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LOCATION.-- Lat 41°43'13", long 88°07'55" (NAD of 1927), 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 1994-2002. |
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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. 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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EXTREMES FOR CURRENT YEAR.--Maximum daily total, 3.97 in., October 13. |
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PRECIPITATION, TOTAL, IN INCHES, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY SUM VALUES |
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| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 0.00 | 0.01 | 0.01 | 0.00 | 0.05 | 0.00 | 0.24 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2 | .00 | .00 | .01 | .00 | .00 | .19 | .18 | .00 | .00 | .00 | .06 | .04 |
| 3 | .00 | .00 | .00 | .00 | .07 | .00 | .01 | .00 | .16 | .00 | .00 | .06 |
| 4 | 1.29 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | 1.50 | .68 | 1.22 | .00 |
| 5 | .22 | .00 | .06 | .00 | .00 | .00 | .00 | .00 | .01 | .00 | .01 | .00 |
| 6 | .00 | .00 | .00 | .03 | .01 | .73 | .00 | .23 | .00 | .00 | .00 | .00 |
| 7 | .00 | .00 | .00 | .00 | .18 | .02 | .48 | .00 | .00 | .00 | .00 | .00 |
| 8 | .00 | .00 | .00 | .00 | .08 | .29 | 1.10 | .13 | .00 | .09 | .00 | .00 |
| 9 | .00 | .00 | .00 | .00 | .02 | .50 | .03 | .27 | .00 | 1.57 | .00 | .00 |
| 10 | .17 | .00 | .00 | .01 | .05 | .00 | .00 | .00 | .10 | .00 | .00 | .02 |
| 11 | .04 | .00 | .00 | .00 | .00 | .00 | .00 | 2.86 | .22 | .10 | .00 | .00 |
| 12 | .49 | .00 | .53 | .00 | .00 | .13 | .14 | .14 | .09 | .00 | .34 | .00 |
| 13 | 3.97 | .00 | .02 | .00 | .00 | .00 | .00 | .00 | .11 | .00 | .56 | .00 |
| 14 | .01 | .29 | .11 | .06 | .00 | .00 | .00 | .00 | .33 | .00 | .01 | .00 |
| 15 | .06 | .00 | .00 | .01 | .00 | .03 | .00 | .00 | .00 | .00 | .00 | .00 |
| 16 | .02 | .00 | .15 | .00 | .00 | .00 | .00 | .76 | .00 | .00 | .05 | .00 |
| 17 | .00 | .00 | .07 | .00 | .00 | .00 | .09 | .00 | .00 | .00 | .00 | .00 |
| 18 | .00 | .05 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .16 | .00 | .16 |
| 19 | .00 | .07 | .09 | .00 | .62 | .02 | .81 | .01 | .00 | .00 | .23 | .15 |
| 20 | .00 | .00 | .00 | .02 | .24 | .04 | .17 | .00 | .00 | .00 | .00 | .44 |
| 21 | .00 | .00 | .00 | .05 | .01 | .00 | .26 | .00 | .00 | .00 | .00 | .15 |
| 22 | .16 | .00 | .12 | .11 | .00 | .00 | .01 | .00 | .00 | .00 | 1.81 | .13 |
| 23 | .81 | .01 | .00 | .00 | .00 | .00 | .00 | .13 | .00 | .00 | .00 | .00 |
| 24 | .86 | .51 | .00 | .00 | .00 | .00 | .42 | .02 | .00 | .00 | .01 | .00 |
| 25 | .00 | .11 | .00 | .00 | .00 | .00 | .00 | .13 | .26 | .00 | .00 | .00 |
| 26 | .00 | .18 | .00 | .00 | .00 | .04 | .00 | .00 | .00 | .00 | .00 | .00 |
| 27 | .00 | .00 | .00 | .00 | .00 | .00 | .82 | .00 | .01 | .36 | .00 | .00 |
| 28 | .00 | .07 | .00 | .00 | .00 | .00 | .01 | .00 | .00 | .00 | .00 | .00 |
| 29 | .00 | .11 | .00 | .00 | -- | .50 | .00 | .00 | .00 | .25 | .00 | .16 |
| 30 | .06 | .24 | .00 | .03 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 31 | .00 | -- | .00 | .21 | -- | .04 | -- | .00 | -- | .00 | .00 | -- |
| TOTAL | 8.16 | 1.65 | 1.17 | 0.53 | 1.33 | 2.53 | 4.77 | 4.85 | 2.79 | 3.21 | 4.30 | 1.31 |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |