LOCATION.-- Lat 41°43'14", long 88°07'55" (NAD of 1983), in SW1/4NE1/4 sec.6, T.37 N., R.10 E., Will County, Hydrologic Unit 07120004, on downstream side of bridge on Washington Street, 3.5 mi southeast of Naperville, and at mile 29.3. |
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DRAINAGE AREA.-- 123 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1988 to current year. |
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STAGE: Water years 1994 to current year. |
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PRECIPITATION: May 1989 to current year. |
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GAGE.-- Water-stage recorder, phone telemeter, unheated tipping-bucket rain gage, and crest-stage gage. Datum of gage is 630.00 ft above NGVD of 1929 (629.73 ft NAVD 1988). Water years 1989 to 1995 datum incorrectly published as 625.28 ft above NGVD of 1929. |
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REMARKS.-- For precipitation records, snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 6,620 ft3/s, July 18, 1996, gage height, 14.31 ft; minimum discharge, 4.0 ft3/s, August 29, 2002. |
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PRECIPITATION: Maximum daily total, 5.34 in., August 4, 1998. |
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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 | 44 | 148 | 218 | 70 | e60 | 210 | 151 | 76 | 48 | 39 | 43 | 38 |
2 | 72 | 236 | 189 | 190 | e59 | 173 | 271 | 72 | 44 | 34 | 42 | 35 |
3 | 58 | 163 | 145 | 222 | e60 | 155 | 234 | 69 | 46 | 30 | 42 | 36 |
4 | 50 | 188 | 120 | 234 | e64 | 150 | 176 | 66 | 69 | 30 | 42 | 35 |
5 | 48 | 176 | 108 | 181 | 106 | 138 | 150 | 61 | 87 | 37 | 41 | 31 |
6 | 45 | 122 | 139 | 152 | 165 | 129 | 134 | 62 | 65 | 40 | 40 | 32 |
7 | 45 | 97 | 414 | 130 | 322 | 135 | 130 | 67 | 53 | 34 | 39 | 37 |
8 | 102 | 82 | 506 | 108 | 400 | 130 | 121 | 58 | 50 | 32 | 39 | 40 |
9 | 139 | 73 | 317 | 93 | 282 | 120 | 111 | 62 | 47 | 30 | 40 | 47 |
10 | 85 | 71 | 213 | 91 | 206 | 116 | 107 | 65 | 45 | 29 | 43 | 38 |
11 | 65 | 64 | 166 | 110 | 177 | 122 | 101 | 86 | 41 | 27 | 57 | 35 |
12 | 58 | 55 | 138 | 464 | 159 | 118 | 260 | 100 | 38 | 32 | 51 | 35 |
13 | 54 | 53 | 113 | 1330 | 201 | 108 | 409 | 87 | 47 | 33 | 96 | 36 |
14 | 51 | 55 | e90 | 1210 | 552 | 104 | 240 | 78 | 43 | 30 | 53 | 44 |
15 | 54 | 54 | e76 | 597 | 552 | 101 | 169 | 68 | 42 | 33 | 47 | 48 |
16 | 50 | 53 | e70 | 326 | 427 | 102 | 142 | 61 | 38 | 32 | 45 | 70 |
17 | 46 | 52 | 68 | e240 | 307 | 98 | 128 | 59 | 35 | 30 | 43 | 59 |
18 | 45 | 56 | 62 | e200 | 227 | 95 | 116 | 57 | 32 | 30 | 46 | 45 |
19 | 50 | 116 | e59 | e170 | 188 | 100 | 111 | 247 | 31 | 34 | 53 | 57 |
20 | 46 | 120 | e54 | 144 | 196 | 99 | 111 | 276 | 32 | 53 | 202 | 64 |
