The Okanagan Basin spans two countries and comprises the basin of Okanagan Lake, the Okanogan River and tributary valleys such as that of the Similkameen and Chelan Rivers. In Canada the basin constitutes two distinct regions within British Columbia, the Similkameen Country to the west and the main Okanagan region running from the communities of Osoyoos in the south to Armstrong in the north – incorporating most of the three Okanagan regional districts and is usually known as "the Okanagan" or as the Okanagan Valley or the Okanagan Country. In the United States, the Okanogan Country is the western, lowland core of Okanogan County, which like its Canadian counterpart has a history and economy based on ranching, gold, fruit orcharding and vineyards, but the basin includes Lake Chelan and other flanking valleys. Communities in Washington's Okanogan Basin include Pateros, Omak, Okanogan, Oroville and Brewster.
Almost 200 km long and 8000 km2 in area,[1] the Canadian portion of the Okanagan watershed is approximately 2/3 the size of Vancouver Island. Okanagan Lake dominates the basin which contains many small lakes and watercourses. The Okanagan Valley was carved out by glaciers, and when the ice retreated approximately 10,000 years ago, the Canadian portion of the basin was filled with one huge waterbody, Lake Penticton. The Valley was scoured to something like its current state when an ice dam at the southern end of Lake Penticton melted, emptying most of the valley.
The Canadian Environmental Grantmakers’ Network considers the Okanagan Basin to be the most arid watershed in Canada, with an urgent need for effective water management.[2] The Okanagan Basin Water Board was established more than 35 years ago, to provide leadership on regional water issues, taking a basin-wide perspective and seeking collaborative solutions.[3]
^"What We Do – Overview | Okanagan Basin Water Board". www.obwb.ca. Retrieved 2017-08-25.
^Morris, Tim (May 2014). "The Future of Freshwater Funding in Canada: Mobilizing Collective Resources for Healthy Watersheds" (PDF). www.cegn.org. Canadian Environmental Grantmakers’ Network. Retrieved 2015-12-07. OKANAGAN BASIN: Canada's most arid watershed is facing significantly increased water withdrawals due to a population explosion, agricultural expansion and climate change.
The OkanaganBasin spans two countries and comprises the basin of Okanagan Lake, the Okanogan River and tributary valleys such as that of the Similkameen...
British Columbia defined by the basin of Okanagan Lake and the Canadian portion of the Okanagan River. It is part of the Okanagan Country, extending into the...
Okanagan Lake (Okanagan: kɬúsx̌nítkw) is a lake in the Okanagan Valley of British Columbia, Canada. The lake is 135 km (84 mi) long, between 4 and 5 km...
chapter Okanagan River Basin; retrieved April 20, 2007. Water Data Report WA-05-1, chapter Okanagan River Basin; retrieved April 20, 2007. "Okanagan River"...
Okanogan Country), defined by the basin of Okanagan Lake and the Okanagan River. With an estimated 400,000 residents, the Okanagan Country spans from the Thompson...
Anonymous (1974b). Limnology of the Major Lakes in the OkanaganBasin. Canada - British Columbia OkanaganBasin Agreement, Final Report, Technical Supplement V...
southern Interior Plateau region based primarily in the Okanagan River Basin and the Columbia River Basin in precolonial times in Canada and the United States...
The OkanaganBasin Water Board (OBWB) is a water governance body designated to identify and resolve critical water issues for the Okanagan watershed in...
Okanagan language Okanagan (also Okanagan Valley), a region of British Columbia OkanaganBasin, watershed in British Columbia and Washington Okanagan...
and Kootenay Rivers and excludes that of the Okanagan, Kettle and Similkameen Rivers. The Columbia Basin includes the southeastern portion of the Canadian...
territory are roughly the basin of Okanagan Lake and the Okanagan River, plus the basin of the Similkameen River to the west of the Okanagan valley, and some of...
subsequent hand removal or pressure washing upon boat removal. In the Okanagan River Basin of south-central British Columbia, a specially-adapted rototiller...
The Okanagan Highland is an elevated hilly plateau area in British Columbia, Canada, and the U.S. state of Washington (where it is spelled Okanogan Highlands)...
Skaha Lake is a freshwater lake, through which the Okanagan River flows, in the Okanagan region of south central British Columbia. Along the shoreline...
described as the complete Canadian portion of the Columbia Basin minus lands drained by the Okanagan River. Contingent on the above boundaries, the Kootenays...
reaches of the Shuswap basin, southeast of Shuswap Lake and northeast of the Okanagan, are generally considered to be part of Okanagan or of the Monashee...
the centre hosted the kick-off of the Okanagan Fall Wine Festival, the annual general meeting of the OkanaganBasin Water Board, and the Kelowna Student...
election. While on City Council, Gray was also elected as Chair of the OkanaganBasin Water Board, and spearheaded the region's flood mitigation strategy...
course from its Big Bend and are flanked on the west by the basin of the Thompson and Okanagan Rivers. There are many named subranges of all four subgroupings...
the Nicola River. The Okanagan South Okanagan Central Okanagan – the area around Kelowna. North Okanagan (also Northern Okanagan) Shuswap Country – the...
Okanagan dry forests is a temperate coniferous forest ecoregion in the Pacific Northwest of North America, as defined by the World Wildlife Fund (WWF)...
is a shallow freshwater lake located along the course of the Okanagan River in the Okanagan Valley of British Columbia, Canada. The name "vaseux" is French...
derived from the word sẁiẁs meaning "narrowing of the waters" in the local Okanagan language (Syilx'tsn). Located on the lakeshore are the town of Osoyoos...
elymoides. Native American groups had a variety of uses for the grass. The Okanagan and Colville used the roots medicinally to treat internal bleeding and...
Artemisia tridentata, commonly called big sagebrush, Great Basin sagebrush or simply sagebrush (one of several related species of this name), is an aromatic...
The Eocene Okanagan Highlands or Eocene Okanogan Highlands are a series of Early Eocene geological formations which span a 1,000 km (620 mi) transect of...
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