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 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 32 | 35 | 56 | 58 | e30 | 126 | 257 | 73 | 1010 | 68 | 35 | 59 |
2 | 31 | 65 | 53 | 54 | e31 | 173 | 195 | 65 | 521 | 64 | 35 | 47 |
3 | 32 | 272 | 50 | 52 | e31 | 142 | 164 | 60 | 325 | 74 | 39 | 43 |
4 | 37 | 211 | 50 | 54 | e30 | 144 | 140 | 57 | 231 | 88 | 197 | 40 |
5 | 33 | 496 | 97 | 59 | e29 | 844 | 126 | 53 | 174 | 69 | 120 | 37 |
6 | 32 | 258 | 104 | 45 | e30 | 903 | 115 | 53 | 142 | 58 | 74 | 35 |
7 | 31 | 117 | 82 | 48 | e32 | 444 | 103 | 53 | 120 | 58 | 54 | 37 |
8 | 29 | 75 | 71 | 46 | e34 | 299 | 95 | 51 | 105 | 55 | 45 | 36 |
9 | 29 | 60 | 73 | 45 | e35 | 221 | 88 | 49 | 92 | 77 | 42 | 36 |
10 | 28 | 53 | 631 | 43 | e32 | 175 | 85 | 51 | 173 | 132 | 42 | 36 |
11 | 28 | 47 | 740 | 44 | e34 | 140 | 79 | 83 | 401 | 85 | 40 | 32 |
12 | 28 | 43 | 338 | 47 | e33 | 118 | 69 | 75 | 803 | 72 | 41 | 33 |
13 | 32 | 39 | 212 | 46 | e33 | 102 | 67 | 157 | 771 | 62 | 40 | 34 |
14 | 97 | 36 | 156 | 44 | e33 | 119 | 63 | 407 | 364 | 54 | 37 | 33 |
15 | 107 | 36 | 125 | 43 | e34 | 110 | 63 | 477 | 260 | 47 | 36 | 34 |
16 | 65 | 37 | 108 | 43 | e34 | 98 | 60 | 234 | 189 | 47 | 38 | 43 |
17 | 49 | 37 | 95 | 45 | e33 | 98 | 57 | 156 | 160 | 43 | 44 | 39 |
18 | 39 | 369 | 82 | 48 | e33 | 110 | 54 | 208 | 135 | 44 | 47 | 34 |
19 | 34 | 537 | 73 | 45 | 51 | 123 | 57 | 163 | 109 | 42 | 58 | 34 |
20 | 33 | 245 | 65 | 44 | 110 | 141 | 68 | 127 | 95 | 40 | 53 | 35 |
21 | 34 | 136 | 61 | 38 | 201 | 122 | 139 | 241 | 130 | 42 | 43 | 35 |
22 | 33 | 90 | 59 | 36 | 160 | 107 | 104 | 546 | 226 | 52 | 40 | 36 |
23 | 32 | 95 | 61 | 36 | 193 | 100 | 82 | 676 | 155 | 56 | 40 | 35 |
24 | 32 | 232 | 60 | 38 | 212 | 168 | 73 | 336 | 129 | 45 | 50 | 34 |
25 | 44 | 137 | 68 | 35 | 161 | 226 | 150 | 247 | 118 | 41 | 66 | 33 |
26 | 39 | 97 | 64 | 36 | 143 | 409 | 111 | 191 | 104 | 43 | 60 | 34 |
27 | 37 | 76 | 60 | 35 | 117 | 353 | 85 | 150 | 89 | 39 | 79 | 34 |
28 | 37 | 67 | 82 | 32 | 107 | 373 | 75 | 125 | 82 | 39 | 286 | 34 |
29 | 34 | 60 | 94 | 32 | 101 | 1030 | 68 | 101 | 78 | 38 | 214 | 33 |
30 | 34 | 55 | 76 | e32 | --- | 654 | 67 | 431 | 74 | 37 | 115 | 34 |
31 | 34 | --- | 66 | e32 | --- | 356 | --- | 1140 | --- | 38 | 81 | --- |
TOTAL | 1216 | 4113 | 4012 | 1335 | 2137 | 8528 | 2959 | 6836 | 7365 | 1749 | 2191 | 1099 |
MEAN | 39.2 | 137 | 129 | 43.1 | 73.7 | 275 | 98.6 | 221 | 246 | 56.4 | 70.7 | 36.6 |
MAX | 107 | 537 | 740 | 59 | 212 | 1030 | 257 | 1140 | 1010 | 132 | 286 | 59 |
MIN | 28 | 35 | 50 | 32 | 29 | 98 | 54 | 49 | 74 | 37 | 35 | 32 |
CFSM | 0.43 | 1.52 | 1.43 | 0.48 | 0.82 | 3.04 | 1.09 | 2.44 | 2.72 | 0.62 | 0.78 | 0.41 |
IN. | 0.50 | 1.69 | 1.65 | 0.55 | 0.88 | 3.51 | 1.22 | 2.81 | 3.03 | 0.72 | 0.90 | 0.45 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2004, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 70.5 | 92.9 | 95.2 | 83.9 | 113 | 157 | 179 | 148 | 118 | 76.5 | 88.7 | 75.5 |
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 2003 CALENDAR YEAR | FOR 2004 WATER YEAR | WATER YEARS 1969 - 2004 | |||
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ANNUAL TOTAL | 34236 | 43540 | ||||
ANNUAL MEAN | 93.8 | 119 | 108 | |||
HIGHEST ANNUAL MEAN | 162 | 1993 | ||||
LOWEST ANNUAL MEAN | 35.1 | 1977 | ||||
HIGHEST DAILY MEAN | 1240 | May 2 | 1140 | May 31 | 2880 | Aug 15 1987 |
LOWEST DAILY MEAN | 26 | A | 28 | Oct 10-12 | 7.8 | B |
ANNUAL SEVEN-DAY MINIMUM | 28 | Feb 11 | 29 | Oct 6 | 10 | Oct 20 1971 |
MAXIMUM PEAK FLOW | 1240 | May 31 | 3470 | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 3.69 | May 31 | 6.41 | Jul 18 1996 | ||
INSTANTANEOUS LOW FLOW | 14 C | Jan 30 | ||||
ANNUAL RUNOFF (CFSM) | 1.04 | 1.32 | 1.19 | |||
ANNUAL RUNOFF (INCHES) | 14.09 | 17.92 | 16.23 | |||
10 PERCENT EXCEEDS | 158 | 246 | 226 | |||
50 PERCENT EXCEEDS | 49 | 61 | 61 | |||
90 PERCENT EXCEEDS | 30 | 33 | 27 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |