Middle Santiam River

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.

EtymologyKalapuya tribe that lived near the river until removal to the Grande Ronde Reservation^[1]

CountryUnited States

StateOregon

CountyLinn

Quick facts Etymology, Location ...

Middle Santiam River
Sunnyside County Park on the Middle Santiam River.
Location of the mouth of the Middle Santiam River in Oregon
Etymology	Kalapuya tribe that lived near the river until removal to the Grande Ronde Reservation[1]
Location
Country	United States
State	Oregon
County	Linn
Physical characteristics
Source	Iron Mountain
• location	Cascade Range, Willamette National Forest, Linn County, Oregon
• coordinates	44°24′09″N 122°09′43″W[2]
• elevation	4,149 ft (1,265 m)[3]
Mouth	South Santiam River
• location	Foster Reservoir, Linn County, Oregon
• coordinates	44°24′58″N 122°38′02″W[2]
• elevation	640 ft (200 m)[2]
Length	39 mi (63 km)[4]
Basin size	104 sq mi (270 km2)[5]

Close

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.