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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
10351600 Truckee River Below Derby Dam Near Wadsworth, NV
LOCATION - Lat 39°35'05", long 119°26'25" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 SE 1/4 sec.19, T.20 N., R.23 E., Storey County, NV, Hydrologic Unit 16050102, on right bank, 1,500 ft downstream from Derby Dam, 3.2 mi downstream from Clark, 9 mi southwest of Wadsworth, and at mi 34.49 upstream from Marble Bluff Dam.
DRAINAGE AREA - 1,676 mi².
REVISIONS HISTORY - WSP 1714: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Jan. 1909 to Dec. 1910, Jan. to Dec. 1916, Jan. 1918 to Jul. 1958, Oct. 1958 to current year. Records prior to Jan. 1918 not equivalent, due to site location above Derby Dam.
GAGE - Water-stage recorder. Datum of gage is 4185.53 ft above NAVD of 1988. The NAVD of 1988 datum was determined by a level 2 GNSS survey (Reference Frame NAD_83 (2011) (EPOCH:2010.0000), GEOID12A) by USGS on April 08, 2014 and tied to RM5. Prior to April 08, 2014, the gage datum was 4,200 ft above National Geodetic Vertical Datum of 1929, from topographic map by USGS on September 30, 1958. Prior to September 30, 1958 gage was run by USBR at different datum.
COOPERATION - Records prior to Sep. 30, 1958 were provided by the U.S. Bureau of Reclamation.
REMARKS - Flow regulated by Lake Tahoe (station 10337000), Martis Creek Lake (station 10339380), Prosser Creek (station 10340300), Stampede (station 10344300) and Boca (station 10344490) Reservoirs, Donner (station 10338400) and Independence (station 10342900) Lakes, several powerplants, many diversions for irrigation, and by Derby Dam. Truckee Canal diverts water at Derby Dam out of basin to Lahontan Reservoir into the Carson River basin. Records good except for estimated discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 19,700 ft³/s, Jan. 3, 1997, gage height, 14.57 ft; no flow some days, some years.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1988 to 1996; 2001 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: Jun. 1988 to Sep. 1996; Oct. 2001 to current year.
INSTRUMENTATION - Water temperature monitor Jun. 1988 to Sep. 1996, hourly; Oct. 2001 to current year, four times per hour.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum recorded, 30.0°C, July 15, 1992, 0.0°C, many days in winter months many years.
