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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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USGS Water-Year Summary 2024
10295000 East Walker River Near Mason, NV
LOCATION - Lat 38°52'38.64", long 119°08'39.41" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.25, T.12 N., R.25 E., Lyon County, NV, Hydrologic Unit 16050301, 3.0 mi above mouth, 7.5 mi south of Yerington, and 5.6 mi southeast of Mason.
DRAINAGE AREA - 1,230 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Dec. 1910 to Sep. 1912, Jul. 1913 to Sep. 1916, Sep. 2010 to Sep. 2015; Mar 2023 to current year.
GAGE - Water-stage recorder. Datum of gage is 4,463 ft above North American Vertical Datum of 1988, from digital elevation model.
REMARKS - 10/01/2013-09/30/2014: Records poor. 10/01/2014-09/30/2015: Records poor. Many diversions above station for irrigation.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,590 ft³/s, Jun. 20, 1911, gage height, 9.5 ft; minimum daily, 0.09 ft³/s, Jun. 21, 2014.
