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LOCATION.--Lat 43° 46'21", long 115° 54'49"(Rev.)(NAD83), in NW1/4 NW1/4 sec.18, T.5 N., R.5 E., Boise County, Warm Springs Point quad., Hydrologic Unit 17050112, on left bank 1.75 mi upstream from Thorn Creek, and 5.5 mi southwest of Idaho City.
DRAINAGE AREA.--119 mi2.
PERIOD OF RECORD.--January 1939 to November 1941 (discontinued).
GAGE.--Water-stage recorder and broad-crested concrete control. Elevation of gage is 3,550 ft above NGVD of 1929, from topographic map.
REMARKS.--Many diversions above station for placer mining. A small ditch diverts water from Thorn Creek into Pine Creek drainage for mining use. Flow slightly regulated by passage through dredged areas in vicinity of Idaho City.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 725 ft3/s Mar. 27, 1940.
gage height, 4.38 ft; minimum discharge, 4.4 ft3/s Aug. 30, 1939, gage height,