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{{short description|Lake in British Columbia, Canada}}
{{Infobox lakebody of water
|name = Okanagan Lake
|name = Okanagan Lake<br />{{Native name|oka|kɬúsx̌nítkw|paren=omit}}
|image = Peachland, British Columbia.jpg
|caption =
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|coords = {{coord|49|54|40|N|119|30|45|W|region:CA-BC_type:waterbody_dim:100000|display=inline,title}}
|lake_type = [[Fjord|Fjord Lake]],<ref name="eyles90">{{cite journal |author=Eyles, N., Mullins, H.T., and Hine, A.C. |year=1990 |title=Thick and fast: Sedimentation in a Pleistocene fiord lake of British Columbia, Canada |journal=Geology |volume=18 |issue=11 |pages=1153–1157 |doi=10.1130/0091-7613(1990)018<1153:TAFSIA>2.3.CO;2 |bibcode=1990Geo....18.1153E}}</ref> [[Monomictic]], [[Oligotrophic lake|Oligotrophic]]
|inflow = [[Mission Creek (British Columbia)|Mission Creek]], Vernon Creek, Trout Creek, Penticton Creek, Equesis Creek, Kelowna Creek, Peachland Creek and, Powers Creek, [[Whiteman Creek]]
|outflow = [[Okanagan River]]
|catchment = {{convert|6,200|km2|abbr=on}}
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[[File:Okanagan.jpg|thumb|250px|right|Okanagan Lake winds between Kelowna (foreground) and Westbank (background).]]
 
'''Okanagan Lake''' is({{lang-oka|'''kɬúsx̌nítkw'''}})<ref>{{cite aweb large,|title=kɬúsx̌nítkʷ deep(Okanagan Lake) Responsibility Planning Initiative |url=https://www.syilx.org/projects/k%C9%ACusxnitk%CA%B7-okanagan-lake-responsibility-planning-initiative/ |website=Syilx Okanagan Nation Alliance |publisher=Okanagan Nation Alliance |access-date=20 March 2022}}</ref> is a [[lake]] in the [[Okanagan|Okanagan Valley]] of [[British Columbia]], Canada. The lake is {{convert|135|km|abbr=on}} long, between {{convert|4|and|5|km|abbr=on}} wide, and has a surface area of 348&nbsp;km<sup>2</sup> (135 sq. mi.).<ref>{{Cite report
| author = <!-- or |last= and |first= -->
| date = April 1974
| title = Limnology of the Major Lakes in the Okanagan Basin. Canada - British Columbia Okanagan Basin Agreement, Final Report, Technical Supplement V.
| url = http://www.env.gov.bc.ca/wat/wq/studies/oklimnology.pdf
| publisher = British Columbia Water Resources Service
| location = Penticton, British Columbia▼
| format =
|page edition = 46
|access-date accessdate = 2015-10-22▼
▲ | location = Penticton, British Columbia
| quote = Okanagan Lake surface area: 348 * 10<sup>6</sup> m<sup>2</sup>. Dat compiled by the charts of the Fish and Wildlife Branch, Department of Recreation and Conservation, BC.▼
| chapter =
|archive-date = 2016-03-04
| section =
|archive-url = https://web.archive.org/web/20160304131730/http://www.env.gov.bc.ca/wat/wq/studies/oklimnology.pdf
| page = 46
| pages url-status = dead
}}</ref><ref>{{cite journal |author1=Stockner J.G. |author2=Northcote T.G. | year = 1974 | title = Recent limnological studies of Okanagan Basin lakes and their contribution to comprehensive water resource planning | url = | journal = Journal of the Fisheries Research Board of Canada | volume = 31 | issue = 5| pages = 955–976 | doi=10.1139/f74-111}}</ref><ref>{{cite web |url=http://www.ilec.or.jp/database/nam/nam-51.html |title=Okanagan Lake |work=World Lakes Database |publisher=International Lake Environment Committee Foundation |accessdateaccess-date=2006-05-12 |url-status=dead |archiveurlarchive-url=https://web.archive.org/web/20051121093809/http://www.ilec.or.jp/database/nam/nam-51.html |archivedatearchive-date=2005-11-21 }}</ref>▼
| docket =
▲ | accessdate = 2015-10-22
▲ | quote = Okanagan Lake surface area: 348 * 10<sup>6</sup> m<sup>2</sup>. Dat compiled by the charts of the Fish and Wildlife Branch, Department of Recreation and Conservation, BC.
▲}}</ref><ref>{{cite journal |author1=Stockner J.G. |author2=Northcote T.G. | year = 1974 | title = Recent limnological studies of Okanagan Basin lakes and their contribution to comprehensive water resource planning | url = | journal = Journal of the Fisheries Research Board of Canada | volume = 31 | issue = 5| pages = 955–976 | doi=10.1139/f74-111}}</ref><ref>{{cite web |url=http://www.ilec.or.jp/database/nam/nam-51.html |title=Okanagan Lake |work=World Lakes Database |publisher=International Lake Environment Committee Foundation |accessdate=2006-05-12 |url-status=dead |archiveurl=https://web.archive.org/web/20051121093809/http://www.ilec.or.jp/database/nam/nam-51.html |archivedate=2005-11-21 }}</ref>
 
