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LOCATION.-- Latitude 41°50'37", longitude 88°11'06" (NAD of 1927), in SW1/4SW1/4SW1/4 sec.23, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on Mack Road 1 mi east of State Highway 59, and located on the north side of the roof of the Blackwell Forest Preserve maintenance building near Warrenville. |
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PERIOD OF RECORD.-- |
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PRECIPITATION: July 1997 to current year. |
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GAGE.-- An 8-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, 5.06 in., September 11, 2000. |
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EXTREMES FOR CURRENT YEAR.--Maximum daily total, 2.73 in., September 19. |
PRECIPITATION, TOTAL, IN INCHES, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY SUM VALUES |
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| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.28 | 0.00 | 0.00 | 0.00 |
| 2 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .01 | .00 | .00 | .00 |
| 3 | .49 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .13 | .00 | .00 |
| 4 | .57 | .00 | .00 | .00 | s.01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 5 | .12 | .00 | .00 | .00 | .00 | .00 | .17 | .00 | 1.41 | .00 | .00 | .00 |
| 6 | .01 | .00 | .00 | s.01 | s.03 | .00 | .63 | .24 | .00 | .00 | .00 | .78 |
| 7 | .02 | .00 | .00 | s.01 | .03 | .00 | .63 | .13 | .00 | .06 | .00 | .01 |
| 8 | .00 | e.31 | .00 | .00 | .62 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 9 | .00 | .58 | .00 | .00 | .43 | .00 | .15 | .00 | .00 | .00 | .00 | .34 |
| 10 | .00 | .00 | .01 | .00 | .00 | .07 | .00 | .43 | .00 | .00 | .00 | .01 |
| 11 | .00 | .00 | .00 | .00 | .00 | .03 | .64 | .27 | .12 | .00 | .00 | .00 |
| 12 | .00 | .02 | .00 | .00 | .00 | .19 | .05 | .00 | .45 | .00 | .00 | .00 |
| 13 | .00 | .18 | .00 | .00 | .03 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 14 | e.03 | .00 | .00 | .17 | .24 | .01 | .01 | .02 | .11 | .00 | .00 | .00 |
| 15 | e.06 | .00 | .00 | .05 | .00 | .46 | .46 | .00 | .06 | .00 | .00 | .00 |
| 16 | e.01 | .00 | .23 | .00 | .00 | .03 | .00 | .01 | .00 | .00 | .00 | .00 |
| 17 | .00 | .00 | .00 | .00 | .00 | .01 | .00 | .05 | .00 | .04 | .00 | .04 |
| 18 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .19 | .05 | .00 | 1.02 |
| 19 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .04 | .00 | .00 | 2.73 |
| 20 | .00 | .00 | .00 | .00 | .00 | .00 | .33 | .01 | .00 | .00 | .00 | .00 |
| 21 | .00 | .00 | .00 | .00 | .00 | .00 | .30 | .32 | .24 | .85 | .00 | .00 |
| 22 | .00 | .00 | .00 | .00 | .00 | .00 | .10 | .05 | .00 | .91 | .09 | .00 |
| 23 | e.08 | .00 | .00 | .00 | .00 | .00 | .83 | .04 | .00 | .00 | .00 | .00 |
| 24 | e.05 | .00 | .00 | .00 | .86 | .00 | .00 | .07 | .00 | .00 | .00 | .00 |
| 25 | .00 | .22 | .00 | .00 | .05 | .00 | .00 | .79 | .00 | .00 | .00 | .00 |
| 26 | .00 | .08 | .00 | .00 | .00 | .00 | .00 | .68 | .00 | .00 | .00 | .00 |
| 27 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .01 | .00 | .00 | .00 | .00 |
| 28 | .00 | .01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 29 | .00 | .06 | .00 | .80 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 30 | .00 | .00 | .00 | .21 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 31 | .00 | -- | .00 | .00 | -- | .12 | -- | .76 | -- | .00 | .00 | -- |
| TOTAL | 1.44 | 1.46 | 0.26 | 1.25 | 2.30 | 0.92 | 4.30 | 3.88 | 2.91 | 2.04 | 0.09 | 4.93 |
| s Snowfall-affected precipitation | |
| e Estimated |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |