LOCATION.-- Latitude 41°57'55", longitude 87°52'53" (NAD of 1927), in NE1/4NW1/4NW1/4 sec.16, T.40 N., R.12 E., Cook County, Hydrologic Unit 07120004, on Montrose Road 500 ft West of Mannheim Road, and located on the fence 100 ft past a guard house of the O'Hare Airport at Chicago. | |
PERIOD OF RECORD.-- | |
PRECIPITATION: October 1, 1998 to current year. | |
GAGE.-- An 8-in.-diameter, unheated, tipping-bucket rain gage. | |
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. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
PRECIPITATION: Maximum daily total, 3.59 in., August 22, 2002. | |
EXTREMES FOR CURRENT YEAR.--Maximum daily total, 1.32 in., August 20. |
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PRECIPITATION, TOTAL, IN INCHES, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY SUM VALUES | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 0.23 | 0.98 | s0.01 | 0.36 | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2 | .01 | .03 | s.04 | .08 | .00 | .00 | .02 | .00 | .01 | .00 | .01 | .00 |
| 3 | .00 | .05 | .00 | .29 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 4 | .00 | .45 | .00 | .00 | .00 | .02 | .00 | .00 | .34 | .04 | .00 | .00 |
| 5 | .02 | .00 | .04 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 6 | .03 | .00 | .15 | .00 | .03 | .00 | .02 | .03 | .00 | .00 | .00 | .00 |
| 7 | .04 | .00 | .74 | .00 | .14 | .01 | .01 | .00 | .00 | .00 | .00 | .00 |
| 8 | .54 | .00 | .00 | s.01 | .00 | .00 | .00 | .00 | .03 | .00 | .00 | .00 |
| 9 | .00 | .00 | .00 | s.12 | .00 | .00 | .00 | .12 | .00 | .00 | .13 | .00 |
| 10 | .00 | .00 | .09 | s.05 | .00 | s.12 | .00 | .01 | .02 | .00 | .02 | .00 |
| 11 | .00 | .00 | .00 | s.12 | .00 | .00 | .00 | .20 | .00 | .00 | .12 | .00 |
| 12 | .00 | .00 | .00 | .81 | .00 | s.01 | .57 | .07 | .00 | .02 | .23 | .00 |
| 13 | .00 | .00 | .00 | s.45 | .58 | .00 | .00 | .00 | .01 | .00 | .00 | .00 |
| 14 | .00 | .00 | .00 | .00 | .12 | .00 | .00 | .00 | .05 | .00 | .00 | .13 |
| 15 | .00 | .04 | .00 | .00 | .22 | .00 | .00 | .00 | .01 | .00 | .00 | .18 |
| 16 | .00 | .00 | .00 | .01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 17 | .00 | .00 | .00 | .01 | .00 | s.06 | .02 | .00 | .00 | .00 | .00 | .00 |
| 18 | .00 | .12 | .00 | .00 | .00 | .02 | .00 | .01 | .00 | .00 | .16 | .00 |
| 19 | .00 | .21 | .00 | s.04 | .00 | .09 | .00 | 1.24 | .00 | .00 | .00 | .46 |
| 20 | .00 | .00 | .00 | .00 | s.36 | .00 | .00 | .00 | .00 | .44 | 1.32 | .00 |
| 21 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 22 | .00 | .00 | .00 | .00 | .00 | .01 | .65 | .00 | .00 | .00 | .00 | .64 |
| 23 | 1.04 | .00 | .00 | s.01 | .00 | s.04 | .00 | .00 | .00 | .02 | .00 | .00 |
| 24 | .00 | s.26 | .00 | .00 | .00 | .08 | .00 | .00 | .00 | .00 | .00 | .10 |
| 25 | .00 | s.09 | .00 | s.34 | .00 | s.13 | .00 | .00 | .00 | .30 | .00 | .04 |
| 26 | .00 | s.22 | .00 | s.01 | .00 | .00 | .00 | .00 | .00 | .50 | .00 | .01 |
| 27 | .00 | .58 | .00 | .00 | .17 | .00 | .00 | .05 | .00 | .00 | .00 | .00 |
| 28 | .00 | .00 | .00 | .00 | s.19 | .00 | .00 | .00 | .00 | .00 | .00 | .45 |
| 29 | .41 | s.07 | .00 | .00 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| 30 | .05 | .36 | .02 | .00 | -- | .56 | .00 | .00 | .00 | .00 | .00 | .04 |
| 31 | .00 | -- | .00 | .00 | -- | .00 | -- | .00 | -- | .00 | .00 | -- |
| TOTAL | 2.37 | 3.46 | 1.09 | 2.71 | 1.81 | 1.15 | 1.41 | 1.73 | 0.47 | 1.32 | 1.99 | 2.05 |
| MEAN | 0.08 | 0.12 | 0.04 | 0.09 | 0.06 | 0.04 | 0.05 | 0.06 | 0.02 | 0.04 | 0.06 | 0.07 |
| MAX | 1.04 | 0.98 | 0.74 | 0.81 | 0.58 | 0.56 | 0.65 | 1.24 | 0.34 | 0.50 | 1.32 | 0.64 |
| s Snowfall-affected precipitation |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |