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Water-Year Summary for Site 09413700

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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
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2021
09413700 Virgin River Above The Narrows Near Littlefield, AZ
LOCATION - Lat 36°55'17", long 113°49'53" referenced to North American Datum of 1983, in NE 1/4 SE 1/4 sec.29, T.41 N., R.14 W., Mohave County, AZ, Hydrologic Unit 15010010, on right bank, 700 ft north of mile marker 15 and 120 ft east of the edge of the road of Interstate 15.
DRAINAGE AREA - 4,415 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1998 to current year.
GAGE - Water-stage recorder. Elevation of gage is 2,000 ft above National Geodetic Vertical Datum of 1929, from topographic map. Prior to April 30, 2015 at location 950 ft downstream at same datum. From Jan. 16, 2005 to Apr. 13, 2007 at location 750 ft downstream at same datum.
REMARKS - 10/01/2013-09/30/2014: Records fair except for estimated daily discharges, which are poor. 10/01/2014-09/30/2015: Records fair except for estimated daily discharges, which are poor. 10/01/2015-09/30/2016: Records fair except for estimated daily discharges, which are poor. 10/01/2016-09/30/2017: Records poor. 10/01/2017-09/30/2018: Records poor. 10/01/2018-09/30/2019: Records poor. 10/01/2019-09/30/2020: Records poor. 
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Jan. 1, 1989, 61,000 ft³/s, on basis of slope-area measurement of peak flow at Virgin River at Littlefield site about 10 mi downstream, due to failure of Quail Creek Dam.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 28,700 ft³/s, Dec. 21, 2010, gage height, 25.70 ft; no flow at times in the summer, some years.
WATER-QUALITY RECORDS
PERIOD OF RECORD - June 1998 to Mar. 2017.
REMARKS - In June 1998, station was established in cooperation with the Southern Nevada Water Authority to characterize the hydraulics and water quality of the Virgin River Basin. Field parameters collected quarterly.