10260950 WEST FORK MOJAVE RIVER ABOVE MOJAVE RIVER FORKS RESERVOIR, NEAR HESPERIA, CA
LOCATION.-Lat 34°20'20", long 117°15'25", in NW 1/4 NW 1/4 sec.24, T.3 N., R.4 W., San Bernardino
County, Hydrologic Unit 18090208, on left bank, on upstream wingwall of concrete double-box culvert on Arrowhead
Lake Road, 0.1 mi northeast of junction with Highway 174, 4.5 mi downstream from Cedar Springs Dam on Silverwood
Lake, and 6.5 mi southeast of Hesperia.
DRAINAGE AREA.-70.3 mi2.
PERIOD OF RECORD.-October 1974 to current year. October 1974 to September 1991 published incorrectly as station
10261000. Records for station 10261000 are not equivalent due to difference in drainage area.
REVISED RECORDS.-WDR CA-84: 1983.
GAGE.-Water-stage recorder. Elevation of gage is 3,040 ft above sea level, from topographic map.
REMARKS.-Records poor. Regulated by Silverwood Lake (holding basin for imported water), total capacity, 78,000
acre-ft, 4.5 mi upstream, which releases all natural inflow as soon as possible after a storm. See schematic
diagram of Mojave River Basin.
EXTREMES FOR THE PERIOD OF RECORD.-Maximum discharge, 11,300 ft3/s, Feb. 10, 1978, gage height
unknown, on basis of slope-area measurement of peak flow; maximum gage height, 23.2 ft, Feb. 10, 1978, backwater
from Mojave River Forks Reservoir; no flow for several months in most years.
EXTREMES OUTSIDE PERIOD OF RECORD.-Maximum discharge, 26,100 ft3/s, Mar. 2, 1938, gage height unknown,
on basis of slope-area measurement of peak flow for station 10261000 at site 1.5 mi downstream.
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 e.94 .00 .00 e1.4 .00 .00 5.7 9.4 .00 .00 .00 .00
2 e.92 .00 .00 1.3 .00 .00 5.8 10 .00 .00 .00 .00
3 e.90 .00 .00 e1.4 .00 .00 6.1 9.6 .00 .00 .00 .00
4 e.88 .00 .00 e1.2 .00 .00 6.5 9.2 .00 .00 .00 .00
5 e.86 .00 .72 e1.0 .00 .00 5.9 8.5 .00 .00 .00 .00
6 1.9 .00 3.2 e.90 .00 .00 6.7 7.9 .00 .00 .00 .00
7 1.4 .00 3.5 e.80 .00 .00 8.5 7.7 .00 .00 .00 .00
8 .92 .00 3.5 .73 .00 .00 12 7.3 .00 .00 .00 .00
9 .89 .00 3.5 e.70 .00 .00 13 7.4 .00 .00 .00 .00
10 1.0 .00 3.5 e.65 1.2 .00 13 7.2 .00 .00 .00 .00
11 1.0 .00 3.8 .60 .34 .00 14 7.3 .00 .00 .00 .00
12 1.1 .00 3.8 .60 .00 .00 22 6.9 .00 .00 .00 .00
13 .99 .00 3.6 .43 .00 .00 28 3.4 .00 .00 .00 .00
14 .87 .00 3.6 .00 .00 .51 32 1.3 .00 .00 .00 .00
15 .00 .00 3.7 .00 .00 5.8 29 .84 .00 .00 .00 .00
16 .00 .00 4.6 .00 .00 4.5 26 .51 .00 .00 .00 .00
17 .00 .00 3.8 .00 .00 4.6 24 .21 .00 .00 .00 .00
18 .00 .00 3.8 .00 .00 4.9 23 .00 .00 .00 .00 .00
19 .00 .00 e3.0 .00 .00 4.5 22 .00 .00 .00 .00 .00
20 .00 .00 2.6 .00 .00 5.1 18 .00 .00 .00 .00 .00
21 .00 .00 1.3 .00 .00 5.2 15 .00 .00 .00 .00 .00
22 .00 .00 e2.0 .00 .00 5.9 15 .00 .00 .00 .00 .00
23 .00 .00 3.6 .00 .00 6.2 13 .00 .00 .00 .00 .00
24 .00 .00 3.0 .00 .00 6.0 12 .00 .00 .00 .00 .00
25 .00 .00 3.7 .00 .00 6.0 11 .00 .00 .00 .00 .00
26 .00 .00 1.8 .00 .00 6.2 10 .00 .00 .00 .00 .00
27 .00 .00 1.7 .00 .00 6.2 9.8 .00 .00 .00 .00 .00
28 .00 .00 e1.6 .00 .00 5.9 11 .00 .00 .00 .00 .00
29 .00 .00 e1.6 .00 --- 5.7 10 .00 .00 .00 .00 .00
30 .00 .00 e1.5 .00 --- 5.6 10 .00 .00 .00 .00 .00
31 .00 --- 1.4 .00 --- 5.6 --- .00 --- .00 .00 ---
TOTAL 14.57 0.00 77.42 11.71 1.54 94.41 438.0 104.66 0.00 0.00 0.00 0.00
MEAN .47 .000 2.50 .38 .055 3.05 14.6 3.38 .000 .000 .000 .000
MAX 1.9 .00 4.6 1.4 1.2 6.2 32 10 .00 .00 .00 .00
MIN .00 .00 .00 .00 .00 .00 5.7 .00 .00 .00 .00 .00
AC-FT 29 .00 154 23 3.1 187 869 208 .00 .00 .00 .00
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1975 - 1999, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 2.71 4.94 14.5 74.4 162 154 53.2 34.3 14.4 1.46 .57 .69
MAX 41.8 50.4 68.6 810 883 948 253 296 169 10.1 11.4 8.29
(WY) 1994 1993 1984 1993 1993 1983 1980 1978 1978 1998 1997 1993
MIN .000 .000 .000 .000 .055 .24 .000 .000 .000 .000 .000 .000
(WY) 1975 1975 1976 1975 1999 1977 1987 1984 1975 1975 1975 1975
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1975 - 1999
ANNUAL TOTAL 22833.20 742.31
ANNUAL MEAN 62.6 2.03 42.5
HIGHEST ANNUAL MEAN 183 1978
LOWEST ANNUAL MEAN .94 1987
HIGHEST DAILY MEAN 2590 Feb 24 32 Apr 14 4900 Feb 10
1978
LOWEST DAILY MEAN .00 Jan 1 .00 Oct 15 .00 Oct 1
1974
ANNUAL SEVEN-DAY MINIMUM .00 Aug 5 .00 Oct 15 .00 Oct 1
1974
INSTANTANEOUS PEAK FLOW 38 Apr 14 11300 Feb 10
1978
INSTANTANEOUS PEAK STAGE .58 Apr 14 23.20 Feb 10
1978
ANNUAL RUNOFF (AC-FT) 45290 1470 30770
10 PERCENT EXCEEDS 125 6.8 67
50 PERCENT EXCEEDS 7.8 .00 .00
90 PERCENT EXCEEDS .00 .00 .00
USGS Water Resources of California
USGS Headquarters |
Biology |
Geology |
Mapping |
Water