== Hydrography ==
Okanagan Lake is called a [[Fjord#Freshwater fjords|fjord lake]] as it has been carved out by repeated glaciations. Although the lake contains numerous [[Terrace (geology)#Lacustrine terraces|lacustrine terraces]], it is not uncommon for the lake to be {{convert|100&nbsp;|m|ft|0}} deep only {{convert|10&nbsp;|m|yd|0}} offshore.<ref>{{cite book
|last= Murray A.
|first= Roed
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|isbn=978-0-9699795-4-8
}}</ref>
Major inflows include [[Mission Creek (British Columbia)|Mission]], [[Vernon, British Columbia|Vernon]], Trout, [[Penticton]], Equesis, [[Kelowna]], [[Peachland]] and Powers Creeks.<ref>{{Cite report|url=|title=CANADA - BRITISH COLUMBIA OKANAGAN BASIN AGREEMENT THE MAIN REPORT OF THE CONSULTATIVE BOARD, Part 1 Introduction|author=<!-- or |last= and |first= -->|first=|date=March 31, 1974|publisher=British Columbia Water Resources Service|issue=|doi=|location=Penticton, British Columbia|edition=|volume=|page=5|pages=|pmid=|docket=|quote=Major tributaries of Okanagan Lake, listed in order of decreasing annual discharge are Mission, Vernon, Trout Creek, Penticton, Equesis, Kelowna, Peachland and Powers Creeks.|format=|chapter=CHAPTER 1: The Okanagan Basin" in section "1.2 Drainage}}</ref>
The lake is drained by the [[Okanagan River]], which exits the lake's south end via a canal through the city of [[Penticton]] to [[Skaha Lake]], whence the river continues southwards into the rest of the South Okanagan and through [[Okanogan County, Washington]] to its confluence with the [[Columbia River|Columbia]].
 
The lake's maximum depth is {{convert|232|m}} near [[Grant Island (Okanagan Lake)|Grant Island]] (Nahun Weenox). There isare onethree other islandislands: one known as [[Rattlesnake Island (Okanagan Lake)|Rattlesnake Island]], much farther south by Squally Point. The other two are near Grant Island. They are unnamed and are located just north of the north-point of Whisky Cove at Carrs Landing. Some areas of the lake have up to {{convert|750|m}} of glacial and post-glacial sediment fill which were deposited during the [[Pleistocene Epoch]].<ref name="eyles90" />
 
Notable features of the [[Okanagan Valley]] include terraces which were formed due to the periodic lowering of the lake's predecessor, glacial [[Lake Penticton]]. These terraces are now used extensively for agriculture such as fruit cultivation.
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Various lake features include [[Rattlesnake Island (Okanagan Lake)|Rattlesnake Island]] (a small island east of [[Peachland]]), Squally Point (a popular [[Diving (sport)|cliff-diving]] area) & [[Fintry Delta]] on the west side.
 
The five-lane [[William R. Bennett Bridge]], a [[pontoon bridge|floating]] bridge with a [[Air draft|high boat passage]] [[Arch bridge|arch]] connects [[Kelowna]] to the city of [[West Kelowna]] and the community of [[Westbank, British Columbia|Westbank]]. This bridge replaced the three-lane floating [[Okanagan Lake Bridge]] on May 30, 2008, which had a lift span for passage of large boats.
 
==Steamboats of Lake Okanagan==
[[File:SS Okanagan, HRH Duke of Connaught on board, steaming up the Okanagan Lake (HS85-10-26446).jpg|thumb|SS ''Okanagan'', with [[Prince Arthur, Duke of Connaught and Strathearn|the Duke of Connaught]] on board, 1912]]
 
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== Images ==
{{commonsCommons category|Okanagan Lake}}
<gallery>
File:Maude Roxby Wetlands sunset.jpg|Maude Roxby Wetlands sunset
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==References==
{{reflistReflist}}
 
==External links==
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*[https://web.archive.org/web/20080615130432/http://www.oacbs.ca/historical/1900s_pictures.htm Okanagan Lake History website]
*[http://www.oldphotos.ca/archivos/search.php?collectionID=2&fields%5BdateTaken%5D%5Blow%5D%5BDay%5D=21&fields%5BdateTaken%5D%5Blow%5D%5BMonth%5D=02&q=sternwheeler Gallery of Okanagan Lake steamboats]
*{{commonsCommons-inline|Okanagan Lake}}
 
{{Steamboats British Columbia|state=collapsed}}
{{British Columbia hydrography}}
{{Authority control}}
 
[[Category:Steamboats of Okanagan Lake| Okanagan Lake]]
[[Category:Lakes of the Okanagan]]
[[Category:Articles containing video clips]]
[[Category:Osoyoos Division Yale Land District]]
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