Middle Santiam River

{{Short description|Tributary of the South Santiam River in America}}

{{Use American English|date=February 2025}}

{{Infobox river

| name = Middle Santiam River

| name_native =

| name_native_lang =

| name_other =

| name_etymology = Kalapuya tribe that lived near the river until removal to the Grande Ronde Reservation{{cite book | last = McArthur | first = Lewis A. |author2=McArthur, Lewis L. | title = Oregon Geographic Names |edition = Seventh | publisher = Oregon Historical Society Press | year = 2003 | location = Portland, Oregon | page = 848 | isbn = 0-87595-277-1}}

| image = Sunnyside County Park, Middle Santiam River - DPLA - c45ad8266868236ad5a8e27c506e13db.jpg

| image_caption = Sunnyside County Park on the Middle Santiam River.

| map =

| map_size = 300

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| pushpin_map = USA Oregon

| pushpin_map_size = 300

| pushpin_map_caption = Location of the mouth of the Middle Santiam River in Oregon

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Oregon

| subdivision_type3 =

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| subdivision_type4 = County

| subdivision_name4 = Linn

| subdivision_type5 =

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| length = {{convert|39|mi|km|abbr=on}}{{cite web | author = United States Geological Survey | title = United States Geological Survey Topographic Map | publisher = TopoQuest | url =http://www.topoquest.com/map.php?lat=44.44860&lon=-122.14908&datum=nad83&zoom=4&map=auto&coord=d&mode=zoomin&size=m|accessdate = July 25, 2009}} The map quadrants include river mile (RM) markers for the river's first {{convert|35|mi|km}}. The additional length is approximate.

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| discharge1_location =

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| source1 = Iron Mountain

| source1_location = Cascade Range, Willamette National Forest, Linn County, Oregon

| source1_coordinates = {{coord|44|24|09|N|122|09|43|W|display=inline}}{{cite web | work = Geographic Names Information System (GNIS) | publisher = United States Geological Survey | date = November 28, 1980 | url ={{Gnis3|1146182}} | title = Middle Santiam River | accessdate = July 25, 2009}}

| source1_elevation = {{convert|4149|ft|abbr=on}}Google Earth elevation for GNIS coordinates

| mouth = South Santiam River

| mouth_location = Foster Reservoir, Linn County, Oregon

| mouth_coordinates = {{coord|44|24|58|N|122|38|02|W|display=inline,title}}

| mouth_elevation = {{convert|640|ft|abbr=on}}

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| basin_size = {{convert|104|sqmi|abbr=on}}{{cite web | title = Willamette Basin Total Maximum Daily Loads (TMDLs): Chapter 9: South Santiam Subbasin TMDL | publisher = Oregon Department of Environmental Quality | url = http://www.deq.state.or.us/wq/tmdls/docs/willamettebasin/willamette/chpt9ssantiam.pdf | year = 2006 | format = PDF | accessdate = August 9, 2010 | url-status = dead | archiveurl = https://web.archive.org/web/20110930213230/http://www.deq.state.or.us/wq/tmdls/docs/willamettebasin/willamette/chpt9ssantiam.pdf | archivedate = September 30, 2011 }}

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The Middle Santiam River is a tributary of the South Santiam River, {{convert|38.5|mi|km}} long, in western Oregon in the United States. It drains a remote area of the Cascade Range east of Sweet Home in the watershed of the Willamette River.

It rises in the Cascades in eastern Linn County in the Willamette National Forest, about half a mile west of Iron Mountain. It flows briefly north, then generally west and southwest through the mountains and Middle Santiam Wilderness. In central Linn County it is impounded at the Green Peter Dam to form the Green Peter Reservoir. Approximately {{convert|4|mi|km|0}} downstream from the dam it joins the South Santiam from the northeast as an arm of Foster Reservoir.

class="wikitable sortable"

! location !! geolocation !! usgs map

mouth, Foster Lake{{coord|44.416235
122.633972|type:river_region:US-OR_source:gnis-1146182|name=Middle Santiam River mouth RM 0|display=inline}}Sweet Home
junction Quartzville Creek
Green Peter Lake
{{coord|44.476235
122.500638|type:river_region:US-OR_source:gnis-1146182|name=Middle Santiam River RM 8.9}}Cascadia
RM 15.4{{coord|44.500401
122.395636|type:river_region:US-OR_source:gnis-1146182|name=Middle Santiam River RM 15.4}}Yellowstone Mountain
RM 25.3{{coord|44.517068
122.250632|type:river_region:US-OR_source:gnis-1146182|name=Middle Santiam River RM 25.3}}Chimney Peak
source{{coord|44.402623
122.162015|type:river_region:US-OR_source:gnis-1146182|name=Middle Santiam River source, RM 38.5}}Harter Mountain

Tributaries

Named tributaries of the Middle Santiam River from source to mouth are Cougar, Holman, Lake, South Pyramid, Bachelor, Pyramid, Donaca, Jude, and Egg creeks, followed by Fitt, Chimney, Sixes, Bear, and Twin Falls creeks. Below that are Cougar, Crash, Maple, Elk, Knickerbocker and Cave creeks. Then come Tally, Quartzville, Whitcomb, Rumbaugh, and Thistle creeks. Finally are Green Peter, Little Bottom, Alder, Coal, and Lewis creeks.{{cite web|title=United States Topographic Map|publisher=United States Geological Survey|via=ACME Mapper|url=http://mapper.acme.com/?ll=44.416111,-122.633889&z=12&t=T&marker0=44.416111,-122.633889,Middle%20Santiam%20River|accessdate=January 15, 2016}}

See also

References

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