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LOCATION.-- Latitude 41°51'31", longitude 88°14'36" (NAD of 1927), in NW1/4SW1/4SW1/4 sec.17, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on McChesney Road 0.5 mi north of Eola Road, and at the National Accelerator Lab near West Chicago. |
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PERIOD OF RECORD.-- |
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PRECIPITATION: April 1989 to October 1995 and July 1997 to current year. |
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GAGE.-- A 12-in.-diameter, unheated, tipping-bucket rain gage. |
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REMARKS.-- 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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PRECIPITATION: Maximum daily total, 5.09 in., July 9, 2002. |
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EXTREMES FOR CURRENT YEAR.--Maximum daily total, 5.09 in., July 9. |
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 | 0.03 | 0.00 | 0.00 | 0.09 | 0.00 | 0.17 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2 | .00 | .00 | .01 | .00 | .01 | .23 | .06 | .02 | .00 | .00 | .00 | .16 |
| 3 | .00 | .00 | .00 | .00 | .02 | .00 | .00 | .00 | .44 | .00 | .00 | .00 |
| 4 | .81 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | 2.84 | .00 | 1.24 | .00 |
| 5 | .15 | .00 | .01 | .00 | .00 | .04 | .00 | .00 | .00 | .00 | .00 | .00 |
| 6 | .00 | .00 | .00 | .03 | .02 | .23 | .00 | .04 | .00 | .00 | .00 | .00 |
| 7 | .01 | .00 | .00 | .00 | .17 | .00 | .48 | .00 | .00 | .00 | .00 | .00 |
| 8 | .00 | .00 | .00 | .00 | .00 | .34 | 1.07 | .22 | .00 | .04 | .00 | .00 |
| 9 | .00 | .00 | .00 | .00 | .00 | .54 | .03 | .35 | .00 | 5.09 | .00 | .00 |
| 10 | .20 | .00 | .00 | .00 | .08 | .00 | .00 | .00 | .00 | .00 | .00 | .08 |
| 11 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | 2.42 | .00 | .00 | .00 | .00 |
| 12 | e.48 | .00 | .47 | .00 | .00 | .00 | .00 | .79 | .00 | .00 | .00 | .00 |
| 13 | e3.03 | .06 | .17 | .00 | .00 | .00 | .00 | .00 | e.27 | .00 | 2.86 | .00 |
| 14 | .01 | .30 | .03 | .08 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 15 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 16 | .01 | .01 | .20 | .00 | .00 | .00 | .00 | 1.22 | .00 | .00 | .13 | .00 |
| 17 | .01 | .00 | .03 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 18 | .00 | .13 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .14 |
| 19 | .00 | .10 | .14 | .00 | .55 | .00 | .00 | .00 | .00 | .00 | .12 | .02 |
| 20 | .00 | .00 | .00 | .02 | .57 | .02 | .00 | .00 | .00 | .00 | .00 | .35 |
| 21 | .00 | .00 | .00 | .01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 22 | .55 | .00 | .25 | .01 | .00 | .00 | .00 | .00 | .00 | .00 | 1.92 | .27 |
| 23 | .63 | .03 | .00 | .00 | .00 | .00 | .00 | .02 | .00 | .00 | .11 | .00 |
| 24 | .57 | .59 | .00 | .00 | .00 | .00 | .02 | .06 | .00 | .00 | .00 | .00 |
| 25 | .00 | .13 | .00 | .00 | .00 | .00 | .00 | .23 | .00 | .00 | .00 | .00 |
| 26 | .00 | .04 | .00 | .00 | .00 | .00 | .00 | .00 | e.05 | .00 | .00 | .00 |
| 27 | .00 | .00 | .00 | .00 | .00 | .00 | .67 | .00 | .00 | .36 | .00 | .00 |
| 28 | .00 | .09 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .65 | .00 | .00 |
| 29 | .00 | .09 | .00 | .00 | -- | .67 | .00 | .00 | .00 | .11 | .00 | .09 |
| 30 | .02 | .40 | .00 | .00 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 31 | .00 | -- | .00 | .07 | -- | .00 | -- | .00 | -- | .00 | .00 | -- |
| TOTAL | 6.48 | 2.00 | 1.31 | 0.22 | 1.51 | 2.07 | 2.50 | 5.49 | 3.60 | 6.25 | 6.38 | 1.11 |
| e Estimated |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |