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
Location of the site in Washington