10260700 EAST FORK OF WEST FORK MOJAVE RIVER ABOVE SILVERWOOD LAKE, NEAR HESPERIA, CA
LOCATION.-Lat 34°16'13", long 117°17'31", in NW 1/4 SW 1/4 sec.10, T.2 N., R.4 W., San Bernardino
County, Hydrologic Unit 18090208, San Bernardino National Forest, on right bank, 0.8 mi downstream from Houston
Creek, 1.5 mi upstream from Silverwood Lake, and 10.8 mi south of Hesperia.
DRAINAGE AREA.-11.2 mi2.
PERIOD OF RECORD.-October 1995 to current year. Unpublished records for water years 1961-95 available in files of
the California Department of Water Resources.
GAGE.-Water-stage recorder and concrete control. Elevation of gage is 3,590 ft above sea level, from topographic
map.
REMARKS.-Flow slightly regulated by Lake Gregory 3.2 mi upstream. See schematic diagram of the 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.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,440 ft3/s, Feb. 23, 1998, gage height, 6.92 ft; no
flow for many days in each year.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 .51 .56 1.2 1.3 3.9 1.7 1.6 2.7 .82 .07 .00 .00
2 .45 .57 1.1 1.2 3.2 1.7 1.7 2.6 1.8 .05 .00 .00
3 .44 .61 1.1 1.2 2.8 1.6 1.8 2.5 1.3 .04 .00 .00
4 .5 .61 2.9 1.2 3.2 1.6 2.1 2.4 1.2 .03 .00 .00
5 .43 .61 2.6 1.1 4.4 1.6 1.9 2.3 1 .03 .00 .00
6 .39 .61 2.6 1.1 4.4 1.6 4.7 2.1 .91 .02 .00 .00
7 .39 .65 2 1.2 4.1 1.6 5.9 2 .82 .01 .00 .00
8 .38 .83 1.7 1.1 4 1.6 5.1 1.9 .79 .02 .00 .00
9 .37 .8 1.5 1 8.7 1.6 4.8 1.9 .78 .02 .00 .00
10 .38 .74 1.3 1 15 1.6 4.2 1.8 .75 .01 .00 .00
11 .38 .89 1.2 1 8.3 1.6 5.1 1.7 .69 1.4 .00 .00
12 .37 .95 1.2 1 5.8 1.6 12 1.6 .63 .18 .00 .00
13 .36 .81 1.2 1 4.9 1.5 9.3 1.6 .57 .12 .00 .00
14 .36 .81 1.3 1 4.4 1.5 8 1.6 .49 .09 .00 .00
15 .43 .78 1.2 1 3.5 2.3 7.3 1.6 .43 .06 .00 .00
16 .47 .74 1.1 1 3.1 2 6.5 1.5 .39 .05 .00 .00
17 .44 .72 1 1 2.9 1.9 5.8 1.4 .36 .04 .00 .00
18 .46 .74 1 1.1 2.7 1.8 5.3 1.3 .33 .03 .00 .00
19 .46 .78 1.4 1.2 2.6 1.7 5 1.3 .3 .03 .00 .00
20 .43 .81 2.2 1.3 2.5 1.7 4.6 1.3 .26 .02 .00 .00
21 .43 .81 1.7 1.5 5.6 1.7 4.2 1.3 .25 .01 .00 .00
22 .42 .81 1.3 1.3 10 1.6 3.9 1.3 .23 .01 .00 .00
23 .44 .78 1.3 1.3 10 1.6 3.6 1.2 .22 .00 .00 .00
24 .46 .74 1.2 1.4 10 1.6 3.6 1.2 .19 .00 .00 .00
25 .48 .74 1.2 2.1 7.9 1.6 3.3 1.1 .17 .00 .00 .00
26 .52 .77 1.2 4 1.9 1.6 3 1 .15 .00 .00 .00
27 .53 .79 1.2 5 1.7 1.5 2.7 .98 .13 .00 .00 .00
28 .52 5 1.2 3.7 1.6 1.5 2.9 .93 .11 .00 .00 .00
29 .55 2.5 1.2 2.8 --- 1.4 2.8 .86 .09 .00 .00 .00
30 .59 1.5 1.2 2.6 --- 1.4 3 .87 .08 .00 .00 .00
31 .56 --- 1.3 4.5 --- 1.4 --- .84 --- .00 .00 ---
TOTAL 13.90 29.06 44.8 52.2 143.1 50.7 135.7 48.68 16.24 2.34 0.00 0.00
MEAN .45 .97 1.45 1.68 5.11 1.64 4.52 1.57 .54 .075 .000 .000
MAX .59 5.0 2.9 5.0 15 2.3 12 2.7 1.8 1.4 .00 .00
MIN .36 .56 1.0 1.0 1.6 1.4 1.6 .84 .08 .00 .00 .00
AC-FT 28 58 89 104 284 101 269 97 32 4.6 .00 .00
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 1999, BY WATER YEAR (WY)
MEAN .16 .92 3.13 9.43 31.6 15.9 13.4 14.2 4.65 1.32 .28 .64
MAX .45 2.10 9.36 29.5 84.8 38.0 43.0 53.2 17.5 5.18 1.11 2.56
(WY) 1999 1997 1997 1997 1998 1998 1998 1998 1998 1998 1998 1998
MIN .000 .27 .61 1.27 5.11 1.64 1.89 .65 .17 .001 .000 .000
(WY) 1998 1998 1996 1996 1999 1999 1997 1997 1997 1997 1996 1996
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1996 - 1999
ANNUAL TOTAL 7541.31 536.72
ANNUAL MEAN 20.7 1.47 7.82
HIGHEST ANNUAL MEAN 20.5 1998
LOWEST ANNUAL MEAN 1.47 1999
HIGHEST DAILY MEAN 577 Feb 23 15 Feb 10 577 Feb 23
1998
LOWEST DAILY MEAN .36 Oct 13 .00 Jul 23 .00 Jul 12
1996
ANNUAL SEVEN-DAY MINIMUM .37 Oct 8 .00 Jul 23 .00 Jul 12
1996
INSTANTANEOUS PEAK FLOW 28 Feb 9 1440 Feb 23
1998
INSTANTANEOUS PEAK STAGE 3.47 Feb 9 6.92 Feb 23
1998
ANNUAL RUNOFF (AC-FT) 14960 1060 5670
10 PERCENT EXCEEDS 47 3.9 21
50 PERCENT EXCEEDS 4.2 1.0 .85
90 PERCENT EXCEEDS .51 .00 .00
USGS Water Resources of California
USGS Headquarters |
Biology |
Geology |
Mapping |
Water