11169500 SARATOGA CREEK AT SARATOGA, CA
LOCATION.-Lat 37°15'16", long 122°02'18", in Quito Grant, Santa Clara County, Hydrologic Unit 18050003,
on right bank, on upstream side of private road bridge, 0.5 mi southwest of Saratoga, and 0.7 mi downstream from
diversion dam.
DRAINAGE AREA.-9.22 mi2.
PERIOD OF RECORD.-October 1933 to current year. Prior to October 1951, published as Campbell Creek at Saratoga.
CHEMICAL DATA: Water years 1972 to December 1972.
REVISED RECORDS.-WSP 1445: 1940, 1952(M). WSP 1929: Drainage area.
GAGE.-Water-stage recorder, crest-stage gage, and concrete control. Elevation of gage is 500 ft above sea level,
from topographic map. Prior to Dec. 6, 1968, at site 40 ft downstream at different datum.
REMARKS.-Records fair except for estimated daily discharges, which are poor. Water is diverted for municipal use
by San Jose Water Works at diversion dam upstream from station. Low flows partially regulated by Lake McKenzie 8
mi upstream, usable capacity, 184 acre-ft.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,730 ft3/s, Dec. 22, 1955, from rating curve
extended above 510 ft3/s on basis of slope-area measurement of peak flow, site and datum then in use.
Maximum gage height, 7.80 ft, Feb. 3, 1998; no flow at times.
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 110 ft3/s, or maximum:
Discharge Gage height Discharge Gage height
Date Time (ft3/s) (ft) Date Time (ft3/s) (ft)
Nov. 30 1045 138 3.64 Feb. 9 0545 383 4.47
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 2.2 2.1 14 1.3 7.2 7.8 14 1.9 1.2 1.0 e.88 e.84
2 2.3 2.2 2.7 1.6 5.7 5.3 11 1.7 1.4 1.1 e.88 e.85
3 2.2 2.2 4.0 1.6 3.8 6.2 7.2 2.6 1.3 .99 e.91 e.85
4 2.1 2.3 2.3 1.5 2.9 6.1 5.7 3.5 4.0 .96 e.95 e.86
5 2.1 2.4 2.3 2.0 3.0 4.3 18 2.7 1.2 .95 e.97 e.87
6 2.0 2.6 3.7 1.1 11 3.7 17 2.3 1.1 .92 e.94 e.88
7 2.0 6.3 e.91 1.2 57 3.3 11 1.7 1.2 .91 e.91 e.87
8 2.1 3.3 e.87 1.6 52 10 22 1.5 1.1 1.1 e.88 e.86
9 2.1 3.0 e.61 1.2 179 15 15 1.4 1.0 .82 e.88 e.85
10 2.2 2.9 e.97 1.2 67 6.3 13 1.6 .99 .75 e.90 e.85
11 2.1 3.1 e.61 1.1 38 5.8 38 5.0 1.6 .78 e.94 e.86
12 2.2 3.1 e.61 1.0 29 5.2 25 5.6 1.2 .92 e.96 e.87
13 2.2 3.0 e1.4 1.0 21 4.5 21 1.6 1.4 .76 e.92 e.88
14 2.3 3.0 1.8 1.0 17 9.4 18 1.7 1.0 1.3 e.89 e.89
15 2.2 3.0 1.4 1.0 13 13 15 1.3 1.1 1.1 e.86 e.91
16 2.2 3.1 e1.2 1.5 14 7.4 14 1.3 .99 1.1 e.90 e.93
17 2.1 3.1 1.7 1.2 18 6.4 12 1.5 .92 1.2 e.94 e1.0
18 2.1 3.1 1.8 8.0 15 5.6 10 1.4 1.1 1.2 e.94 1.1
19 2.1 3.0 1.8 18 11 8.0 9.2 1.6 1.0 1.2 e.90 1.1
20 2.1 2.9 3.0 47 15 6.1 8.4 1.8 1.0 1.2 e.88 1.1
21 1.8 3.2 3.5 14 23 5.8 7.4 1.6 .99 1.2 e.85 1.1
22 1.8 3.6 3.4 6.6 16 5.2 6.8 1.5 1.0 1.1 e.84 1.1
23 1.9 5.7 3.3 30 16 9.2 6.3 4.1 1.1 1.0 e.85 1.1
24 3.5 3.8 3.3 13 16 14 5.7 2.1 1.1 1.0 e.87 1.1
25 2.5 1.8 3.1 6.0 18 40 4.7 1.2 .98 1.0 e.90 1.0
26 2.2 1.6 3.1 20 9.7 26 4.5 1.3 1.0 .94 e.89 .96
27 2.1 2.1 2.4 12 8.1 19 3.5 1.3 .90 .91 e.87 .92
28 2.1 3.1 1.4 6.2 7.0 15 3.7 2.8 .89 .86 e.85 .87
29 2.2 2.1 1.6 4.1 --- 14 3.8 1.7 .89 .80 e.84 .85
30 2.2 46 1.6 3.0 --- 14 2.2 2.4 1.2 e.84 e.84 .79
31 1.9 --- 1.9 25 --- 18 --- 1.6 --- e.87 e.84 ---
TOTAL 67.1 132.7 76.28 235.0 693.4 319.6 353.1 65.3 35.85 30.78 27.67 28.01
MEAN 2.16 4.42 2.46 7.58 24.8 10.3 11.8 2.11 1.19 .99 .89 .93
MAX 3.5 46 14 47 179 40 38 5.6 4.0 1.3 .97 1.1
MIN 1.8 1.6 .61 1.0 2.9 3.3 2.2 1.2 .89 .75 .84 .79
AC-FT 133 263 151 466 1380 634 700 130 71 61 55 56
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1934 - 1999, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN .91 2.75 9.20 23.0 31.1 23.2 13.6 3.90 1.36 .58 .38 .40
MAX 17.5 25.5 83.2 104 157 114 131 35.7 6.97 2.95 1.66 2.42
(WY) 1963 1951 1956 1997 1998 1983 1982 1983 1941 1941 1998 1998
MIN .000 .037 .25 .31 .086 .32 .24 .065 .000 .000 .000 .000
(WY) 1950 1949 1957 1976 1964 1972 1972 1959 1950 1947 1934 1934
SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1934 - 1999
ANNUAL TOTAL 8188.81 2064.79
ANNUAL MEAN 22.4 5.66 9.09
HIGHEST ANNUAL MEAN 32.5 1983
LOWEST ANNUAL MEAN .54 1977
HIGHEST DAILY MEAN 699 Feb 3 179 Feb 9 1260 Feb 27
1940
LOWEST DAILY MEAN .61 Dec 9 .61 Dec 9 .00 Oct 1
1933
ANNUAL SEVEN-DAY MINIMUM .85 Dec 7 .84 Aug 28 .00 Oct 1
1933
INSTANTANEOUS PEAK FLOW 383 Feb 9 2730 Dec 22
1955
INSTANTANEOUS PEAK STAGE 4.47 Feb 9 7.80 Feb 3
1998
ANNUAL RUNOFF (AC-FT) 16240 4100 6590
10 PERCENT EXCEEDS 59 15 20
50 PERCENT EXCEEDS 3.3 2.0 .90
90 PERCENT EXCEEDS 1.6 .88 .00
USGS Water Resources of California
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