Clackamas River
Tributary in Oregon
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The Clackamas River is an approximately 83-mile tributary of the Willamette River in northwestern Oregon, in the United States. Wikipedia
Discharge: 2,689 ft³/s
Source: Olallie Butte
Mouth: Willamette River
Length: 83 mi
Elevation: 4,909 ft
Basin size: 940 sq mi (2,400 km2)