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North Fork Clackamas River
Name origin: Clackamas tribe
Country  United States
State Oregon
County Clackamas
 - location Cascade Range, Clackamas County, Oregon
 - elevation 3,963 ft (1,208 m) [1]
 - coordinates 45°13′38″N 122°02′44″W / 45.22722°N 122.04556°W / 45.22722; -122.04556 [2]
Mouth Clackamas River
 - location North Fork Reservoir, Clackamas County, Oregon
 - elevation 666 ft (203 m) [2]
 - coordinates 45°13′56″N 122°15′16″W / 45.23222°N 122.25444°W / 45.23222; -122.25444 [2]
Length 11 mi (18 km) [3]
Basin 47 sq mi (122 km2) [4]
Location of the mouth of the North Fork Clackamas River in Oregon

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. It joins the Clackamas at North Fork Reservoir, about 32 miles (51 km) from the larger river's confluence with the Willamette River. From source to mouth, the following tributaries enter the river: Dry Creek from the right bank, Boyer Creek from the left bank, then Whiskey, Bedford, Bee, and Fall creeks, all from the right.[3][5]

Elevations in the watershed range from 4,770 feet (1,450 m) in the headwaters on Squaw Mountain to 660 feet (200 m) at the river mouth. Prominent landforms include Ladee Flats, a flat-topped ridge composed of lava flows resistant to erosion. The North Fork valley is narrow and steep, and a 50-foot (15 m) waterfall 2.5 miles (4.0 km) from the mouth limits passage of migratory fish. Native rainbow and cutthroat trout are found in the upper river and its tributaries, while the lower river has winter and summer steelhead, coho salmon, spring chinook, and stocked rainbow trout.[6]

See also


  1. ^ Source elevation derived from Google Earth search using GNIS source coordinates.
  2. ^ a b c "North Fork Clackamas River, Oregon". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved March 12, 2009.  
  3. ^ a b DeLorme Mapping. Oregon Atlas and Gazetteer [map], 1991 edition. ISBN 0-89933-235-8. p. 61.
  4. ^ Watershed Analysis, Chapter 1, p. 4
  5. ^ United States Geological Survey. "United States Geological Survey Topographic Map: Elwood, Bedford Point, and Three Lynx, Oregon, quads". TopoQuest. Retrieved March 19, 2009.  
  6. ^ Watershed Analysis, Chapter 1, pp. 4, 13

Works cited



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