LOCATION.--Lat 44° 34'20", long 114° 18'20" (NAD27), in SE1/4 SE1/4 NW1/4 sec.2, T.14 N., R.18 E., Custer County, ID, Hydrologic Unit 17060201, Pats Creek quad., 0.1 mi downstream from Eddy Creek, 6 mi northwest of Challis and at mile 6.75.

DRAINAGE AREA.--84.6 mi², revised. Mean elevation, 7,830 ft.

PERIOD OF RECORD.--October 1943 to August 1963 (discontinued).

GAGE.--Water-stage recorder. Datum of gage is 5,369.3 ft, levels by Topographic Division. Prior to Sept. 27, 1944, staff gage and Sept. 27, 1944 to Nov. 10, 1948, water-stage recorder, at site 350 ft downstream at datum 0.64 ft lower. Nov. 11, 1948 to Aug. 11, 1956, water-stage recorder at present site at datum 0.64 ft lower.

REMARKS.--Diversions above station for irrigation. Partly regulated since 1954 by Mesquite Flat Reservoir, (capacity, 1,054 acre-ft).

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 508 ft³/s June 1, 1956; maximum gage height, 6.30 ft, May 24, 1956, datum then in use; minimum discharge, 4.7 ft³/s Mar. 11, 1960, gage height, 2.34 ft.