LOCATION.-- Lat 41°38'48", long 87°45'59" (NAD of 1927), in SW1/4SE1/4 sec.32, T.37 N., R.13 E., Cook County, Hydrologic Unit 07120003, on left bank at downstream side of bridge on 135th Street, 1.5 mi west of State Highway 50, 3 mi southeast of Palos Park, and at mile 1.8. |
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DRAINAGE AREA.-- 11.2 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: July 1951 to current year. Prior to October 1952, records published with those for streams in the St. Lawrence River basin (WSP 1237). |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000. |
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BIOLOGICAL |
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BENTHIC MACROINVERTEBRATES: Water year 2000. |
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FISH: Water year 2001. |
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HABITAT: Water year 2000. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-81-2: 1955(M), 1957(M), 1970(M), 1978(M). |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 607.40 ft above NGVD of 1929. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,010 ft3/s, July 18, 1996, from rating curve extended above 800 ft3/s on basis of indirect measurement of flow through culvert, gage height, 10.25 ft; maximum gage height, 10.30 ft, discharge, 1,930 ft3/s, Oct. 10, 1954; no flow at times in most years. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. |
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 1.8 | 1.6 | 2.9 | 2.5 | e0.40 | e1.1 | e5.8 | e54 | e1.1 | e1.8 | e32 | 118 |
2 | 2.9 | 1.1 | 2.3 | 1.9 | e0.50 | e1.0 | e5.0 | e9.4 | e4.4 | e1.4 | e47 | 51 |
3 | 3.6 | 0.81 | 2.1 | 1.5 | e0.70 | e1.2 | e6.9 | e6.2 | e24 | e1.2 | e5.1 | 14 |
4 | 30 | 0.89 | 2.1 | 1.3 | e1.2 | e1.6 | e90 | e11 | e1.7 | e1.0 | e22 | 7.7 |
5 | 27 | 0.94 | 1.9 | 1.2 | e0.95 | e1.8 | e62 | e84 | e2.2 | e67 | e12 | 4.9 |
6 | 6.7 | 3.4 | 1.7 | 1.4 | e0.75 | e2.0 | e30 | e7.5 | e8.4 | e16 | e5.9 | 3.7 |
7 | 3.1 | 4.1 | 1.3 | 1.5 | e0.60 | e2.2 | e18 | e8.4 | e4.8 | e42 | e11 | 3.0 |
8 | 1.6 | 4.3 | 1.3 | 1.4 | e0.50 | e10 | e18 | e6.0 | e2.7 | e19 | e3.5 | 2.6 |
9 | 1.0 | 4.5 | 0.99 | 1.3 | e0.44 | e23 | e15 | e135 | e4.4 | e25 | e2.5 | 2.4 |
10 | 0.71 | 3.8 | 3.1 | 1.1 | e0.40 | e13 | e9.1 | e19 | e7.4 | e17 | e2.0 | e2.0 |
11 | 0.57 | 7.7 | 1.5 | e0.95 | e0.41 | e12 | e4.7 | e56 | e7.1 | e12 | e23 | 1.6 |
12 | 0.62 | 6.0 | 1.0 | e0.84 | e0.45 | e23 | e4.8 | e16 | e2.4 | e9.1 | e27 | 1.5 |
13 | 1.8 | 4.6 | 1.00 | e0.73 | e0.50 | e36 | e4.5 | e14 | e1.7 | e2.3 | e15 | 2.5 |
14 | 1.4 | 4.3 | 1.1 | e0.64 | e0.45 | e18 | e4.0 | e10 | e1.3 | e1.5 | e8.0 | 15 |
15 | 0.81 | 11 | 1.1 | e0.57 | e0.40 | e10 | e4.9 | e7.0 | e1.0 | e82 | e4.1 | 9.1 |
16 | 0.53 | 10 | 0.95 | e0.51 | e0.37 | e8.5 | e11 | e5.0 | e0.80 | e16 | e2.5 | 4.3 |
17 | 0.40 | 6.2 | 0.77 | e0.46 | e0.35 | e9.5 | e9.0 | e4.0 | e0.73 | e13 | e3.0 | 2.7 |
18 | 0.30 | 4.4 | 28 | e0.42 | e0.34 | e8.4 | e3.3 | e3.0 | e0.65 | e58 | e2.2 | 2.0 |
19 | 0.36 | 4.1 | 31 | e0.39 | e0.40 | e10 | e3.5 | e2.6 | e22 | e7.6 | e1.9 | 1.6 |
20 | 0.55 | 6.4 | 9.9 | e0.36 | e0.52 | e22 | e9.3 | e33 | e4.0 | e7.0 | 1.9 | 1.2 |
