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LOCATION.--Lat 43° 34'56", long 113° 16'14", in SW1/4 SE1/4 SW1/4
sec.17, T.3 N., R.27 E., Arco South quadrangle, Butte County, Hydrologic Unit
17040218, on right bank 0.4 mi downstream from slough entering from left bank,
and 4 mi southeast of Arco.
DRAINAGE AREA.--1,410 mi2, approximately.
PERIOD OF RECORD.--August 1946 to September 1961, May 1966 to September 1980,
March to September 1981, May 1982 to current year.
GAGE.--Elevation of gage is 5,240 ft above NGVD of 1929, by barometer.
Prior to Oct. 14, 1952, at site 800 ft upstream at datum 3.08 ft higher.
REMARKS.--Flow regulated by Mackay Reservoir (see sta 13126000). Station is
below all large diversions for irrigation in Big Lost River valley. About
57,500 acres of land irrigated by diversions from river and tributaries and
by ground-water withdrawals above station. About 10,200 acres irrigated by
subirrigation above Mackay Reservoir.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,890 ft3/s July 5, 1967,
gage height, 7.68 ft; no flow for long periods many years.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 29, 1965, reached a stage
of 8.03 ft, from floodmarks, discharge, 2,500 ft3/s.
Station operated in cooperation with U.S. Department of Energy.
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