21 | 44 | 96 | e50 | e110 | 244 | 95 | 96 | 158 | 33 | 81 | 218 | 51 |
22 | 47 | 79 | e47 | e100 | 208 | 92 | 132 | 115 | 31 | 64 | 121 | 46 |
23 | 120 | 73 | e43 | e96 | 180 | 93 | 197 | 91 | 31 | 58 | 86 | 47 |
24 | 147 | 81 | e42 | e90 | 162 | 91 | 150 | 78 | 32 | 44 | 73 | 102 |
25 | 97 | 102 | e40 | e84 | 150 | 139 | 124 | 70 | 30 | 90 | 62 | 61 |
26 | 79 | 104 | e40 | e80 | 138 | 141 | 105 | 63 | 38 | 171 | 54 | 68 |
27 | 66 | 240 | e40 | e70 | 133 | 122 | 95 | 61 | 34 | 157 | 49 | 64 |
28 | 58 | 341 | e41 | e66 | 202 | 111 | 89 | 59 | 37 | 69 | 43 | 74 |
29 | 71 | 222 | e42 | e64 | --- | 109 | 83 | 53 | 35 | 51 | 39 | 85 |
30 | 103 | 183 | e47 | e64 | --- | 122 | 80 | 50 | 51 | 44 | 42 | 76 |
31 | 89 | --- | e56 | e62 | --- | 175 | --- | 48 | --- | 42 | 41 | --- |
TOTAL | 2128 | 3555 | 3753 | 7148 | 6127 | 3793 | 4523 | 2623 | 1285 | 1540 | 1932 | 1536 |
MEAN | 68.6 | 118 | 121 | 231 | 219 | 122 | 151 | 84.6 | 42.8 | 49.7 | 62.3 | 51.2 |
MAX | 147 | 341 | 506 | 1330 | 552 | 210 | 409 | 276 | 87 | 171 | 218 | 102 |
MIN | 44 | 52 | 40 | 62 | 59 | 91 | 80 | 48 | 30 | 27 | 39 | 31 |
CFSM | 0.56 | 0.96 | 0.98 | 1.87 | 1.78 | 0.99 | 1.23 | 0.69 | 0.35 | 0.40 | 0.51 | 0.42 |
IN. | 0.64 | 1.08 | 1.14 | 2.16 | 1.85 | 1.15 | 1.37 | 0.79 | 0.39 | 0.47 | 0.58 | 0.46 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 112 | 142 | 110 | 139 | 175 | 183 | 228 | 228 | 173 | 114 | 114 | 99.6 |
MAX | 534 | 290 | 187 | 315 | 518 | 316 | 449 | 449 | 368 | 456 | 202 | 332 |
(WY) | 2002 | 1996 | 1991 | 1999 | 1997 | 1990 | 1993 | 1990 | 1996 | 1996 | 2002 | 2001 |
MIN | 30.5 | 38.3 | 33.5 | 40.0 | 43.9 | 73.0 | 69.5 | 62.6 | 32.7 | 39.5 | 35.7 | 40.9 |
(WY) | 1990 | 2000 | 1990 | 2003 | 2003 | 2000 | 1989 | 1989 | 1992 | 1991 | 1991 | 1991 |
SUMMARY STATISTICS | FOR 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1989 - 2005 | |||
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ANNUAL TOTAL | 49493 | 39943 | ||||
ANNUAL MEAN | 135 | 109 | 151 | |||
HIGHEST ANNUAL MEAN | 202 | 2002 | ||||
LOWEST ANNUAL MEAN | 98.6 | 2003 | ||||
HIGHEST DAILY MEAN | 1240 | May 31 | 1330 | Jan 13 | 4960 | Jul 18 1996 |
LOWEST DAILY MEAN | 37 | Sep 26 | 27 | Jul 11 | 16 | A |
ANNUAL SEVEN-DAY MINIMUM | 39 | Sep 24 | 30 | Jul 8 | 19 | Jun 3 1994 |
MAXIMUM PEAK FLOW | 1450 | Jan 13 | 6620 | Jul 18 1996 | ||
MAXIMUM PEAK STAGE | 8.50 | Jan 13 | 14.31 | Jul 18 1996 | ||
INSTANTANEOUS LOW FLOW | 24 | Jul 11 | 4.0 | Aug 29 2002 | ||
ANNUAL RUNOFF (CFSM) | 1.10 | 0.890 | 1.23 | |||
ANNUAL RUNOFF (INCHES) | 14.97 | 12.08 | 16.70 | |||
10 PERCENT EXCEEDS | 238 | 207 | 306 | |||
50 PERCENT EXCEEDS | 78 | 72 | 88 | |||
90 PERCENT EXCEEDS | 45 | 37 | 39 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |