USGS Water-Year Summary 2021
10344500 Little Truckee River below Boca Dam, near Truckee, CA
LOCATION - Lat 39°23'13", long 120°05'40" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.28, T.18 N., R.17 E., Nevada County, CA, Hydrologic Unit 16050102, on right bank, 800 ft upstream from mouth, 1,000 ft downstream from Boca Dam, and 6.2 mi northeast of Truckee.
DRAINAGE AREA - 173 mi².
- WDR CA-79-3: Drainage area.
PERIOD OF RECORD - April to October 1890 (monthly discharge only), January 1911 to September 1915, January 1939 to current year. Prior to October 1976 published as "at Boca." Monthly discharge only for January 1939 to September 1957, published in WSP 1734.
WATER TEMPERATURE: Water years 1993-98.
GAGE - Water-stage recorder. Elevation of gage is 5,500 ft above NGVD of 1929, from topographic map. Jan. 1, 1911, to Sept. 30, 1915, nonrecording gage at site 650 ft downstream at different datum. January 1939 to September 1957, records computed from daily log of rated settings of needle valve in dam and from computed flow over spillway.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,800 ft³/s, Dec. 24, 1955, from records of Washoe County Water Conservation District; no flow for many days in many years.