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LOCATION.-- Lat 42°28'03", long 87°47'53" (NAD of 1927), in SW1/4NE1/4NW1/4 sec. 14, T. 46 N., R. 12 E., Hydrologic Unit 04040002, at Illinois Beach State Park, northern unit. Owner: U.S. Geological Survey. |
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AQUIFER.-- Ironton and Galesville Sandstones of Cambrian age. |
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WELL CHARACTERISTICS.-- One of three piezometers in 10-in. borehole, diameter 1.25 in., depth 1,203 ft, cased to 1,186 ft, 2-in. screen, drilled observation artesian well. |
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PERIOD OF RECORD.-- |
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GROUND-WATER LEVELS: November 1988 to September 1997, December 1998 to current year (fragmentary). Miscellaneous water-level measurements from December 1981 to November 1988 are available in files of the U.S. Geological Survey. |
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INSTRUMENTATION.-- Electronic data logger--60-minute recording. |
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DATUM.-- Land-surface datum is 586 ft above NGVD of 1929. Measuring point: Top coupling on 1.25-in. plastic pipe, 2.73 ft above land-surface datum. |
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REMARKS.-- Ground-water levels affected by regional pumping. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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GROUND-WATER LEVELS: Highest water level, 206.79 ft below land-surface datum, April 12, 2001; lowest, 235.66 ft below land-surface datum, Dec. 22, 1989. |
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| WATER LEVEL, IN FEET BELOW LAND SURFACE DATUM, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MAXIMUM VALUES |
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| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 5 | 209.96 | 209.55 | 209.21 | 208.61 | 208.60 | 208.31 | 208.86 | 208.16 | 208.50 | 209.04 | 212.67 | 212.86 |
| 10 | 209.97 | 209.73 | 209.20 | 208.61 | 208.37 | 208.72 | 208.63 | 208.16 | 208.40 | 210.06 | 212.87 | 212.60 |
| 15 | 209.80 | 209.79 | 209.20 | 208.72 | 208.08 | 208.26 | 207.93 | 207.79 | 207.93 | 210.19 | 213.32 | 212.86 |
| 20 | 209.57 | 209.90 | 208.97 | 208.48 | 207.72 | 208.15 | 208.15 | 207.91 | 208.17 | 211.11 | 213.25 | 212.79 |
| 25 | 209.43 | 209.49 | 208.78 | 208.49 | 208.02 | 208.14 | 208.26 | 207.67 | 207.99 | 212.08 | 212.87 | 212.92 |
| EOM | 209.50 | 209.20 | 208.95 | 208.49 | 208.13 | 208.27 | 207.86 | 207.51 | 208.17 | 212.15 | 212.60 | 212.14 |
| WATER YEAR 2002 | HIGH 207.32 | APR 28 | LOW 213.58 | AUG 16 | ||||||||
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |