LOCATION.--Lat 45° 18'22", long 114° 23'31" (NAD27), in sec.19, T.23 N., R.18 E., Lemhi County, Bighorn Crags quad., Hydrologic Unit 17060203, on right bank 100 ft downstream from bridge on private road, at mile 1.0, and 7 mi southwest of Shoup.

DRAINAGE AREA.--521 mi², revised. Mean elevation, 7,030 ft.

PERIOD OF RECORD.--October 1944 to September 1977 (discontinued).

REVISED RECORDS.--WSP 1063: 1945. WRD ID-70-1: 1965(M).

GAGE.--Water-stage recorder. Datum of gage is 3,264.96 ft above mean sea level, unadjusted (planetable survey). Prior to Nov. 6, 1959, nonrecording gage 75 ft upstream at datum 0.94 ft higher.

REMARKS.--Diversions above station for irrigation of about 1,100 acres (1966 determination).

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 3,050 ft³/s June 16, 1974, gage height, 5.95 ft; minimum observed, 22 ft³/s Nov. 17, 1958, gage height, 0.57 ft, present datum.