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USGS Water-Year Summary 2024
13132500 BIG LOST RIVER NEAR ARCO, ID
LOCATION - Lat 43°34'56", long 113°16'14" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.17, T.3 N., R.27 E., Butte County, ID, Hydrologic Unit 17040218, Arco South quad., on right bank 0.4 mi downstream from slough entering from left bank, and 4 mi southeast of Arco.
DRAINAGE AREA - 1,410 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1946 to September 1961, May 1966 to September 1980, March to September 1981, May 1982 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 5,239.79 feet above NAVD 1988. Prior to Oct. 14, 1952, at site 800 ft upstream at datum 3.08 ft higher.
REMARKS - Flow regulated by Mackay Reservoir (see station 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 groundwater withdrawals above station. About 10,200 acres irrigated by sub-irrigation above Mackay Reservoir.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 29, 1965, reached a stage of 8.03 ft, from flood marks, discharge, 2,500 ft³/s.
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.
