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 mi2.
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 Unpublished records for water years 1972-95 available in files of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. Datum 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
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 a Federal Energy Regulatory Commission project. Contents not rounded
to U.S. Geological Survey standards.
EXTREMES (AT 2400 HOURS) FOR PERIOD OF RECORD.-Maximum contents, 74,521 acre-ft, Jan. 18, 1998, elevation,
3,354.54 ft; minimum, 38,006 acre-ft, Mar. 22, 1996, elevation, 3,310.24 ft.
EXTREMES (AT 2400 HOURS) FOR CURRENT YEAR.-Maximum contents, 74,201 acre-ft, Jan. 1, elevation, 3,354.21 ft;
minimum, 53,636 acre-ft, Mar. 5, elevation, 3,331.17.
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 3,335 56,811
3,315 41,311 3,345 65,554
3,325 48,732 3,355 74,970
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 71368 72264 72341 74201 62472 58337 70120 72427 69575 69519 71254 69379
2 70998 72561 72063 74007 62146 57453 70497 72782 69491 69360 71368 69117
3 71226 72983 72369 73929 61960 56031 70771 73051 69528 69341 71672 69276
4 71425 72638 72983 73571 61697 54866 71359 72916 69538 69052 71663 69061
5 71302 72772 72609 73311 61477 53636 71511 72666 70280 68567 71406 69192
6 70979 72628 73089 73022 61206 53742 71093 72436 70809 68502 71511 69678
7 70960 72379 73195 72561 61013 54340 71473 72197 70629 67558 71511 70129
8 70799 72408 73003 72245 60917 55199 71235 72092 70752 66832 71501 69847
9 70884 72216 72791 71853 60978 56626 71121 71777 70318 67466 71634 69951
10 71074 72551 72916 71853 60969 58132 71577 71911 70035 68011 71368 69857
11 71235 72810 72810 71691 60760 59056 71815 71530 70676 67863 71093 70148
12 71473 72302 72839 71311 60778 60082 71749 70960 70913 68438 70572 70111
13 71768 72169 72561 71093 60821 61223 71997 70544 70951 67447 70601 70337
14 71892 71777 72580 71017 60961 62587 72025 70535 70979 67438 70233 70365
15 72083 71730 72599 70572 60856 64039 71853 70535 71112 67678 70111 70299
16 72083 71730 72580 69922 60717 65464 71758 69838 70639 67853 69876 70233
17 72102 71787 72590 69145 60577 66997 71634 69660 70073 68029 69482 70393
18 72408 71987 72523 68001 60464 68131 71549 69332 69810 68735 69425 70525
19 72475 72035 72523 66740 60308 69528 71463 69482 69969 69192 69435 70837
20 72054 72331 72551 65273 60195 71197 71045 69641 70158 69397 69435 70884
21 71710 72083 72859 63780 60039 71045 71558 69885 70374 69650 69061 70724
22 71806 71987 72849 63102 59952 71026 71634 69697 70205 69463 68614 70894
23 72178 71968 73032 62871 59771 70970 71473 69904 70280 69397 68698 71112
24 72503 72226 72676 62833 59641 71530 71492 70092 70195 69932 68781 71055
25 72638 72350 72619 62809 59555 71283 71596 69904 69941 70761 68837 71273
26 71882 72341 72264 62862 59339 70714 71949 69650 70082 71463 68753 71672
27 72111 72753 72274 62960 58721 70261 71958 69369 70158 71730 68912 71625
28 72197 73022 72408 62818 58747 70913 71882 69154 70186 71873 68865 71672
29 72302 72887 72791 62809 --- 71064 72035 69304 69904 71997 69557 71787
30 72887 72686 73243 62641 --- 71008 72102 69061 69603 71672 69500 71511
31 72571 --- 73707 62596 --- 70308 --- 69369 --- 71511 69379 ---
MAX 72887 73022 73707 74201 62472 71530 72102 73051 71112 71997 71672 71787
MIN 70799 71730 72063 62596 58721 53636 70120 69061 69491 66832 68614 69061
a 3352.52 3352.64 3353.70 3341.70 3337.28 3350.14 3352.03 3349.14 3349.39 3351.41 3349.15 3351.41
b +1307 +115 +1021 -11111 -3849 +11561 +1794 -2733 +234 +1908 -2132 +2132
CAL YR 1998 b +4478
WTR YR 1999 b +247
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