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Okanogan River

Okanogan River
Okanagan River
Countries Canada, United States
State Washington
Province British Columbia
Tributaries
 - right Similkameen River
Cities Kelowna, BC, Penticton, BC, Vernon, BC, Omak, WA
Source Okanagan Lake
 - elevation 2,650 ft (808 m) [1]
 - coordinates  [2]
Mouth Columbia River
 - location Brewster, Washington, United States
 - elevation 781 ft (238 m) [3]
 - coordinates  [4]
Length 115 mi (185 km) [5]
Basin 8,200 sq mi (21,238 km2) [6]
Discharge for Malott, WA
 - average 3,039 cu ft/s (86 m3/s) [7]
 - max 45,600 cu ft/s (1,291 m3/s)
 - min 288 cu ft/s (8 m3/s)
Map of the Okanogan River, tributary of the Columbia River.

The Okanogan River (known as the Okanagan River in Canada) is a tributary of the Columbia River, approximately 115 mi (185 km) long, in southern British Columbia and north central Washington. It drains a scenic plateau region called the Okanagan Country east of the Cascade Range and north and west of the Columbia, and also the Okanagan region of British Columbia.[8] The Canadian portion of the river has been channelized since the mid-1950s.

Contents

  • Course 1
  • Tributaries 2
  • History 3
  • See also 4
  • References 5
  • External links 6

Course

The Okanogan River rises in southern British Columbia (where it is known as the Okanagan River), issuing out of the southern end of Okanagan Lake, which is on the north side of the city of Penticton. It flows south past Penticton, through Skaha Lake, past Okanagan Falls, through Vaseux Lake, and past Oliver to Osoyoos and Osoyoos Lake, which spans the Canada – United States border and has its outlet into the Okanogan River at Oroville, on the southern shore of the lake, in Okanogan County. At the border the river's name (and the region and also the name of the Okanagan Highland) changes spelling from Okanagan to Okanogan. Average annual flow of the river at this point is 643 cfs (18.2 m³/s).[9]

From Oroville the Okanogan River flows south through the Okanogan County, past Okanogan and Omak. It forms the western boundary of the Colville Indian Reservation. The Okanogan River enters the Columbia River from the north, 5 miles (8 km) east of Brewster, between the Wells Dam (downstream) and the Chief Joseph Dam (upstream). The reservoir behind Wells Dam, into which the Okanagan empties, is called Lake Pateros.

Tributaries

The river at Omak, Washington.

The Okanogan River receives the Similkameen River from the west near Oroville. It receives Omak Creek from the east near Omak, Tonasket Creek from the east near Oroville and Bonaparte Creek at Tonasket which flows from Bonaparte Lake near Wauconda and also from Aeneas Valley west of the Sanpoil. It occasionally receives water from Salmon Creek at the town of Okanogan but much of the year this water is diverted for irrigation.[10]

History

The river takes its name from the Okanagan (or Syilx) placename [ukwnaqín].[11] The name Okanagan was subsequently applied to the Syilx people themselves.

Early maps of the fur trade era show the Okanagan River 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). Fort Okanogan, a fur-trading post of the North West Company, was located at the river's confluence with the Columbia. During the Fraser Canyon Gold Rush of 1858-1859, parties of armed miners, often at conflict with native peoples in the region, travelled the Okanagan Trail and its western branch, the Similkameen Trail, via the river. After hostilities subsided, the route continued to be important as the southern leg of the overland trail to the Cariboo Gold Rush known then by its fur trade era name as the Brigade Trail.

See also

References

  1. ^ Google Earth elevation for river's exit from Okanagan Lake. Retrieved April 27, 2007.
  2. ^ Google Earth coordinates for river's exit from Okanagan Lake. Retrieved April 27, 2007.
  3. ^ Google Earth elevation for mouth of Okanagan River. Retrieved April 27, 2007.
  4. ^ U.S. Geological Survey Geographic Names Information System: Okanagan River; retrieved April 27, 2007.
  5. ^ Okanagan River, The Columbia Gazetteer of North America. 2000.
  6. ^ http://www.nwcouncil.org/fw/subbasinplanning/shortsummary.asp?id=37
  7. ^ Water Data Report WA-05-1, chapter Okanagan River Basin; retrieved April 20, 2007.
  8. ^ "Okanagan River".  
  9. ^ Annual Report to the International Joint Commission from the International Osoyoos Lake Board of Control, 2004
  10. ^ Okanogan Project - Washington
  11. ^  

External links

  • About Us, Okanagan Basin Water Board
  • Okanagan River Basin


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