11313500 SALT SPRINGS RESERVOIR NEAR WEST POINT, CA

LOCATION.-Lat 38°29'55", long 120°12'52", in NW 1/4 SE 1/4 sec.33, T.8 N., R.16 E., Calaveras County, Hydrologic Unit 18040012, Eldorado 
  National Forest, near center of Salt Springs Dam on North Fork Mokelumne River, 1.8 mi upstream from Cole Creek, and 18 mi northeast of 
  West Point. 
DRAINAGE AREA.-169 mi2. 
PERIOD OF RECORD.-March 1931 to current year. Prior to October 1964, records published as usable contents. 
REVISED RECORDS.-WSP 1930: Drainage area. 
GAGE.-Water-stage recorder. Prior to Oct. 1, 1991, nonrecording gage read once daily. Datum of gage is sea level (levels by Pacific Gas & 
  Electric Co.). 
REMARKS.-Reservoir is formed by concrete-faced rockfill dam, completed in 1931; storage began in March 1931. Capacity, 141,857 acre-ft 
  between elevations 3,667.75 ft, outlet drain, and 3,958.0 ft, top of radial gates. Storage of 1,860 acre-ft available for release to river only. Water 
  is released through Salt Springs Powerplant (station 11313510) just downstream from dam and discharged into Tiger Creek Powerplant 
  Conduit (station 11314000). Figures given, including extremes, represent total contents. See schematic diagram of Mokelumne River Basin. 
COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
  with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 
EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 142,091 acre-ft, July 3, 1993, elevation, 3,958.24 ft; no contents at times in     
1932-33, 1945, 1962. 
EXTREMES FOR CURRENT YEAR.-Maximum contents, 141,568 acre-ft, May 31, elevation, 3,957.70 ft; minimum, 45,361, acre-ft, Dec. 4, 
  elevation, 3,834.10 ft. 
  Capacity table (elevation, in feet, and contents, in acre-feet)
  (Based on table provided by Pacific Gas & Electric Co., dated October 1964)
	3,700	1,251	3,720	3,519	3,740	7,324	3,800	28,017
	3,705	1,679	3,725	4,324	3,750	9,799	3,850	54,852
	3,710	2,199	3,730	5,229	3,760	12,689	3,900	90,786
	3,715	2,812	3,735	6,230	3,780	19,632	3,960	143,788 

                   RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                                        DAILY OBSERVATION AT 2400 HOURS
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1    e71963    56296    47123  e134819   130692   112401   111100   130815  e141290   136401   117724    91129
  2    e72071    55444    46548  e134343   130376   111645   111100   130983  e141088   135629   117111    90390
  3    e72179    54616    45895  e133970   130047  e110676   110868   131301  e140608   135225   116054    89804
  4    e72287    53953    45361  e133318   129613   109701   110660   132283  e140897   134781   115165    89210
  5    e72395    53354    47065  e132942   129038   108880   110466   133952  e140897   134277   112754    88604
 
  6    e72323    52640    47071  e132470   128509   108118   110245   135064  e140608   133822   111286    87683
  7    e72107    51938    46863  e132191   127916   107328   110031   135863  e140800   133327   110660   e86848
  8    e72323    51182    46595  e132099   127308   106611   109962   136430  e141184   132876   110065    86052
  9    e72251    50523    46636  e132007   126662   105938   109745   137191   140816   132432   109065    85440
 10     71833    49750    47387  e131914   125954   105473   109368   137116   140778   132007   108075    84835
 
 11     71283    49009    48316  e131822   125293   105103   108979  e137770   140893   131367   107364    84241
 12     70845    48187    51163  e131637   124629   104725   108696   138789   140941   130385   106822    83672
 13     70531    47764    52379   131367   123941   104243   108417   139066   140826   129512   106252    82865
 14     69857    47025    52708   131105   123225   103795   108349   138865   141476   128860   105638    81842
 15     68919    46286    52640   130927   122600   103553  e109300   137418   141286   128373   105028    81119
 
 16     68026    45678    52379   130551   121931   103463  e110340   136678   141228   127769   103969    80559
 17     67196    46484    52126   130193   121364   103191  e111380   136554   141238   127668   102938    79975
 18     66433    49437    51750   129826   120682   102947  e112420   136334   141190   126992   102130    79412
 19     65639    49520    51298   129419   120034   102767  e113390   136659   141027   126082   101550    78856
 20     64810    49484    50835   129131   119368   102955  e117010   137097   140749   125154   100958    77987
 
 21     63955    49585    50625   128747   118642   103048  e120300   137645   140325   124340   100352    76964
 22     63185    51121    51194   128841   117884   103274  e123640   138281   139777   124032    99758    76277
 23     62417    51194    51323   128719   117173   103827  e126806   139456   139104   123502    98804    75434
 24     61755    50925    50990   128500   116317   104674   128127   140006  e138890   122975    97778    74877
 25     61122    50493    50655   130312   115525   105464   129205   140074   138693   122312    96631    74326
 
 26     60455    49949    50541   131367   114740   106611   130248   140547   138405   121658    95996    73799
 27     59633    49378    50889   131497   114023   107953   133542  e140570   138021   120709    95386    72977
 28     58887    48835    50733   131423   113268   108971   134610  e140820   137645   119916    94825    71963
 29     58191    48228    51653   131301      ---   109771   133383  e141070   137258   119359    94177    71269
 30     57533    47628    54074   131115      ---   110474   131664  e141320   136878   118954    93345    70702
 31     56899      ---    58165   130899      ---   110491      ---  e141568      ---   118382    92175      ---
 
MAX     72395    56296    58165   134819   130692   112401   134610   141568   141476   136401   117724    91129
MIN     56899    45678    45361   128500   113268   102767   108349   130815   136878   118382    92175    70702
 a    3853.22  3838.05  3855.18  3946.41  3926.86  3923.68  3947.23  3957.70  3952.78  3932.65  3901.74  3873.45
 b     -15568    -9271   +10537   +72734   -17631    -2777   +21173    +9904    -4690   -18496   -26207   -21473
CAL YR 1996   MAX 141476  MIN 41941  b +16378
WTR YR 1997   MAX 141568  MIN 45361  b  -1765
 
  	e  Estimated.