LOCATION.-- Lat 41°49'21", long 88°10'24" (NAD of 1927), in SW1/4NE1/4 sec.35, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on right bank 400 ft upstream from Warrenville Forest Preserve Dam in Warrenville, 0.6 mi downstream from Spring Brook, and at mile 38.9. |
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DRAINAGE AREA.-- 90.4 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1968 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1977-91. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder, phone telemeter, crest-stage gage and masonry dam. Datum of gage is 688.59 ft above NGVD of 1929 (Illinois Department of Transportation bench mark). |
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REMARKS.-- Flow slightly regulated by sewage- treatment plants upstream. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,470 ft3/s, July 18, 1996, gage height, 6.41 ft; minimum daily discharge, 7.8 ft3/s, Sept. 14, 1971, Oct. 26, 1972. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of Oct. 11, 1954, reached a stage of 5.54 ft, from floodmark, discharge not determined. |
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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 | 46 | 41 | 34 | 35 | 35 | 30 | 60 | 1050 | 90 | 38 | 71 | 45 |
2 | 79 | 43 | 37 | 34 | 36 | 30 | 54 | 1240 | 73 | 37 | 145 | 51 |
3 | 73 | 42 | 36 | 33 | 46 | 32 | 49 | 601 | 82 | 36 | 101 | 42 |
4 | 104 | 43 | 35 | 32 | 45 | 32 | 257 | 354 | 75 | 42 | 142 | 38 |
5 | 133 | 46 | 36 | 33 | 35 | 33 | 467 | 873 | 68 | 75 | 84 | 38 |
6 | 83 | 47 | 36 | 35 | 33 | 32 | 255 | 704 | 64 | 96 | 65 | 35 |
7 | 67 | 43 | 36 | 33 | 31 | 33 | 178 | 359 | 63 | 101 | 124 | 34 |
8 | 56 | 43 | 37 | 33 | 27 | 34 | 160 | 264 | 109 | 94 | 77 | 35 |
9 | 48 | 42 | 38 | 33 | 30 | 36 | 135 | 832 | 168 | 110 | 53 | 36 |
10 | 44 | 46 | 37 | 33 | 30 | 35 | 157 | 925 | 104 | 103 | 54 | 37 |
11 | 43 | 49 | 38 | 29 | 28 | 35 | 130 | 640 | 83 | 72 | 48 | 38 |
12 | 41 | 50 | 38 | 31 | 26 | 55 | 107 | 407 | 71 | 53 | 48 | 38 |
13 | 41 | 47 | 35 | 32 | 27 | 95 | 91 | 296 | 65 | 46 | 45 | 38 |
14 | 42 | 47 | 34 | 31 | 29 | 67 | 84 | 247 | 57 | 42 | 40 | 70 |
15 | 43 | 54 | 35 | 29 | 28 | 66 | 77 | 328 | 56 | 151 | 42 | 73 |
16 | 40 | 52 | 37 | e29 | 27 | 69 | 71 | 222 | 52 | 119 | 40 | 54 |
17 | 41 | 50 | 36 | e28 | 29 | 70 | 67 | 170 | 48 | 86 | 41 | 46 |
18 | 45 | 49 | 80 | e28 | 29 | 62 | 61 | 145 | 47 | 176 | 38 | 41 |
19 | 43 | 61 | 136 | e29 | 28 | 59 | 59 | 128 | 76 | 92 | 36 | 38 |
20 | 41 | 55 | 77 | e29 | 31 | 89 | 64 | 130 | 57 | 66 | 35 | 39 |
21 | 41 | 44 | 57 | e28 | 34 | 88 | 61 | 109 | 48 | 144 | 36 | 39 |
