Location.--Latitude 48°46'52", Longitude
117°24'55", in SE 1/4 NE 1/4 Section 19, Township 38 North,
Range 43 East, in Pend Oreille County, Hydrologic Unit 17010216, on
left bank 1,000 feet downstream from Box Canyon Dam, 2.8 miles north of
Ione, and at river mile
34.3. Drainage
area is 24,900 mi2, approximately. Datum of
gage is NGVD of 1929.