It rises in southern British Columbia, issuing out of the southern end Okanagan Lake. It flows south past Penticton and Okanagan Falls, crossing the international border into Washington near Oroville in Okanogan County. Osoyoos Lake on the river spans the U.S.-Canada border. From Oroville it flows south through the Okonogan Region, past the town of Okanogan and forming the western boundary of the Colville Indian Reservation. It enters the Columbia from the north, 5 mi (8 km) east of Brewster, between the Wells Dam (downstream) and the Chief Joseph Dam (upstream).
It receives the Similkameen River from the west and Oroville. It receives the Omak River from the east at Omak, Washington, 5 mi (8 km) northwest of the town of Okanogan.
External links
Okanogan River Basin (http://www.nwcouncil.org/fw/subbasinplanning/shortsummary.asp?id=37)
Okanogan Country Timeline (http://www.rootsweb.com/~waokanog/timeline.htm)
Washington Dept. of Transportation: Okanogan Country (http://www.wsdot.wa.gov/regions/northcentral/communication/071802-US97%20Byway%20Approval.htm)
Project boundaries are the OkanoganRiver to the East, a series of foothills on the West, the town of Okanogan on the Southwestern extremity, and the town of Riverside on the north edge.
In 1886, the lands west of the OkanoganRiver were detached from the Colville Indian Reservation and advertised in the East for settlement.
In the mid-1910s, the county's three main towns, Okanogan, Omak and Riverside, with populations of 800, 400 and 500 respectively, began to benefit because of the developing agricultural activity.
The OkanoganRiver (called the Okanagan River in its upper reaches in Canada) is a tributary of the Columbia River, approximately 115 mi (185 km) long, in southern British Columbia in Canada and north central Washington in the United States.
Osoyoos Lake on the river spans the U.S.-Canada border.
Early maps of the fur trade era show the OkanoganRiver as the "Caledonia River", a name conferred as it was the connecting route between the Columbia District and the New Caledonia Fur District (which began north of Okanagan Lake).
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