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 1994-2002. |
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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, 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, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 2.4 | 3.6 | 14 | e1.9 | 18 | 6.1 | 7.3 | 10 | 3.0 | 1.5 | 0.62 | 0.25 |
2 | 1.7 | 7.8 | 7.0 | e1.8 | 21 | e7.5 | 78 | 8.5 | 2.7 | 1.3 | 0.53 | 1.0 |
3 | 1.2 | 6.4 | 4.7 | e1.7 | 8.7 | e11 | 37 | 6.7 | 2.6 | 0.99 | 0.34 | 4.7 |
4 | 1.4 | 4.1 | 3.7 | e1.7 | 7.7 | e9.0 | 16 | 5.7 | 9.1 | 1.1 | 0.31 | e2.4 |
5 | 108 | 3.6 | 3.3 | 1.7 | 6.6 | 8.0 | 10 | 4.9 | 14 | 1.7 | 19 | 1.3 |
6 | 23 | 3.4 | 3.0 | 1.7 | 5.0 | 12 | 7.8 | 15 | 6.2 | 1.1 | 7.2 | 0.94 |
7 | 7.2 | 3.3 | 2.7 | 1.7 | 4.1 | 54 | 15 | 14 | 4.0 | 0.96 | 2.5 | 0.75 |
8 | 4.5 | 3.1 | 2.5 | 1.7 | 4.5 | 144 | 140 | 69 | 2.9 | 0.72 | 1.6 | 0.59 |
9 | 3.4 | 2.6 | 2.2 | 1.8 | 11 | 203 | 168 | 205 | 2.6 | 35 | 0.92 | 0.56 |
10 | 2.9 | 2.5 | 2.1 | 1.8 | 61 | 72 | 51 | 52 | 7.6 | 15 | 0.72 | 0.44 |
11 | 2.9 | 2.3 | 2.0 | 1.7 | 34 | 27 | 23 | 168 | 33 | 4.6 | 0.49 | 1.2 |
12 | 59 | 2.2 | 3.1 | 1.7 | 17 | 16 | 15 | 440 | 10 | 2.3 | 0.34 | 1.1 |
13 | 96 | 2.1 | 5.6 | 1.7 | 15 | 12 | 10 | 94 | 5.2 | 1.6 | 0.31 | 0.70 |
14 | 205 | 2.5 | 7.3 | 1.7 | 10 | 6.9 | 8.0 | 41 | 6.1 | 1.3 | 0.51 | 0.46 |
15 | 56 | 3.7 | 9.2 | 1.9 | 9.3 | 7.7 | 6.6 | 21 | 6.7 | 0.96 | 0.37 | 0.38 |
16 | 24 | 2.6 | 5.6 | 1.9 | 9.0 | 6.9 | 5.6 | 39 | 4.1 | 0.85 | 0.47 | 0.29 |
17 | 13 | 2.2 | 14 | e2.0 | 7.4 | 6.2 | 12 | 43 | 2.8 | 0.90 | 1.7 | 0.22 |
18 | 8.2 | 2.2 | 13 | e2.0 | 5.9 | 5.7 | 9.0 | 19 | 2.5 | 0.65 | 0.95 | 7.3 |
19 | 6.1 | 2.5 | 7.2 | e1.9 | 9.9 | 5.2 | 6.1 | 13 | 2.0 | 0.59 | 2.3 | 5.7 |
20 | 4.7 | 4.2 | 5.9 | e1.8 | 44 | 5.2 | 107 | 10 | 1.7 | 0.57 | 3.5 | 9.8 |
21 | 5.0 | 3.2 | 4.6 | e1.8 | 26 | 5.1 | 53 | 7.1 | 1.4 | 0.73 | 1.6 | 10 |
22 | 4.6 | 2.2 | 4.2 | e2.5 | 14 | 4.4 | 40 | 5.2 | 1.3 | 0.99 | 10 | 6.2 |
23 | 55 | 1.7 | 6.5 | 3.6 | 9.0 | 4.1 | 19 | 4.3 | 1.3 | 0.59 | 11 | 4.8 |
24 | 62 | 1.9 | 5.0 | 3.9 | 7.0 | 4.1 | 15 | 16 | 1.2 | 0.39 | 6.0 | 2.5 |
25 | 52 | 5.9 | 4.4 | 3.3 | 6.0 | 3.7 | 21 | 12 | 1.7 | 0.31 | 2.8 | 1.5 |
26 | 15 | 5.7 | 3.5 | 2.6 | 7.0 | 4.3 | 11 | 8.2 | 6.0 | 0.35 | 1.6 | 1.1 |
