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LOCATION.-- Lat 41°42'17", long 87°59'28" (NAD of 1927), Hydrologic Unit 07120004, at Argonne National Laboratory. Owner: Argonne National Laboratory. |
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AQUIFER.-- Niagara Dolomite of Middle Silurian Age. |
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WELL CHARACTERISTICS.-- Drilled unused artesian well, diameter 4.0 in., depth 140 ft, cased to 90.0 ft, open end. |
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PERIOD OF RECORD.-- |
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GROUND-WATER LEVELS: December 1948 to September 1997. |
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REVISED RECORDS.-- WDR IL-79-2: 1978. |
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INSTRUMENTATION.-- Electronic data logger--60 minute recording. |
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DATUM.-- Land surface datum is 733 ft above NGVD of 1929. Measuring point: Top of casing, 0.31 ft above land-surface datum. |
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REMARKS.-- Ground-water levels affected by pumping of nearby wells and regional drawdown cone. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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GROUND-WATER LEVELS: Highest water level, 88.97 ft below land-surface datum, May 27, 1951; lowest, 106.19 ft. below land-surface datum, Feb. 25, 1990. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |