LOCATION.--Lat 43° 48'30", long 115° 46'30" (NAD83), in SE1/4 SW1/4 sec.32, T.5 N., R.6 E., Boise County, Idaho City quad., Hydrologic Unit 17050112, on right bank 0.8 mi upstream from West Fork, at mile 2, and 3.2 mi southeast of Idaho City.

DRAINAGE AREA.--4.76 mi², revised. Mean elevation, 5,240 ft.

PERIOD OF RECORD.--January 1939 to November 1941, October 1950 to September 1971 (discontinued). Monthly discharge only October and November 1950, published in WSP 1737.

REVISED RECORDS.--WSP 1447: 1952. WSP 1567: Drainage area.

GAGE.--Water-stage recorder and sharp-crested concrete control with V-notch. Elevation of gage is 4,090 ft above NGVD of 1929, from topographic map. Prior to Sept. 10, 1966, at datum 0.06 ft lower.

REMARKS.--No diversion or regulation.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 46 ft³/s Apr. 22, 1965, gage height, 2.07 ft; minimum, 0.07 ft³/s Aug. 23, 1940, gage height, 0.21 ft.