Me t h ow R i v er O k a n oga n R i v e r S a n p o i l R i v e r C ol v i l le R i v e r T w i s p Riv e r C h e w a c k R i v e r K e t tl e R i v er L o s t R i v e r S t e h e k i n R i v e r F rase r R i v e r F r a n k l i n D . R o os e v el t L a k e Ross Lake L ak e C h e l a n Om a k L ake Curlew Lake Fr ase r R i ver Ket t le R iv e r We s t K e t t l e R i v e r B r i dg e R ive r O k ana g a n L a k e Sh u sw a p L a k e Adams Lake Ka ml o o p s L ak e Seton Lake Carpenter Lake Lillooet Lake Bonaparte Lake Anderson Lake Nicola Lake Skaha Lake Osoyoos Lake Spokane Omak Vernon Lytton Merritt Kelowna Osoyoos Nespelem Colville Republic Winthrop Oroville Kamloops Lillooet Penticton Princeton Grand Forks Cache Creek S i m i l k a m e e n R i v e r Th o m p s o n R i v e r Salmon Arm Twisp Inchelium Tonasket Okanagan Highlands Central Okanagan Thompson Okanagan Plateau Northern Cascade Ranges Interior Transition Ranges 124°W 124°W 123°W 123°W 122°W 122°W 121°W 121°W 120°W 120°W 119°W 119°W 118°W 118°W 117°W 117°W 116°W 48°N 48°N 49°N 49°N 50°N 50°N 51°N 51°N OKANAGAN ECOREGION: Map 3. Terrestrial Ecosections P A CI F I C O C E A N IDAHO OREGON MONTANA WASHINGTON CALIF BRITISH COLUMBIA ALBERTA CANADA U.S.A. C A N A D A U. S. A. Ecosection Central Okanagan Interior Transition Ranges Northern Cascade Ranges Okanagan Highlands Thompson Okanagan Plateau The Okanagan Ecoregion is divided into 5 sections that roughly match the British Columbia Ecoregion Classification’s ecoregion-level delineation in the Shining Mountains Project, with the exception of the Thompson Okanagan Plateau which was split into two sections. In the context of the British Columbia classification system, the term “ecoregion” applies to a lower level of ecological system classification than how it is being applied in this ecoregional assessment context. The term ecoregion is roughly equivalent to the BC classification’s ecoprovince level of classification. In the BC classification, ecoprovinces are areas with consistent climatic relief and regional landforms, and ecoregions are areas with major physiographic and minor macroclimatic variation. The Okanagan Ecoregion falls within the Dry Ecodomain which is an extension of the dry climate regime which extends up from the interior of northern Mexico and the northwestern United States. The two most commonly recognized climates are arid desert and semiarid steppe. Ecoregion Boundary International Boundary US State Boundary Lake River Transportation Water Political Populated Place Major Highway Minor Highway Scale 1:1,900,000 0 5 10 Miles 0 10 20 Kilometres The Nature Conservancy Washington Chapter October 2006 Projection: BC Albers Equal Area Sources: BC Ministry of Agriculture and Lands, Nature Conservancy of Canada, The Nature Conservancy, WA Dept. of Fish and Wildlife, WA Dept. of Natural Resources, USGS, ESRI B.C. Conservation Data Centre The Partners (NCC, TNC, WDFW, WNHP, CDC, NatureServe) do not verify or guarantee the accuracy, reliability, or completeness of any data provided. The Partners provide this data without any warranty of any kind whatsoever, either express or implied. The Partners shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided.