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LOCATION.--Lat 44° 02'33", long 116° 55'27", in NE1/4 SE1/4 SW1/4 sec.10,
T.8 N., R.5 W., Payette County, Hydrologic Unit 17050122, on right bank
just upstream from bridge on U.S. Highway 95, 1.8 mi south of Payette,
and at mile 4.1.
DRAINAGE AREA.--3,240 mi2, approximately.
PERIOD OF RECORD.--August 1935 to current year. Records for January 1895 to
July 1897 (published as "at Payette" in 18th and 19th Annual Reports) have
been found to be unreliable and should not be used.
REVISED RECORDS.--WSP 1397: 1949(m), 1952, 1953-54(m).
GAGE.--Datum of gage is 2,138.44 ft above NGVD of 1929. Aug. 1, 1935 to Aug. 7,
1939, nonrecording gage at site 50 ft downstream at present datum.
REMARKS.--Flow regulated by Deadwood Reservoir (sta 13236000), Cascade Reservoir
beginning November 1947 (sta 13244500), other smaller reservoirs, and to some
extent by Black Canyon Dam 34.6 mi upstream, where flow is regulated by
diversion and gate operation at dam. Diversions above station for irrigation
of about 196,000 acres, of which about 100 acres are irrigated by withdrawals
from ground water, about 5,100 acres are located below station, and about
53,000 acres are in adjacent basins (1966 determination).
EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge, 32,000 ft3/s Jan. 2, 1997;
minimum, 17 ft3/s June 25, 2001, gage height, 3.09 ft (result of irrigation
diversion upstream); minimum daily, 127 ft3/s Aug. 15, 1991.
Station operated in cooperation with Idaho Department of Water Resources
and Water District 65.
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