LOCATION.-- Lat 41°51'23", long 88°12'14" (NAD of 1983), in NW1/4NW1/4 sec.22, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on left downstream side of bridge at intersection of Wilson Street and Joliet Road, 0.5 mi south of West Chicago, and at mile 0.5. |
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DRAINAGE AREA.-- 18.1 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: November 1985 to current year. |
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STAGE: Water years 1994 to current year. |
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PARTIAL RECORD: Annual maximum, water years 1961-80. |
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PRECIPITATION: April 1986 to current year. |
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REVISED RECORDS.-- WDR IL-77-1: 1961-76(M). |
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GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 700.00 ft above NGVD of 1929 (699.75 ft NAVD 1988). Prior to November 8, 1985 at datum 5.44 ft higher. |
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REMARKS.-- Collection, computation and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,980 ft3/s, July 18, 1996, gage height, 9.24 ft; no flow, Aug. 6, 7, 2005. |
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PRECIPITATION: Maximum daily total, 6.88 in., July 17, 1996, but may have been greater during periods of missing record. |
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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 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 0.96 | 19 | 21 | 6.3 | e3.6 | 19 | 14 | 6.3 | 1.5 | 0.58 | 0.20 | 0.10 |
2 | 2.9 | 23 | 18 | 16 | e3.5 | 16 | 20 | 4.4 | 1.0 | 0.61 | 0.10 | 0.73 |
3 | 2.7 | 17 | 16 | 18 | 3.7 | 18 | 16 | 4.7 | 1.5 | 0.35 | 0.09 | 0.79 |
4 | 1.2 | 27 | 14 | 19 | 5.5 | 21 | 13 | 3.4 | 5.3 | 0.61 | 0.08 | 0.35 |
5 | 0.43 | 17 | 14 | 15 | 10 | 16 | 11 | 2.9 | 5.5 | 0.54 | 0.02 | 0.09 |
6 | 0.44 | 13 | 18 | 13 | 19 | 13 | 9.7 | 4.8 | 3.8 | 0.31 | 0.00 | 0.05 |
7 | 0.44 | 11 | 54 | 11 | 42 | 15 | 10 | 3.7 | 4.9 | 0.27 | 0.00 | 1.8 |
8 | 17 | 8.6 | 49 | 8.3 | 39 | 14 | 7.1 | 2.3 | 2.9 | 0.11 | 0.61 | 0.79 |
9 | 17 | 7.2 | 40 | 7.7 | 30 | 12 | 7.1 | 4.2 | 2.8 | 0.08 | 0.47 | 0.36 |
10 | 9.5 | 5.7 | e32 | 7.8 | 25 | 11 | 5.6 | 4.0 | 2.6 | 0.08 | 0.09 | 0.55 |
11 | 4.4 | 3.5 | 23 | 7.9 | 21 | 11 | 6.1 | 7.1 | 1.1 | 0.08 | 0.17 | 0.18 |
12 | 2.8 | 2.0 | 20 | 38 | 18 | 8.8 | 32 | 9.9 | 0.60 | 0.09 | 5.6 | 0.06 |
13 | 1.9 | 1.7 | 15 | 155 | 26 | 6.6 | 38 | 11 | 0.54 | 0.10 | 7.6 | 0.07 |
14 | 1.1 | 2.8 | 11 | 92 | 75 | 6.1 | 22 | 6.4 | 0.52 | 0.11 | 4.1 | 0.38 |
15 | 3.5 | 1.8 | 9.0 | 57 | 60 | 10 | 17 | 3.5 | 1.7 | 0.11 | 2.4 | 0.58 |
16 | 0.35 | 1.5 | 7.9 | 40 | 53 | 12 | 13 | 2.2 | 0.79 | 0.10 | 1.0 | 1.5 |
17 | 0.58 | 1.4 | e5.0 | 30 | 41 | 5.7 | 11 | 2.8 | 0.39 | 0.08 | 0.32 | e2.0 |
18 | 2.3 | 4.0 | e5.1 | 24 | 31 | 6.1 | 7.7 | 1.9 | 0.52 | 0.07 | 3.1 | e0.18 |
