Water-Data Report 2008

11316602 Tiger Creek Regulator Reservoir near Pioneer, CA
San Joaquin River Basin LOCATION.--Lat 382838, long 1202706 referenced to North American Datum of 1983, in SW NE sec.8, T.7 N., R.14 E., Amador County, CA, Hydrologic Unit 18040012, in Eldorado National Forest, near left bank of dam after crossing over intake channel, 7.2 mi northeast of Pioneer, and 12.9 mi west of Salt Springs Reservoir. DRAINAGE AREA.--7.33 mi. SURFACE-WATER RECORDS PERIOD OF RECORD.--October 2002 to current year. GAGE.--Water-stage recorder. Elevation of gage is 3,592 ft above NGVD of 1929, from topographic map. COOPERATION.--Records were collected by Pacific Gas and Electric Company, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 137. REMARKS.--Reservoir is formed by concrete arch dam, established in 1931. Capacity, 570 acre-ft, at gage height 24.0 ft. Figures given, including extremes, represent total contents. See schematic diagram of Mokelumne River Basin available from the California Water Science Center. EXTREMES FOR PERIOD OF RECORD.--Maximum contents, 543 acre-ft, Apr. 4, 2006, gage height, 21.95 ft; minimum, 146 acre-ft, estimated, May 10, 2008, gage height unknown. EXTREMES FOR CURRENT YEAR.--Maximum contents, 528 acre-ft, Sept. 4, gage height, 20.90 ft; minimum, 146 acre-ft. estimated, May 10, gage height unknown. Capacity table (gage height, in feet, and contents, in acre-feet) (Table provided by Pacific Gas and Electric Company, dated October 1997) Gage Height Contents Gage Height Contents Gage Height 24 Contents 570
U.S. Department of the Interior U.S. Geological Survey
Water-Data Report Tiger Creek Regulator Reservoir near Pioneer, CAContinued RESERVOIR STORAGE, ACRE FEET WATER YEAR OCTOBER 2007 TO SEPTEMBER 2008 DAILY OBSERVATION AT 2400 HOURS [e, estimated] Day 31 Oct 462 Nov --Dec 423 Jan 368 15.03 +33 Feb 406 ----10.48 -50 Mar 402 20.12 +112 Apr 323 e302 e289 e276 -----242 May e263 e250 e237 e224 e211 e198 e185 e172 e159 e19.10 +229 Jun --12.53 -77 Jul 401 13.30 +9 Aug 402 12.57 -8 Sep e303 e298 e293 e288 e283 e278 e273 e268 -----161
Max 488 Min 393 Gage height, in feet, at end of month 15.51 10.84 12.09 Change in contents, in acre-feet +49 -52 +13
Calendar Year 2007 Max Min Change in contents, in acre-feet -19

Water Year 146 -145

Water-Data Report Tiger Creek Regulator Reservoir near Pioneer, CAContinued
RESERVOIR STORAGE, ACRE FEET, OBSERVATION AT 2400 HOURS

N 2007

M 2008