10260790 SILVERWOOD LAKE NEAR HESPERIA, CA.  


LOCATION - Lat 34°18'15", long 117°19'05", in SW 1/4 NE 1/4 sec.32, T.3 N., R.4 W., San Bernardino 
County, Hydrologic Unit 18090208, San Bernardino National Forest, in control structure, near spillway 
of Cedar Springs Dam, and 8.7 mi south of Hesperia.

DRAINAGE AREA - 34.0 mi".

PERIOD OF RECORD - October 1995 to current year. Unpublished records for water years 1972.95 available 
in files of the California Department of Water Resources.

GAGE - Water-stage recorder. Elevation of gage is sea level.

REMARKS - Lake is formed by earthfill dam completed in 1972. Capacity, 74,970 acre-ft, at spillway crest 
of 3,355 ft. Dead storage at invert of outlet structure, 3,967 acre-ft, elevation, 3,235 ft. Lake 
is a holding basin for East Branch California Aqueduct. See REMARKS for station 10260820. See schematic 
diagram of Mojave River Basin.

COOPERATION - Records were collected by California Department of Water Resources, under general supervision 
of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project 
2426. Contents not rounded to U.S. Geological Survey standards. EXTREMES (AT 2400 HOURS)

FOR PERIOD OF RECORD - Maximum contents, 74,843 acre-ft, Oct. 24, 1999, elevation, 3,354.87 ft; minimum, 
38,006 acre-ft, Mar. 22, 1996, elevation, 3,310.24 ft. EXTREMES (AT 2400 HOURS)

FOR CURRENT YEAR - Maximum contents, 73,600 acre-ft, Jan. 16, elevation, 3,353.59 ft; minimum, 65,183 
acre-ft, Dec. 1, elevation, 3,344.59. Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on table provided by California Department of Water Resources, dated January 1978) 3,300 31,395 
3,325 48,732 3,345 65,554 3,355 74,970 3,315 41,311 3,335 56,811

              RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001

                                               DAILY OBSERVATION AT 2400 HOURS

DAY      OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

1      70828    69913    65183    72178    70903    68521    71987    68567    72734    70694    70252    68940
2      71036    69482    65873    72513    70412    68048    71349    68474    72734    71235    69566    70554
3      70610    68744    66969    72140    70030    67604    71026    68512    72255    71188    69547    71796
4      70761    68279    67024    72035    70073    68447    70384    67937    72274    71026    69454    71787
5      70459    68968    65772    71863    70195    68595    69913    67613    72255    70979    71055    71968

6      70223    67946    66328    71577    70705    68530    69182    69136    72456    71159    71416    71873
7      70167    67595    66722    71017    70657    69397    69960    68558    69911    70535    71226    71825
8      71074    67061    67309    70865    70970    69998    71710    67835    72111    71930    70903    71549
9      70733    66923    68651    70932    70771    70582    71625    67623    71834    72207    70450    72676
10     70525    67024    69707    71112    69772    70242    71568    67144    71977    71720    70261    72379

11     70459    67153    70233    71169    69725    70214    71340    67015    71949    71264    69678    72523
12     70913    68168    70355    72609    69866    70346    70856    66868    71539    70970    71625    72475
13     71121    68215    70894    72926    70695    69678    70620    68512    70989    70865    71653    72561
14     70469    68605    71074    73022    70667    69033    70506    69369    70742    70941    71796    72465
15     69960    68066    71558    73214    70922    68781    72111    69998    70393    71768    71806    72743

16     69978    67641    71548    73600    69782    67595    71435    70176    69922    71663    71368    72926
17     69369    67245    71545    73330    69472    67217    71140    70979    70431    71501    70799    73032
18     70629    67300    71368    73349    69472    68261    70847    71454    70790    71425    70421    72762
19     70761    68094    71359    73176    69660    67918    70639    71473    70374    71482    71615    72446
20     70761    67826    71283    73369    69707    67282    70431    72039    70223    71045    71549    72638

21     69885    66887    71663    72878    69566    66484    70667    71777    70337    70799    71444    72092
22     69425    66529    71568    72264    69472    66438    71691    71406    69763    71473    71292    71663
23     69108    67429    71197    71949    69575    66703    71939    71501    69341    71644    71112    71568
24     68958    67632    71378    72350    68772    67780    71672    72226    70563    71330    70308    70610
25     68502    67530    72312    71920    69491    69248    71777    72513    69829    71045    70092    69810

26     68168    67863    72897    72475    69454    69716    71178    72676    69528    71055    70941    70884
27     67199    67401    72609    72647    68865    71045    70771    72350    69192    70733    70761    71653
28     67309    66804    72561    72638    68837    71672    69810    72935    69080    70639    70374    71283
29     69266    65954    73032    71997      ---    72178    70809    72734    68707    70951    69707    70771
30     69397    65273    73166    70922      ---    72073    69603    72878    69323    70761    69351    71557

31     69276      ---    72542    71026      ---    71796      ---    73032      ---    70337    69005      ---
MAX    71121    69913    73166    73600    70970    72178    72111    73032    72734    72207    71806    73032
MIN    67199    65273    65183    70865    68772    66438    69182    66868    68707    70337    69005    68940
a    3349.04  3344.69  3352.49  3350.90  3348.57  3351.71  3349.39  3353.00  3349.09  3350.17  3348.75  3351.78
b       -675    -4003    +7269    -1516    -2189    +2959    -2193    +3429    -3709    +1014    -1332    +2552
CAL YR 2000 b +2874
WTR YR 2001 b +1606