19 | 1.6 | 9.6 | e4.1 | 19 | 25 | 5.7 | 7.8 | 40 | 0.42 | 0.04 | 3.0 | e0.17 |
20 | 1.1 | 13 | 3.0 | e12 | 27 | 7.4 | 7.3 | 35 | 0.36 | 5.4 | 37 | e2.2 |
21 | 1.8 | 7.4 | e2.2 | e10 | 28 | 6.1 | 6.5 | 22 | 0.26 | 3.7 | 17 | e0.20 |
22 | 0.46 | 4.6 | e2.0 | e9.0 | 23 | 7.8 | 19 | 13 | 0.21 | 7.9 | 10 | e0.10 |
23 | 22 | 4.6 | e1.9 | e8.0 | 21 | 8.3 | 23 | 6.8 | 0.22 | 4.2 | 6.1 | e0.30 |
24 | 16 | 4.3 | 1.8 | 7.4 | 18 | 8.2 | 14 | 5.6 | 0.19 | 1.0 | 2.3 | e1.0 |
25 | 11 | 8.0 | 1.8 | 6.9 | 16 | 15 | 10 | 4.9 | 1.1 | 0.34 | 1.2 | e4.0 |
26 | 6.4 | e10 | e1.7 | e5.0 | 15 | 13 | 9.0 | 4.8 | 2.3 | 4.9 | 0.60 | e18 |
27 | 4.1 | e38 | e1.7 | e4.2 | 14 | 9.2 | 8.3 | 5.2 | 0.66 | 10 | 1.0 | e2.0 |
28 | 4.1 | e30 | 1.7 | e4.3 | 22 | 9.3 | 7.0 | 3.2 | 0.20 | 5.5 | 0.62 | e1.1 |
29 | 11 | e20 | 2.3 | e4.0 | --- | 9.1 | 7.6 | 1.9 | 0.56 | 1.8 | 0.29 | e3.0 |
30 | 14 | e19 | 3.6 | e4.0 | --- | 11 | 7.4 | 1.6 | 0.56 | 0.55 | 0.21 | e8.0 |
31 | 9.3 | --- | e5.0 | e3.7 | --- | 16 | --- | 2.2 | --- | 0.29 | 0.12 | --- |
TOTAL | 172.36 | 335.7 | 404.8 | 663.5 | 715.3 | 347.4 | 387.2 | 231.7 | 45.00 | 49.90 | 105.39 | 50.63 |
MEAN | 5.56 | 11.2 | 13.1 | 21.4 | 25.5 | 11.2 | 12.9 | 7.47 | 1.50 | 1.61 | 3.40 | 1.69 |
MAX | 22 | 38 | 54 | 155 | 75 | 21 | 38 | 40 | 5.5 | 10 | 37 | 18 |
MIN | 0.35 | 1.4 | 1.7 | 3.7 | 3.5 | 5.7 | 5.6 | 1.6 | 0.19 | 0.04 | 0.00 | 0.05 |
CFSM | 0.31 | 0.62 | 0.72 | 1.18 | 1.41 | 0.62 | 0.71 | 0.41 | 0.08 | 0.09 | 0.19 | 0.09 |
IN. | 0.35 | 0.69 | 0.83 | 1.36 | 1.47 | 0.71 | 0.80 | 0.48 | 0.09 | 0.10 | 0.22 | 0.10 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 10.5 | 14.3 | 12.3 | 13.2 | 19.0 | 20.7 | 23.5 | 22.5 | 18.4 | 11.6 | 10.6 | 7.35 |
MAX | 55.7 | 36.0 | 40.5 | 36.9 | 57.6 | 44.4 | 62.9 | 48.2 | 48.3 | 80.8 | 82.1 | 29.1 |
(WY) | 2002 | 1996 | 1988 | 1993 | 1997 | 1990 | 1993 | 2003 | 1996 | 1996 | 1987 | 1987 |
MIN | 1.46 | 0.90 | 0.91 | 0.57 | 0.56 | 2.68 | 6.09 | 3.99 | 1.50 | 1.61 | 1.51 | 0.59 |
(WY) | 2004 | 2000 | 2003 | 2003 | 2003 | 2003 | 1989 | 1989 | 2005 | 2005 | 1986 | 2004 |
SUMMARY STATISTICS | FOR 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1986 - 2005 | |||
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ANNUAL TOTAL | 4499.56 | 3508.88 | ||||
ANNUAL MEAN | 12.3 | 9.61 | 15.5 | |||
HIGHEST ANNUAL MEAN | 24.0 | 1993 | ||||
LOWEST ANNUAL MEAN | 7.17 | 2003 | ||||
HIGHEST DAILY MEAN | 134 | Jun 12 | 155 | Jan 13 | 1210 | Jul 18 1996 |
LOWEST DAILY MEAN | 0.31 | A | 0.00 | Aug 6,7 | 0.00 | B |
ANNUAL SEVEN-DAY MINIMUM | 0.32 | Sep 24 | 0.07 | Aug 1 | 0.07 | Aug 1 2005 |
MAXIMUM PEAK FLOW | 184 | Jan 13 | 1980 | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 5.85 | Jan 13 | 9.24 | Jul 18 1996 | ||
ANNUAL RUNOFF (CFSM) | 0.679 | 0.531 | 0.856 | |||
ANNUAL RUNOFF (INCHES) | 9.25 | 7.21 | 11.63 | |||
10 PERCENT EXCEEDS | 31 | 22 | 37 | |||
50 PERCENT EXCEEDS | 4.9 | 5.1 | 7.3 | |||
90 PERCENT EXCEEDS | 0.76 | 0.22 | 0.97 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |