1998 California Hydrologic Data Report
10260950 WEST FORK MOJAVE RIVER ABOVE MOJAVE RIVER FORKS RESERVOIR, NEAR HESPERIA, CA
- 1998 WY
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 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 .00 .00 .00 .00 11 123 229 2.4 49 11 4.6 6.6
2 .00 .00 .00 .00 11 53 73 2.1 44 12 5.2 6.5
3 .00 .00 .00 .00 27 42 43 2.8 61 11 6.3 6.6
4 .00 .00 .00 .02 40 34 39 3.2 63 10 3.9 e7.4
5 .00 .00 .00 1.0 24 28 34 94 62 10 .00 e7.0
6 .00 .00 23 .30 330 50 65 e408 61 9.7 .00 e6.8
7 .00 .00 18 1.1 405 28 140 e310 e51 9.4 .00 e6.4
8 .00 .00 13 2.5 1000 20 70 e270 e51 19 .00 e5.8
9 .00 .00 3.9 4.0 294 15 38 e240 e50 37 .00 e5.2
10 .00 .00 .00 61 219 12 67 e160 e50 27 .00 e4.5
11 .00 .00 .00 13 134 9.8 83 e155 50 10 .00 e3.2
12 .00 .00 .01 16 35 37 125 e140 50 9.7 .00 e2.8
13 .00 .00 .37 37 11 82 167 e610 52 11 .00 e2.4
14 .00 .00 .63 22 41 100 275 e490 51 8.7 .00 e2.2
15 .00 .00 .75 22 38 87 119 e395 53 8.4 .00 e2.0
16 .00 .00 .63 21 19 73 67 211 54 8.1 .00 e2.0
17 .00 .00 1.1 18 16 64 57 159 54 8.0 .00 e1.8
18 .00 .00 .29 18 16 56 55 129 53 8.1 .00 e1.8
19 .00 .00 .14 23 40 49 53 93 53 7.8 .00 e1.6
20 .00 .00 1.0 22 48 41 44 86 52 6.5 .00 e1.6
21 .00 .00 3.8 22 33 22 27 86 48 6.5 .00 e1.4
22 .00 .00 3.7 22 106 19 19 91 39 8.3 .00 e1.4
23 .00 .00 3.5 22 2510 17 20 122 14 8.2 .00 e1.2
24 .00 .00 3.1 22 2590 15 15 123 12 7.0 .00 e1.2
25 .00 .00 .42 22 1230 214 5.9 74 12 6.6 .00 e1.0
26 .00 .00 .18 21 818 225 5.4 63 12 6.4 .00 e1.0
27 .00 .00 .00 11 290 65 4.8 117 13 6.0 .31 e.98
28 .00 .00 .00 9.8 169 411 4.3 126 11 5.5 2.7 e.98
29 .00 .00 .00 11 --- 493 3.6 107 11 5.3 4.2 e.96
30 .00 .00 .00 12 --- 383 3.1 58 11 5.2 5.3 e.96
31 .00 --- .00 15 --- 279 --- 46 --- 4.6 6.3 ---
TOTAL 0.00 0.00 77.52 471.72 10505 3146.8 1951.1 4973.5 1247 312.0 38.81 95.28
MEAN .000 .000 2.50 15.2 375 102 65.0 160 41.6 10.1 1.25 3.18
MAX .00 .00 23 61 2590 493 275 610 63 37 6.3 7.4
MIN .00 .00 .00 .00 11 9.8 3.1 2.1 11 4.6 .00 .96
AC-FT .00 .00 154 936 20840 6240 3870 9860 2470 619 77 189
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1975 - 1998, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 2.80 5.15 15.0 77.5 168 160 54.9 35.6 15.0 1.53 .60 .72
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 .61 .24 .000 .000 .000 .000 .000 .000
(WY) 1975 1975 1976 1975 1991 1977 1987 1984 1975 1975 1975 1975
SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1975 - 1998
ANNUAL TOTAL 4988.10 22818.73
ANNUAL MEAN 13.7 62.5 44.2
HIGHEST ANNUAL MEAN 183 1978
LOWEST ANNUAL MEAN .94 1987
HIGHEST DAILY MEAN 951 Jan 26 2590 Feb 24 4900 Feb 10 1978
LOWEST DAILY MEAN .00 Jan 1 .00 Oct 1 .00 Oct 1 1974
ANNUAL SEVEN-DAY MINIMUM .00 Mar 12 .00 Oct 1 .00 Oct 1 1974
INSTANTANEOUS PEAK FLOW 7740 Feb 23 11300 Feb 10 1978
INSTANTANEOUS PEAK STAGE 16.26 Feb 23 23.20 Feb 10 1978
ANNUAL RUNOFF (AC-FT) 9890 45260 31990
10 PERCENT EXCEEDS 34 125 69
50 PERCENT EXCEEDS .12 8.1 .00
90 PERCENT EXCEEDS .00 .00 .00
1998 California Hydrologic Data Report Index
USGS Water Resources of California
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Last modified: Wed Aug 4 09:40:26 PDT 1999