Location.--Latitude 48°59'20", Longitude
117°20'55", in NE 1/4 NE 1/4 Section 10, Township 40 North,
Range 43 East, in Pend Oreille County, Hydrologic Unit 17010216, at
Boundary Dam 1.0 mile upstream from International Boundary, 8.8 miles
north of Metaline Falls, and at river mile
17. Drainage
area is 25,200 mi2 approximately. Elevation
of gage is undetermined.