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 1994-2002. |
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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. |
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 | 71 | 107 | 186 | 61 | 95 | 85 | 100 | 102 | 55 | 44 | 33 | 55 |
2 | 66 | 98 | 132 | 59 | 95 | 89 | 125 | 158 | 46 | 42 | 30 | 62 |
3 | 62 | 89 | 109 | 58 | 89 | 102 | 109 | 117 | 51 | 41 | 30 | 92 |
4 | 67 | 85 | 95 | 57 | 85 | 95 | 94 | 90 | 562 | 38 | 35 | 67 |
5 | 290 | 81 | 88 | 56 | 77 | 85 | 90 | 77 | 1310 | 37 | 124 | 57 |
6 | 171 | 77 | 83 | 55 | 74 | 88 | 87 | 71 | 728 | 34 | 64 | 50 |
7 | 112 | 75 | 78 | 56 | 77 | 136 | 107 | 66 | 349 | 33 | 46 | 47 |
8 | 89 | 78 | 73 | 54 | 82 | 412 | 270 | 62 | 227 | 31 | 39 | 46 |
9 | 77 | 75 | 68 | 55 | 103 | 743 | 669 | 100 | 157 | 640 | 34 | 48 |
10 | 72 | 71 | 67 | 55 | 231 | 581 | 431 | 83 | 129 | 310 | 33 | 46 |
11 | 87 | 67 | 65 | 55 | 221 | 333 | 266 | 207 | 163 | 158 | 31 | 49 |
12 | 152 | 66 | 64 | 55 | 165 | 243 | 190 | 1270 | 147 | 100 | 32 | 48 |
13 | 614 | 66 | 178 | 56 | 135 | 196 | 152 | 1160 | 113 | 71 | 131 | 43 |
14 | 2020 | 81 | 142 | 58 | 115 | 164 | 128 | 524 | 169 | 57 | 506 | 42 |
15 | 1550 | 85 | 110 | 57 | 107 | 140 | 111 | 322 | 135 | 48 | 275 | 42 |
16 | 867 | 74 | 100 | 58 | 99 | 118 | 98 | 371 | 102 | 44 | 151 | 42 |
17 | 468 | 65 | 118 | 61 | 92 | 108 | 95 | 564 | 88 | 41 | 97 | 41 |
18 | 317 | 62 | 107 | 58 | 83 | 99 | 91 | 336 | 78 | 38 | 74 | 47 |
19 | 235 | 74 | 105 | 56 | 112 | 88 | 87 | 226 | 70 | 37 | 64 | 56 |
20 | 176 | 69 | 109 | 55 | 434 | 85 | 139 | 170 | 59 | 34 | 55 | 98 |
21 | 143 | 65 | 94 | 56 | 438 | 79 | 136 | 135 | 59 | 33 | 45 | 107 |
22 | 124 | 61 | 92 | 56 | 272 | 74 | 170 | 112 | 57 | 34 | 469 | 109 |
23 | 559 | 57 | 125 | 66 | 189 | 71 | 121 | 99 | 52 | 32 | 1020 | 91 |
24 | 798 | 88 | 107 | 69 | 147 | 69 | 114 | 100 | 50 | 30 | 548 | 65 |
25 | 784 | 166 | 89 | 64 | 123 | 66 | 144 | 110 | 55 | 30 | 263 | 52 |
26 | 446 | 129 | 80 | 64 | 110 | 66 | 104 | 97 | 63 | 31 | 177 | 47 |
27 | 278 | 106 | 77 | 66 | 102 | 66 | 121 | 76 | 52 | 41 | 129 | 45 |
28 | 213 | 95 | 74 | 67 | 93 | 63 | 245 | 71 | 49 | 43 | 106 | 42 |
29 | 175 | 99 | 69 | 64 | --- | 109 | 162 | 66 | 45 | 65 | 84 | 45 |
30 | 143 | 182 | 64 | 66 | --- | 157 | 122 | 62 | 44 | 51 | 67 | 49 |
31 | 125 | --- | 63 | 76 | --- | 109 | --- | 59 | --- | 38 | 59 | --- |
TOTAL | 11351 | 2593 | 3011 | 1849 | 4045 | 4919 | 4878 | 7063 | 5264 | 2306 | 4851 | 1730 |
MEAN | 366.2 | 86.43 | 97.13 | 59.65 | 144.5 | 158.7 | 162.6 | 227.8 | 175.5 | 74.39 | 156.5 | 57.67 |
MAX | 2020 | 182 | 186 | 76 | 438 | 743 | 669 | 1270 | 1310 | 640 | 1020 | 109 |
MIN | 62 | 57 | 63 | 54 | 74 | 63 | 87 | 59 | 44 | 30 | 30 | 41 |
CFSM | 4.05 | 0.96 | 1.07 | 0.66 | 1.60 | 1.76 | 1.80 | 2.52 | 1.94 | 0.82 | 1.73 | 0.64 |
IN. | 4.67 | 1.07 | 1.24 | 0.76 | 1.66 | 2.02 | 2.01 | 2.91 | 2.17 | 0.95 | 2.00 | 0.71 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 71.92 | 92.99 | 95.71 | 86.69 | 116.1 | 156.2 | 183.8 | 139.8 | 115.7 | 77.23 | 90.22 | 77.60 |
MAX | 366 | 276 | 354 | 250 | 374 | 588 | 396 | 295 | 300 | 283 | 512 | 261 |
(WY) | 2002 | 1986 | 1983 | 1999 | 1997 | 1979 | 1983 | 1974 | 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 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1969 - 2002 | |||
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ANNUAL TOTAL | 56557 | 53860 | ||||
ANNUAL MEAN | 155.0 | 147.6 | 108.5 | |||
HIGHEST ANNUAL MEAN | 162 | 1993 | ||||
LOWEST ANNUAL MEAN | 35.1 | 1977 | ||||
HIGHEST DAILY MEAN | 2020 | Oct 14 | 2020 | Oct 14 | 2880 | Aug 15 1987 |
LOWEST DAILY MEAN | 28 | Jul 13,14 | 30 | A | 7.8 | B |
ANNUAL SEVEN-DAY MINIMUM | 30 | Jul 11 | 32 | Jul 20 | 10 | Oct 20 1971 |
MAXIMUM PEAK FLOW | 2130 | Oct 14 | 3470 | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 4.79 | Oct 14 | 6.41 | Jul 18 1996 | ||
INSTANTANEOUS LOW FLOW | 28 | C | ||||
ANNUAL RUNOFF (CFSM) | 1.71 | 1.63 | 1.20 | |||
ANNUAL RUNOFF (INCHES) | 23.27 | 22.16 | 16.31 | |||
10 PERCENT EXCEEDS | 290 | 283 | 227 | |||
50 PERCENT EXCEEDS | 88 | 85 | 62 | |||
90 PERCENT EXCEEDS | 40 | 44 | 26 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |