Location.--Latitude 48°59'05", Longitude
119°37'02", in NW 1/4 Section 7, Township 40 North, Range 26
East, in Okanogan County, Hydrologic Unit 17020007, on
left bank 1,000 feet upstream form Oroville-Tonasket Irrigation
District canal intake, 1.6 miles northeast of Nighthawk, 3.8 miles
downstream from Palmer Creek, and at river mile
15.8. Drainage
area is 3,550 mi2. Datum of
gage is 1,137.70 feet above NGVD of 1929.