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LOCATION.--Lat 43° 55'50", long 116° 26'30", in SW1/4 NE1/4 sec.22, T.7 N., R.1 W.,
Gem County, Hydrologic Unit 17050122, on right bank, 0.3 mi downstream from
Black Canyon Dam, 5 mi northeast of Emmett, and at mile 38.4.
DRAINAGE AREA.--2,680 mi2, approximately.
PERIOD OF RECORD.--June 1925 to current year.
REVISED RECORDS.--WSP 1153: 1946(m), 1948(m).
GAGE.--Datum of gage is 2,400.32 ft above NGVD of 1929 (levels by U.S Bureau of
Reclamation).
REMARKS.--Flow regulated by Deadwood Reservoir beginning November 1930,
Cascade Reservoir beginning November 1947 (see sta 13244500), other smaller
reservoirs, and to some extent by Black Canyon Dam 0.3 mi upstream where flow
is regulated by diversion and gate operation at dam. Diversions above station
for irrigation of about 160,000 acres, of which about 43,700 acres are below
station and about 53,000 acres are in adjacent basins (1966 determination).
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 32,700 ft3/s Dec. 23, 1964,
gage height, 15.88 ft; minimum daily, 0.7 ft3/s Jan. 7, 1957, gage height,
-1.49 ft, when gates in dam were closed.
Station operated in cooperation with Idaho Department of Water Resources.
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