upstream of hydroelectric dam intake, 6.7 miles (10.8 km) from mouth[6]
• average
486 cu ft/s (13.8 m3/s)[6]
• minimum
128 cu ft/s (3.6 m3/s)
• maximum
5,000 cu ft/s (140 m3/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 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.
^ abc"Oak Grove Fork Clackamas River". Geographic Names Information System. United States Geological Survey. 1980. Retrieved November 1, 2008.
^McArthur, Lewis A.; McArthur, Lewis L. (2003). Oregon Geographic Names, Seventh Edition. Portland, Oregon: Oregon Historical Society Press. pp. 713, 1008. ISBN 0-87595-277-1.
^Source elevation derived from Google Earth search using GNIS source coordinates.
^"Online Topographic Maps from the United States Geological Survey". TopoQuest. Retrieved November 2, 2008.
^ abc"Water-data report 2012: 14209000 Oak Grove Fork above Powerplant Intake, OR" (PDF). United States Geological Survey. Retrieved February 12, 2014.
and 23 Related for: Oak Grove Fork Clackamas River information
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