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Water-Year Summary for Site 09415000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
09415000 Virgin River At Littlefield, AZ
LOCATION - Lat 36°53'30", long 113°55'25" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.04, T.40 N., R.15 W., Mohave County, AZ, Hydrologic Unit 15010010, on right bank, 0.75 mi downstream of Beaver Dam Wash, 0.4 mi upstream from the town of Littlefield, AZ, and approximately 43 mi upstream from Lake Mead.
DRAINAGE AREA - 5,090 mi².
REVISIONS HISTORY - Revisions: WSP 959: 1932. WSP 979: 1930-31, 1933-37. WSP 1313: 1940 (M). The maximum gage height for water year 2020 was revised on Apr. 8, 2021, to correct a typographical error. 
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct. 1929 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,763.68 ft above National Geodetic Vertical Datum of 1929, from topographic map. Prior to May 28, 1933, nonrecording gage at site 300 ft upstream, and May 28, 1933, to Nov. 7, 1939, at same site, both at datum 2.53 ft higher. Nov. 8, 1939, to Mar. 31, 1942, nonrecording gage at same site at datum 2.00 ft higher. Apr. 1, 1942, to Sep. 30, 1970, water-stage recorder at same site at datum 2.00 ft higher. Oct. 1, 1970, to Aug. 7, 1979, at site 300 ft upstream at same datum (1,763.68 ft). Aug 7, 1979 to April 17, 2007, water-stage recorder at same site at same datum. Apr. 17, 2007 to Apr. 14, 2011, water-stage recorder at site 300 ft upstream at same datum. Apr. 14, 2011 to April 25 2013, water-stage recorder at same site at same datum. April 25, 2013 to current year, water-stage recorder at site 300 ft upstream at same datum.
REMARKS - 10/01/2013-09/30/2014: Records fair except for estimated daily discharges, which are poor. Many diversions upstream of gage. 10/01/2014-09/30/2015: Records fair except estimated for daily discharges, which are poor. Many diversions upstream of gage. 10/01/2015-09/30/2016: Records fair except for estimated daily discharges, which are poor. Many diversions upstream of gage. 10/01/2016-09/30/2017: Records fair except for estimated discharges, which are poor. Many diversions upstream of gage. 10/01/2017-0930/2018: Records poor. Many diversions upstream of gage. 10/01/2018-09/30/2019: Records poor. Many diversions upstream of gage. 10/01/2019-09/30/2020: Records poor. Many diversions upstream of gage.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 61,000 ft³/s, Jan. 1, 1989, gage height, 22.37 ft, due to failure of Quail Creek Dam; maximum discharge excluding 1989: 36,500 ft³/s, Jan. 10, 2005, gage height, 15.93 ft, on basis of slope-area measurement of peak flow; minimum daily, 40 ft³/s, Aug. 6, 1966.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Oct. 1948 to current year.
PERIOD OF DAILY RECORD - CHEMICAL ANALYSES: Jul. 1949 to Sep. 1969. SPECIFIC CONDUCTANCE: Oct. 1947 to Mar. 1988. WATER TEMPERATURE: Oct. 1947 to Mar. 1988. SEDIMENT DATA: Oct. 1947 to Sep. 1968, Oct. 1992 to Sep. 1995.
REMARKS - Data were collected in cooperation with the Southern Nevada Water Authority to characterize the hydraulics and water quality of the Virgin River Basin and to establish information on chemical loading into Lake Mead. Streamflow is not completely homogenous chemically from bank to bank. Flow adjacent to north (right) bank is generally more dilute, particularly at times of low streamflow; monthly data collected during Jun. 1975-Sep. 1976 indicate that specific conductance off north bank was 93 to 100 percent of streamwide average druing discharges ranging 60-230 ft³/s. Water temperature characteristically shows little or no variation from bank to bank. Detailed sampling information for period since Jun. 1975 is available from U.S. Geological Survey, Carson City, NV. Surrogate constituent values (parameters 90640, 99958, 99959, 99994, and 99995) are recovery percentages for the indicated compounds. These compounds are added to the sample to determine the relative recovery of other organic compounds that are detected using the same analytical method.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 4,650 microsiemens/cm, Aug. 21, 1966; minimum, 615 microsiemens/cm, May 27, 28, 30, 31, 1983. WATER TEMPERATURE: Maximum, 33.5°C, Jul. 7, 1953; minimum, 2.0°C Jan. 4, 1949, Jan. 4, 1950, Jan. 4, 5, 1971.