22 | 40 | 45 | 46 | e26 | 33 | 70 | 58 | 99 | 45 | 98 | 34 | 44 |
23 | 41 | 43 | 40 | e28 | 31 | 59 | 53 | 90 | 45 | 66 | 34 | 45 |
24 | 41 | 41 | 38 | e29 | 32 | 54 | 51 | 82 | 43 | 47 | 33 | 43 |
25 | 53 | 42 | 36 | e29 | 31 | 64 | 48 | 76 | 41 | 39 | 35 | 42 |
26 | 54 | 41 | 33 | 29 | 32 | 65 | 44 | 72 | 45 | 33 | 36 | 46 |
27 | 47 | 41 | 33 | 28 | 31 | 55 | 43 | 72 | 43 | 31 | 37 | 75 |
28 | 46 | 39 | 34 | 30 | 30 | 70 | 47 | 75 | 41 | 38 | 36 | 49 |
29 | 45 | 39 | 33 | 30 | --- | 121 | 47 | 89 | 38 | 38 | 35 | 41 |
30 | 42 | 36 | 34 | 30 | --- | 82 | 154 | 85 | 38 | 33 | 33 | 36 |
31 | 42 | --- | 35 | 31 | --- | 67 | --- | 118 | --- | 31 | 32 | --- |
TOTAL | 1645 | 1361 | 1327 | 947 | 884 | 1789 | 3189 | 10882 | 1935 | 2233 | 1710 | 1326 |
MEAN | 53.1 | 45.4 | 42.8 | 30.5 | 31.6 | 57.7 | 106 | 351 | 64.5 | 72.0 | 55.2 | 44.2 |
MAX | 133 | 61 | 136 | 35 | 46 | 121 | 467 | 1240 | 168 | 176 | 145 | 75 |
MIN | 40 | 36 | 33 | 26 | 26 | 30 | 43 | 72 | 38 | 31 | 32 | 34 |
CFSM | 0.59 | 0.50 | 0.47 | 0.34 | 0.35 | 0.64 | 1.18 | 3.88 | 0.71 | 0.80 | 0.61 | 0.49 |
IN. | 0.68 | 0.56 | 0.55 | 0.39 | 0.36 | 0.74 | 1.31 | 4.48 | 0.80 | 0.92 | 0.70 | 0.55 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2003, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 71.4 | 91.6 | 94.2 | 85.1 | 114 | 153 | 182 | 146 | 114 | 77.1 | 89.2 | 76.6 |
MAX | 366 | 276 | 354 | 250 | 374 | 588 | 396 | 351 | 300 | 283 | 512 | 261 |
(WY) | 2002 | 1986 | 1983 | 1999 | 1997 | 1979 | 1983 | 2003 | 1996 | 1996 | 1987 | 1972 |
MIN | 12.6 | 16.5 | 15.1 | 12.6 | 21.7 | 56.8 | 42.1 | 39.6 | 27.0 | 18.5 | 17.8 | 14.8 |
(WY) | 1972 | 1977 | 1977 | 1977 | 1972 | 1969 | 1986 | 1988 | 1971 | 1971 | 1971 | 1971 |
SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1969 - 2003 | |||
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ANNUAL TOTAL | 41238 | 29228 | ||||
ANNUAL MEAN | 113 | 80.1 | 108 | |||
HIGHEST ANNUAL MEAN | 162 | 1993 | ||||
LOWEST ANNUAL MEAN | 35.1 | 1977 | ||||
HIGHEST DAILY MEAN | 1310 | Jun 5 | 1240 | May 2 | 2880 | Aug 15 1987 |
LOWEST DAILY MEAN | 30 | A | 26 | B | 7.8 | C |
ANNUAL SEVEN-DAY MINIMUM | 32 | Jul 20 | 28 | Feb 11 | 10 | Oct 20 1971 |
MAXIMUM PEAK FLOW | 1460 | May 2 | 3470 | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 3.93 | May 2 | 6.41 | Jul 18 1996 | ||
INSTANTANEOUS LOW FLOW | 17 | Feb 8 | ||||
ANNUAL RUNOFF (CFSM) | 1.25 | 0.89 | 1.19 | |||
ANNUAL RUNOFF (INCHES) | 16.97 | 12.03 | 16.19 | |||
10 PERCENT EXCEEDS | 213 | 129 | 225 | |||
50 PERCENT EXCEEDS | 63 | 44 | 61 | |||
90 PERCENT EXCEEDS | 37 | 31 | 27 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |