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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.
The Willamette River is a 187-mile (301 km) tributary of the Columbia River in the U.S. state of Oregon. The upper tributaries of the Willamette originate in mountains south and southeast of the twin cities of Eugene and Springfield. Formed by the confluence of the Middle Fork Willamette River and Coast Fork Willamette River near Springfield ...
5,000 cu ft/s (140 m 3 /s) 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 ...
formerly a natural lake, now an impoundment of the north fork of Little Butte Creek. Fish Lake (Marion County, Oregon) a 20-acre (8.1 ha) lake in the Cascades near Olallie Lake. Fish Hawk Lake. a private lake in Clatsop County near Birkenfeld. Flagstaff Lake. one of the Warner Lakes in southeastern Lake County.
Oregon City. Coordinates. 45°18′21″N 122°22′24″W / 45.3059547°N 122.3734195°W / 45.3059547; -122.3734195 [1] Operated by. Oregon Parks and Recreation Department. Milo McIver State Park is a state park in the U.S. state of Oregon. It is in Clackamas County along the Clackamas River, near Estacada and close to Mount Hood.
In the natural condition of the river, Portland was the farthest point on the river where the water was deep enough to allow ocean-going ships. Rapids further upstream at Clackamas were a hazard to navigation, and all river traffic had to portage around Willamette Falls, where Oregon City had been established as the first major town inland from Astoria.
Willamette Valley map showing main stem and major tributaries. The Willamette River drains a region of 11,478 square miles (29,730 km 2), which is 12 percent of the total area of Oregon. [4] Bounded by the Coast Range to the west and the Cascade Range to the east, the river basin is about 180 miles (290 km) long and 100 miles (160 km) wide. [13]
North Fork Reservoir is a reservoir behind North Fork Dam, on the Clackamas River, upriver from Estacada. It is found at an elevation of 666 feet (203 m). It is found at an elevation of 666 feet (203 m).