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USGS Water-Year Summary 2024
10296000 West Walker River Below Little Walker River Near Coleville, CA
LOCATION - Lat 38°22'47", long 119°26'57" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.09, T.6 N., R.23 E., Mono County, CA, Hydrologic Unit 16050302, in Toiyabe National Forest, on left bank, 10 ft upstream from bridge on U.S. Highway 395, and 13 mi southeast of Coleville.
DRAINAGE AREA - 181 mi².
REVISIONS HISTORY - WDR NV-79-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Apr. 1938 to current year. Prior to Oct. 1958, published as "below East Fork."
GAGE - Water-stage recorder. Datum of gage is 6,591.39 ft above National Geodetic Vertical Datum of 1929, from topographic map. Prior to Oct. 01, 1939, at site, 125 ft downstream at datum 1.00 ft higher. Oct. 01, 1939, to Sep. 30, 1969, at present site and datum. Oct. 01, 1969, to Jul. 10, 1987, at site 100 ft downstream at same datum. Jul. 10, 1987 to Mar. 05, 1997, at site upstream 100 ft at same datum. Mar. 06, 1997 at site 150 ft downstream at datum 2.00 ft lower.
REMARKS - Station is above diversions except for a few small ranch ditches. Flow slightly regulated by Poore Lake, capacity, 1,200 acre-ft, 7 mi upstream. 10/01/2013-09/30/2014: Records good except for estimated daily discharges, which are poor. 10/01/2014-09/30/2015: Records fair except for estimated daily discharges, periods 05/10/2015 to 05/27/2015 and 06/16/2015, 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 fair except for estimated daily discharges, which are poor. 10/01/2017-09/30/2018: Records fair except for estimated discharges, which are poor. 10/01/2018-09/30/2019: Records fair except for estimated discharges, which are poor. 10/01/2019-09/30/2020: Records fair except for estimated discharges, which are poor. 10/01/2020-09/30/2021: Records fair except for estimated discharges, which are poor.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge observed prior to 1938, 5,800 ft³/s, Dec. 11, 1937, on basis of slope-area measurement of peak flow.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 12,300 ft³/s, Jan. 02, 1997, gage height, 10.11 ft; minimum daily, 9.7 ft³/s, Sep. 11, 1977.
