Coast Fork Willamette River facts for kids

Quick facts for kids Coast Fork Willamette River
The Coast Fork Willamette River
Map of the Willamette River basin with the Coast Fork highlighted
Location of the mouth of the Coast Fork Willamette River in Oregon
Country	United States
State	Oregon
County	Lane
Physical characteristics
Main source	Confluence of Big River and Garoutte Creek Calapooya Mountains, Oregon 990 ft (300 m) 43°35′44″N 123°4′4″W / 43.59556°N 123.06778°W / 43.59556; -123.06778
River mouth	Willamette River near Eugene and Springfield, Oregon 436 ft (133 m) 44°1′23″N 123°1′25″W / 44.02306°N 123.02361°W / 44.02306; -123.02361
Length	40 mi (64 km)
Basin features
Basin size	666 sq mi (1,720 km2)
Tributaries	Right: Row River

The Coast Fork Willamette River is one of two forks that unite to form the Willamette River in western Oregon in the United States. It is about 40 miles (64 km) long, draining an area of the mountains at the south end of the Willamette Valley south of Eugene.

Course

The Coast Fork Willamette River is formed in southwestern Lane County, in the Calapooya Mountains, by the confluence of the Little River and the Big River. The Coast Fork flows north through the mountains, through the Cottage Grove Lake reservoir, to Cottage Grove, where it receives the Row River from the southeast. It continues north past Creswell and joins the Middle Fork from the south, about 2 miles (3 km) southeast of Eugene, to form the Willamette.