27 | 8.8 | 4.6 | 3.0 | 2.5 | 7.3 | 4.1 | 49 | 5.6 | 12 | 0.84 | 1.0 | 1.1 |
28 | 6.7 | 4.1 | 2.7 | 2.6 | 6.4 | 4.0 | 77 | 5.1 | 5.5 | 1.6 | 0.71 | 0.82 |
29 | 4.8 | 5.0 | 2.4 | 2.3 | --- | 13 | 26 | 5.3 | 3.1 | 1.1 | 0.52 | 0.80 |
30 | 4.0 | 27 | 2.2 | 3.2 | --- | 23 | 15 | 4.1 | 2.3 | 1.2 | 0.60 | 2.3 |
31 | 3.6 | --- | e2.1 | 11 | --- | 9.4 | --- | 3.5 | --- | 0.90 | 0.33 | --- |
TOTAL | 852.1 | 128.2 | 158.7 | 75.1 | 391.8 | 704.6 | 1058.4 | 1355.2 | 164.6 | 82.69 | 80.84 | 71.20 |
MEAN | 27.49 | 4.273 | 5.119 | 2.423 | 13.99 | 22.73 | 35.28 | 43.72 | 5.487 | 2.667 | 2.608 | 2.373 |
MAX | 205 | 27 | 14 | 11 | 61 | 203 | 168 | 440 | 33 | 35 | 19 | 10 |
MIN | 1.2 | 1.7 | 2.0 | 1.7 | 4.1 | 3.7 | 5.6 | 3.5 | 1.2 | 0.31 | 0.31 | 0.22 |
CFSM | 2.45 | 0.38 | 0.46 | 0.22 | 1.25 | 2.03 | 3.15 | 3.90 | 0.49 | 0.24 | 0.23 | 0.21 |
IN. | 2.83 | 0.43 | 0.53 | 0.25 | 1.30 | 2.34 | 3.52 | 4.50 | 0.55 | 0.27 | 0.27 | 0.24 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 6.638 | 9.168 | 9.811 | 10.86 | 13.80 | 21.00 | 21.89 | 15.25 | 11.72 | 6.407 | 5.075 | 5.358 |
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 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1951 - 2002 | |||
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ANNUAL TOTAL | 5377.98 | 5123.43 | ||||
ANNUAL MEAN | 14.73 | 14.04 | 11.37 | |||
HIGHEST ANNUAL MEAN | 22.7 | 1993 | ||||
LOWEST ANNUAL MEAN | 2.27 | 1963 | ||||
HIGHEST DAILY MEAN | 364 | Feb 9 | 440 | May 12 | 891 | Oct 10 1954 |
LOWEST DAILY MEAN | 0.49 | Jul 17 | 0.22 | Sep 17 | 0.00 | A |
ANNUAL SEVEN-DAY MINIMUM | 0.66 | Jul 11 | 0.46 | Aug 10 | 0.00 | Oct 1 1952 |
MAXIMUM PEAK FLOW | 830 | May 12 | 2010 B,C | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 8.55 | May 12 | 10.30 D | Oct 10 1954 | ||
INSTANTANEOUS LOW FLOW | 0.21 | Sep 17,18 | ||||
ANNUAL RUNOFF (CFSM) | 1.32 | 1.25 | 1.02 | |||
ANNUAL RUNOFF (INCHES) | 17.86 | 17.02 | 13.80 | |||
10 PERCENT EXCEEDS | 42 | 29 | 25 | |||
50 PERCENT EXCEEDS | 4.6 | 4.3 | 2.7 | |||
90 PERCENT EXCEEDS | 1.8 | 0.83 | 0.20 |
B - From rating curve extended above 800 ft3/s on basis of indirect measurement |
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of flow through culvert. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |