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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 12442500 SIMILKAMEEN RIVER NEAR NIGHTHAWK, WA

Okanogan County, Washington
Hydrologic Unit Code 17020007
Latitude  48°59'05", Longitude 119°37'02" NAD27
Drainage area 3,550  square miles
Gage datum 1,137.70 feet above NGVD29

Period of record
Begin Date End Date Count
1915-10-25 2025-11-19 849

 
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