Middle Santiam River

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Middle Santiam River
Name origin: Kalapuya tribe that lived near the river until removal to the Grande Ronde Reservation[1]
Country United States
State Oregon
County Linn
Source Iron Mountain
 - location Cascade Range, Willamette National Forest, Linn County, Oregon
 - elevation 4,149 ft (1,265 m) [2]
 - coordinates 44°24′09″N 122°09′43″W / 44.40250°N 122.16194°W / 44.40250; -122.16194 [3]
Mouth South Santiam River
 - location Foster Reservoir, Linn County, Oregon
 - elevation 640 ft (195 m) [3]
 - coordinates 44°24′58″N 122°38′02″W / 44.41611°N 122.63389°W / 44.41611; -122.63389Coordinates: 44°24′58″N 122°38′02″W / 44.41611°N 122.63389°W / 44.41611; -122.63389 [3]
Length 39 mi (63 km) [4]
Basin 104 sq mi (269 km2) [5]
Location of the mouth of the Middle Santiam River in Oregon

The Middle Santiam River is a tributary of the South Santiam River, 38.5 miles (62.0 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 4 miles (6 km) downstream from the dam it joins the South Santiam from the northeast as an arm of Foster Reservoir.

location geolocation usgs map
mouth, Foster Lake 44°24′58″N 122°38′02″W / 44.416235°N 122.633972°W / 44.416235; -122.633972 (Middle Santiam River mouth RM 0) Sweet Home
junction Quartzville Creek
Green Peter Lake
44°28′34″N 122°30′02″W / 44.476235°N 122.500638°W / 44.476235; -122.500638 (Middle Santiam River RM 8.9) Cascadia
RM 15.4 44°30′01″N 122°23′44″W / 44.500401°N 122.395636°W / 44.500401; -122.395636 (Middle Santiam River RM 15.4) Yellowstone Mountain
RM 25.3 44°31′01″N 122°15′02″W / 44.517068°N 122.250632°W / 44.517068; -122.250632 (Middle Santiam River RM 25.3) Chimney Peak
source 44°24′09″N 122°09′43″W / 44.402623°N 122.162015°W / 44.402623; -122.162015 (Middle Santiam River source, RM 38.5) Harter Mountain


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.[6]

See also[edit]


  1. ^ McArthur, Lewis A.; McArthur, Lewis L. (2003). Oregon Geographic Names (Seventh ed.). Portland, Oregon: Oregon Historical Society Press. p. 848. ISBN 0-87595-277-1. 
  2. ^ Google Earth elevation for GNIS coordinates
  3. ^ a b c "Middle Santiam River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved July 25, 2009. 
  4. ^ United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved July 25, 2009.  The map quadrants include river mile (RM) markers for the river's first 35 miles (56 km). The additional length is approximate.
  5. ^ "Willamette Basin Total Maximum Daily Loads (TMDLs): Chapter 9: South Santiam Subbasin TMDL" (PDF). Oregon Department of Environmental Quality. 2006. Retrieved August 9, 2010. 
  6. ^ "United States Topographic Map". United States Geological Survey. Retrieved January 15, 2016 – via ACME Mapper. 

External links[edit]