2009}}

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The Yamhill River is an {{convert|11|mi|km|adj=on}} tributary of the Willamette River, in the U.S. state of Oregon. Formed by the confluence of the South Yamhill River and the North Yamhill River about {{convert|3|mi|km|0}} east of McMinnville, it drains part of the Northern Oregon Coast Range. The river meanders east past Dayton to join the Willamette River at its river mile (RM) 55 or river kilometer (RK) 89, south of Newberg.{{cite map |publisher = DeLorme Mapping |title = Oregon Atlas & Gazetteer |edition = 1991 |section = 59–60|isbn = 0-89933-235-8}}

It is likely that Yamhill was the 19th century white settlers' name for a tribe of Native Americans, a Kalapuya people who inhabited the region. The Yamhill people were among 27 bands and tribes moved to the Grand Ronde Indian Reservation, formally established in 1857.{{cite web | title = Fort Yamhill State Heritage Area |publisher = Oregon Parks and Recreation Department |url = http://www.oregonstateparks.org/images/pdf/fort_yamhill.pdf |format = PDF| access-date = February 10, 2009}}