The Calapooia River is an tributary of the

Willamette River The Willamette River ( ) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States. Flowing northward ...

in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

. The Calapooia flows generally northwest from its source in the

Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington (state), Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as m ...

near Tidbits Mountain. In its upper reaches, it passes through parts of the

Willamette National Forest The Willamette National Forest is a United States National Forest, National Forest located in the central portion of the Cascade Range of the U.S. state of Oregon. It comprises . Over 380,000 acres (694 mi2, 1,540 km2) are National Wil ...

. Further downstream, it flows through Holley then Crawfordsville and Brownsville in the

Willamette Valley The Willamette Valley ( ) is a valley in Oregon, in the Pacific Northwest region of the United States. The Willamette River flows the entire length of the valley and is surrounded by mountains on three sides: the Cascade Range to the east, the ...

before joining the Willamette at Albany. The city of

Tangent In geometry, the tangent line (or simply tangent) to a plane curve at a given point is, intuitively, the straight line that "just touches" the curve at that point. Leibniz defined it as the line through a pair of infinitely close points o ...

is also near the river on a branch of one of its downstream tributaries, Lake Creek. The confluence of the two rivers is about by water from where the Willamette joins the

Columbia River The Columbia River (Upper Chinook language, Upper Chinook: ' or '; Sahaptin language, Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river headwater ...

The map includes mile markers along the Calapooia and Willamette rivers. The Calapooia was named for the Kalapuya (also spelled Calapooia), a tribe of Native Americans.

Tributaries

Named tributaries of the river from source to mouth are Eighteen, Treadwell, and United States creeks followed by the North Fork Calapooia River. Then come King, Potts, Barrett/Hands, Washout, McKinley and Blue creeks. Further downstream are Biggs, Fox, Sweet Honey, Cedar, Pugh, Sawyer, Johnson, and Brush creeks. Finally come Warren, Cochrane, Courtney, Lake, and Oak creeks.

Dams

The Brownsville Dam was built in the late 1800s, later rebuilt as a small concrete dam. It was removed in 2007 to allow better fish passage and address safety concerns. The small Sodom Dam and Shearer Dam were both removed in 2011, leaving the Calapooia River free of any human-made dams.

References

External links

* Tributaries of the Willamette River Rivers of Linn County, Oregon Rivers of Oregon Oregon placenames of Native American origin {{Oregon-river-stub

Tributaries

Dams

See also

References

External links