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The Clackamas River is an approximately 83-mile (134 km) tributary of the Willamette River in northwestern Oregon, in the United States.Draining an area of about 940 square miles (2,435 km 2), the Clackamas flows through mostly forested and rugged mountainous terrain in its upper reaches, and passes agricultural and urban areas in its lower third.
Oak Grove Fork Clackamas River is a 21-mile (34 km) tributary of the Clackamas River in the U.S. state of Oregon.From its headwaters in the Warm Springs Indian Reservation near Abbot Pass in the Cascade Range, the river flows generally west through Mount Hood National Forest in Clackamas County to the unincorporated community of Ripplebrook.
The South Fork Clackamas River is a tributary, roughly 8 miles (13 km) long, of the Clackamas River in the U.S. state of Oregon.Beginning near South Fork Mountain in the western Cascade Range, the river flows generally north through Clackamas County to meet the larger river at Big Cliff.
The North Fork Clackamas River is a tributary, about 11 miles (18 km) long, of the Clackamas River in the U.S. state of Oregon.Originating at nearly 4,000 feet (1,200 m) above sea level on the west side of the Cascade Range, it flows westward through Mount Hood National Forest.
The Oak Grove Hydroelectric Project is a 44 megawatt hydroelectric plant operated by Portland General Electric (PGE) on the Oak Grove Fork Clackamas River. Water for this project is held by three lakes, built between 1923 and 1956. [1] The dam creates the impoundment Lake Harriet.
The Clackamas system does not use drawdowns, however. One place that has used drawdowns is Fall Creek Reservoir. It has seen an average of 350 wild salmon return, and numbers as high as 834 in 2020.
Red River; Roaring River (Clackamas River) Roaring River (Crabtree Creek) Roaring River (South Fork McKenzie River) Rogue River (Oregon) Rogue River (South Yamhill River) Row River; Salmon River (Clackamas County, Oregon) Salmon River (Lincoln County, Oregon) Salmonberry River; Salt Creek (Middle Fork Willamette River) Sandy River; Santiam ...
River Mill Hydroelectric Project, also known as River Mill Dam and Station M, is a hydroelectric dam and powerhouse in Clackamas County, Oregon, United States. It is just north of Estacada, Oregon, on the Clackamas River at river mile 23.5 (km 37.8). It received its name from being near a sawmill that was located along the river. [3]