Location.--Latitude 47°24'11", Longitude
119°29'11", in NW 1/4 SW 1/4 Section 18, Township 22 North,
Range 27 East, in Grant County, Hydrologic Unit 17020014, on
east shore 0.9 mile north of town of Soap Lake, and at river mile
undetermined. Drainage
area is 413 mi2, of which 281 mi2 in the
vicinity of Banks Lake is noncontributing. Datum of
gage is NGVD of 1929, adjustment of 1937, Bureau of Reclamation
datum.
Lake elevation varies from
1,070.45 feet, September 29, 2005, minimum recorded, to 1,079.2
feet, January 28, 1953, maximum observed, with a record of 1,083.1
feet known.
This station managed by the Upper Columbia Field Office (Spokane).