21 | 0.51 | 4.9 | 5.3 | e0.34 | e4.0 | e17 | e4.0 | e6.4 | e2.2 | e184 | 1.6 | 0.96 |
22 | 0.42 | 12 | 3.6 | e0.32 | e4.8 | e5.2 | e3.0 | e4.5 | e1.3 | e20 | 1.5 | 1.9 |
23 | 0.38 | 8.2 | 2.4 | e0.31 | e2.8 | e5.3 | e2.0 | e3.6 | e1.0 | e6.0 | 1.2 | 2.5 |
24 | 0.30 | 4.9 | 2.0 | e0.30 | e2.2 | e5.6 | e2.2 | e3.0 | e1.2 | e3.0 | 1.1 | 2.9 |
25 | 0.58 | 3.5 | 1.9 | e0.30 | e1.8 | e9.3 | e1.7 | e2.3 | e1.1 | e1.5 | 1.0 | 4.6 |
26 | 1.9 | 3.1 | 2.0 | e0.30 | e1.5 | e7.3 | e1.3 | e2.0 | e12 | e1.0 | 0.79 | 4.5 |
27 | 1.6 | 2.8 | 1.8 | e0.30 | e1.4 | e5.1 | e1.2 | e3.5 | e4.3 | e141 | 1.2 | 14 |
28 | 1.2 | 3.0 | 1.6 | e0.31 | e1.2 | e12 | e1.3 | e5.0 | e1.2 | e128 | 1.4 | 5.6 |
29 | 1.1 | 2.7 | 1.5 | e0.32 | --- | e17 | e4.2 | e9.8 | e5.1 | e41 | 19 | 2.9 |
30 | 1.2 | 3.0 | 1.7 | e0.34 | --- | e2.5 | e37 | e3.3 | e2.4 | e14 | 12 | 1.9 |
31 | 1.9 | --- | 3.3 | e0.36 | --- | e5.3 | --- | e8.1 | --- | e17 | 10 | --- |
TOTAL | 96.84 | 138.24 | 123.11 | 24.47 | 30.33 | 305.9 | 376.7 | 542.6 | 134.58 | 956.4 | 282.39 | 292.56 |
MEAN | 3.12 | 4.61 | 3.97 | 0.79 | 1.08 | 9.87 | 12.6 | 17.5 | 4.49 | 30.9 | 9.11 | 9.75 |
MAX | 30 | 12 | 31 | 2.5 | 4.8 | 36 | 90 | 135 | 24 | 184 | 47 | 118 |
MIN | 0.30 | 0.81 | 0.77 | 0.30 | 0.34 | 1.0 | 1.2 | 2.0 | 0.65 | 1.0 | 0.79 | 0.96 |
CFSM | 0.28 | 0.41 | 0.35 | 0.07 | 0.10 | 0.88 | 1.12 | 1.56 | 0.40 | 2.75 | 0.81 | 0.87 |
IN. | 0.32 | 0.46 | 0.41 | 0.08 | 0.10 | 1.02 | 1.25 | 1.80 | 0.45 | 3.18 | 0.94 | 0.97 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2003, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 6.57 | 9.08 | 9.70 | 10.7 | 13.6 | 20.8 | 21.7 | 15.3 | 11.6 | 6.88 | 5.15 | 5.44 |
MAX | 87.0 | 46.2 | 57.7 | 43.1 | 69.8 | 90.2 | 50.7 | 43.7 | 56.9 | 58.5 | 28.3 | 38.2 |
(WY) | 1955 | 1991 | 1983 | 1999 | 1997 | 1979 | 1970 | 2002 | 2000 | 1996 | 1987 | 1993 |
MIN | 0.000 | 0.17 | 0.15 | 0.062 | 0.19 | 2.24 | 1.52 | 1.79 | 0.67 | 0.15 | 0.003 | 0.000 |
(WY) | 1953 | 1954 | 1964 | 1977 | 1963 | 1981 | 1963 | 1963 | 1965 | 1956 | 1964 | 1953 |
SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1951 - 2003 | |||
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ANNUAL TOTAL | 4342.62 | 3304.12 | ||||
ANNUAL MEAN | 11.9 | 9.05 | 11.3 | |||
HIGHEST ANNUAL MEAN | 22.7 | 1993 | ||||
LOWEST ANNUAL MEAN | 2.27 | 1963 | ||||
HIGHEST DAILY MEAN | 440 | May 12 | 184 A | Jul 21 | 891 | Oct 10 1954 |
LOWEST DAILY MEAN | 0.22 | Sep 17 | 0.30 | B | 0.00 | C |
ANNUAL SEVEN-DAY MINIMUM | 0.40 | Oct 18 | 0.31 D | Jan 22 | 0.00 | Oct 1 1952 |
MAXIMUM PEAK FLOW | 350 A | Jul 21 | 2010 E,F | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | unknown | 10.30 G | Oct 10 1954 | |||
INSTANTANEOUS LOW FLOW | 0.25 H | Oct 18, 19, 24 | ||||
ANNUAL RUNOFF (CFSM) | 1.06 | 0.81 | 1.01 | |||
ANNUAL RUNOFF (INCHES) | 14.42 | 10.97 | 13.74 | |||
10 PERCENT EXCEEDS | 23 | 19 | 25 | |||
50 PERCENT EXCEEDS | 3.3 | 2.8 | 2.7 | |||
90 PERCENT EXCEEDS | 0.60 | 0.51 | 0.20 |
B - Oct. 18, 24, and Jan. 24-27 (estimated due to backwater from ice). |
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E - From rating curve extended above 800 ft3/s on basis of indirect measurement of flow through culvert. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |