Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 11299995

Click to hide Water-Year Summary instructions and information
  • 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.
  • Not all sites have reports available for every water year.
Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2023: 2022-10-01 to 2023-09-30
 

Print this page
USGS Water-Year Summary 2023
11299995 Tulloch Reservoir near Knights Ferry, CA
LOCATION - Lat 37°52'34", long 120°36'12" referenced to North American Datum of 1927, Tuolumne County, CA, Hydrologic Unit 18040010, in Rancheria del Rio Estanislao Grant, in center of Tulloch Dam on Stanislaus River, 1.2 mi downstream from Scorpion Gulch, 1.9 mi upstream from Goodwin Dam, and 5.3 mi northeast of Knights Ferry.
DRAINAGE AREA - 980 mi².
REVISIONS HISTORY - WSP 1930: Drainage area. WDR US-2008: 2007 (Table title for diversion).
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1957 to September 2006, October 2007 to current year.
GAGE - Water-stage recorder. Datum of gage is 4.05 ft above NAVD of 1988. 
REMARKS - Reservoir is formed by gravity-type concrete dam completed in October 1957. Usable capacity, 56,840 acre-ft, between elevations 431.0 ft, normal minimum water surface, and 511.0 ft, top of radial gates. Dead storage, 11,560 acre-ft. Contents based on Capacity Table #1, dated Oct. 1, 1956. Reservoir is used for irrigation and power. Water passes down Stanislaus River, first passing through Tulloch Powerplant at dam. Part of flow is diverted at Goodwin Dam to Oakdale Canal (station 11301000) and South San Joaquin Canal (station 11300500). Records represent total contents at 2400 hours. Records collected in connection with Federal Energy Regulatory Commission (FERC) project no. 2067. See schematic diagram of Stanislaus River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Prior to Oct. 1, 2008, maximum contents, 69,500 acre-ft, Jan. 7, 1965, elevation, 512.0 ft; minimum, 4,580 acre-ft, Oct. 3, 1960, elevation, 404.0 ft. Since Oct. 1, 2008, maximum contents, 66,800 acre-ft, Sept. 5, 2017, elevation 509.88.