11014000 JAMUL CREEK NEAR JAMUL, CA
LOCATION.--Lat 32°38'15", long 116°53'00", in NW 1/4 NE 1/4 sec.4, T.18 S., R.1 E., San Diego County, Hydrologic
Unit 18070304, on right bank 300 ft upstream from Otay Road crossing at upper end of Lower Otay Lake, 1.4 mi
downstream from Dulzura Creek, and 5.5 mi south of Jamul.
DRAINAGE AREA.--70.1 mi2.
PERIOD OF RECORD.--April 1940 to December 1940, April 1941 to September 1978, October 1985 to current year.
REVISED RECORDS.--WSP 1565: 1952, 1954. WSP 1715: 1944, 1946. WDR CA-93-1: Drainage area. WDR CA-94-1:
Datum of gage.
GAGE.--Water-stage recorder and broad-crested weir control with low-water venturi-type flume. Datum of gage is
511.89 ft above sea level, revised. Prior to Oct. 1, 1951, at datum 1.00 ft higher.
REMARKS.--Records good. No regulation upstream from station. Water is diverted from Cottonwood Creek at Barrett
Lake (station 11011000) via San Diego and Dulzura Conduit into Dulzura Creek, a tributary to Jamul Creek, and
is included in discharge for this station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5,870 ft3/s, Mar. 5, 1995, gage height, 7.59 ft, present
datum, from rating curve extended above 1,200 ft3/s on basis of critical-depth computations; no flow for many
days most years.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 100 ft3/s, or maximum, from rating
curve extended above 1,200 ft3/s on basis of critical-depth computations:
Discharge Gage height Discharge Gage height
Date Time (ft3/s) (ft) Date Time (ft3/s) (ft)
Dec. 20 1745 46 2.41
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 .06 7.0 37 36 15 2.4 32 32 .58 .00 .00 .00
2 .03 28 37 36 6.2 2.1 33 32 .58 .00 .00 .00
3 .00 31 37 36 4.4 1.9 33 33 .39 .00 .00 .00
4 .00 33 37 36 3.5 1.7 33 32 .32 .00 .00 .00
5 .00 34 37 36 3.0 1.8 33 32 .28 .00 .00 .00
6 .00 35 37 36 2.7 1.7 33 32 .25 .00 .00 .00
7 .00 35 37 36 2.5 1.5 33 32 .25 .00 .00 .00
8 .00 34 37 35 2.1 1.4 33 32 .19 .00 .00 .00
9 .00 35 37 35 1.9 1.4 33 32 .19 .00 .00 .00
10 .00 35 36 35 1.8 1.5 34 31 .18 .00 .00 .00
11 .00 35 37 34 1.7 1.4 34 31 .15 .00 .00 .00
12 .00 35 37 35 1.8 1.7 34 31 .15 .00 .00 .00
13 .00 35 38 35 1.8 9.7 34 31 .14 .00 .00 .00
14 .00 36 38 35 1.7 6.1 33 31 .11 .00 .00 .00
15 .00 36 37 35 1.6 3.2 33 31 .11 .00 .00 .00
16 .00 36 37 36 1.5 2.5 33 31 .08 .00 .00 .00
17 .00 36 37 36 1.5 2.1 34 31 .08 .00 .00 .00
18 .00 36 37 35 1.5 1.9 36 31 .05 .00 .00 .00
19 .00 36 37 35 1.5 1.7 34 31 .03 .00 .00 .00
20 .00 36 39 35 1.4 1.6 34 31 .02 .00 .00 .00
21 .00 36 38 36 1.5 1.6 34 31 .00 .00 .00 .00
22 .00 36 38 39 1.7 1.5 33 31 .00 .00 .00 .00
23 .00 36 38 36 1.6 1.5 33 31 .00 .00 .00 .00
24 .00 36 37 36 1.6 1.4 32 28 .00 .00 .00 .00
25 .00 36 37 36 2.8 1.4 33 6.4 .00 .00 .00 .00
26 .00 37 37 36 8.7 1.4 33 2.9 .00 .00 .00 .00
27 .00 36 37 35 4.4 6.6 33 1.9 .00 .00 .00 .00
28 .00 36 37 35 3.3 27 32 1.3 .00 .00 .00 .00
29 .00 37 37 35 2.7 30 32 1.0 .00 .00 .00 .00
30 .00 37 37 32 --- 31 32 .84 .00 .00 .00 .00
31 .00 --- 37 8.6 --- 32 --- .67 --- .00 .00 ---
TOTAL 0.09 1027.0 1153 1072.6 87.4 184.7 996 766.01 4.13 0.00 0.00 0.00
MEAN .003 34.2 37.2 34.6 3.01 5.96 33.2 24.7 .14 .000 .000 .000
MAX .06 37 39 39 15 32 36 33 .58 .00 .00 .00
MIN .00 7.0 36 8.6 1.4 1.4 32 .67 .00 .00 .00 .00
AC-FT .2 2040 2290 2130 173 366 1980 1520 8.2 .00 .00 .00
11014000 JAMUL CREEK NEAR JAMUL, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 5.78 8.04 9.48 17.4 16.6 28.9 17.4 13.8 14.0 11.6 9.87 7.88
MAX 40.2 45.6 62.5 415 130 254 101 49.1 49.6 51.7 44.4 37.4
(WY) 1948 1946 1946 1993 1993 1995 1958 1954 1952 1995 1995 1947
MIN .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000
(WY) 1950 1951 1951 1958 1961 1959 1955 1956 1953 1950 1949 1949
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1940 - 1996
ANNUAL TOTAL 22329.67 5290.93
ANNUAL MEAN 61.2 14.5 13.2
HIGHEST ANNUAL MEAN 55.2 1995
LOWEST ANNUAL MEAN .000 1961
HIGHEST DAILY MEAN 2150 Mar 6 39 Dec 20 2320 Jan 16 1993
LOWEST DAILY MEAN .00 Jan 1 .00 Oct 3 .00 Jul 17 1949
ANNUAL SEVEN-DAY MINIMUM .00 Oct 3 .00 Oct 3 .00 Jul 17 1949
INSTANTANEOUS PEAK FLOW 46 Dec 20 5870 Mar 5 1995
INSTANTANEOUS PEAK STAGE 2.41 Dec 20 7.59 Mar 5 1995
ANNUAL RUNOFF (AC-FT) 44290 10490 9540
10 PERCENT EXCEEDS 103 36 37
50 PERCENT EXCEEDS 38 1.7 .20
90 PERCENT EXCEEDS .11 .00 .00
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