page_title: Okanogan River
section_title: Tributaries
hierarchical_section_title: Okanogan River / Tributaries
caption_attribution_description: A bridge across the Okanogan River at Omak, Washington.
context_page_description: The Okanogan River is a tributary of the Columbia River, approximately 115 mi 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. The Canadian portion of the river has been channelized since the mid-1950s.
context_section_description: 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.
caption: The river at Omak, Washington
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