Omak Lake

{{Infobox body of water

| name = Omak Lake

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| image = Omak Lake.jpg

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| caption = Aerial view of Omak Lake

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| location = Okanogan, Washington, United States

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| coordinates = {{coord|48|16|42.56|N|119|23|52.18|W|display=inline,title}}

| type = Lake

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| length = {{convert|0.88|mi|abbr=on}}

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| area = {{convert|3243.9|acre|mi2|abbr=on}}

| depth = {{convert|325|ft|abbr=on}}

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| volume = {{convert|30710000000|ft3|abbr=on}}

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| elevation = {{convert|958|ft|abbr=on}}

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| cities = Omak

| pushpin_map = Washington

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| pushpin_map_caption = Location of Omak Lake in Washington

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Omak Lake is a saline endorheic lake in the U.S. state of Washington, within the Greater Omak Area. The lake covers {{convert|3244|acre|km2}} at an elevation of {{convert|950|ft|m}} and is fed by three small creeks. With a volume of {{convert|705,000|acre.ft|m3}} and depth of {{convert|325|ft|m}}, Omak is the largest saline lake in Washington.{{cite web|url=http://www.wsu.edu/cctfish/omak.html|title=Omak Lake, Okanogan County, Washington|access-date=2009-04-18}}

The name Omak comes from the Okanogan placename [umák].{{cite book |last= Bright |first= William |title= Native American Placenames of the United States |url= https://books.google.com/books?id=5XfxzCm1qa4C&pg=PA350 |accessdate= 1 February 2023 |year= 2004 |publisher= University of Oklahoma Press |page= 350}}

Omak Lake occupies a former channel of the Columbia River.{{Cite book| last = Majors | first = Harry M. | title = Exploring Washington | publisher = Van Winkle Publishing Co | year = 1975 | page = 48 |url=https://books.google.com/books?id=CoWrPQAACAAJ| isbn = 978-0-918664-00-6}} The Okanagan people once believed that Omak Lake was inhabited by spirits, and avoided the area.