Oak Grove Fork Clackamas River
| Oak Grove Fork Clackamas River | |
| Name origin: For Oak Grove, an early name for Wapinitia in Wasco County, towards which the river generally leads, going upstream | |
| Country | United States |
|---|---|
| State | Oregon |
| County | Clackamas |
| Source | near Abbot Pass |
| - location | Cascade Range, Clackamas County, Oregon |
| - elevation | 3,719 ft (1,134 m) |
| - coordinates | 45°07′11″N 121°41′07″W / 45.11972°N 121.68528°W |
| Mouth | Clackamas River |
| - location | near Ripplebrook, Clackamas County, Oregon |
| - elevation | 1,362 ft (415 m) |
| - coordinates | 45°04′28″N 122°03′08″W / 45.07444°N 122.05222°WCoordinates: 45°04′28″N 122°03′08″W / 45.07444°N 122.05222°W |
| Length | 21 mi (34 km) |
| Basin | 124 sq mi (321 km2) |
| Discharge | for upstream of hydroelectric dam intake, 6.7 miles (10.8 km) from mouth |
| - average | 486 cu ft/s (14 m3/s) |
| - max | 5,000 cu ft/s (142 m3/s) |
| - min | 128 cu ft/s (4 m3/s) |
  Location of the mouth of the Oak Grove Fork Clackamas River in Oregon
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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. Here it enters the main stem of the Clackamas River. Oak Grove Fork feeds Timothy Lake and Lake Harriet, two artificial impoundments built along its course to control water flows to hydroelectric plants.
The Oak Grove Fork Clackamas River arises at an elevation of 3,719 feet (1,134 m) above sea level and falls 2,357 feet (718 m) between source and mouth to an elevation of 1,362 feet (415 m). The main stem begins in the Cascade Range near Abbot Pass, a mountain gap at 45°07′50″N 121°42′18″W / 45.13056°N 121.70500°W, on the border between Clackamas County and Wasco County. Originating on the Warm Springs Indian Reservation, the river flows generally west about 21 miles (34 km) through the Mount Hood National Forest to the unincorporated community of Ripplebrook, where it joins the main stem of the Clackamas River.
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Wikipedia