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422803087475303       LAKE COUNTY, IL, LOCAL NUMBER 46N12E-14.6G3



LOCATION.-- Lat 42°28'03", long 87°47'53", Hydrologic Unit 04040002, at Illinois Beach State Park, northern unit. Owner: U.S. Geological Survey.

AQUIFER.-- Elmhurst Sandstone member of the Eau Claire Formation and the upper Mount Simon Sandstone of Cambrian age.

WELL CHARACTERISTICS.-- Drilled unused artesian well, one of three piezometers in 10-in. borehole, diameter 1.25 in., depth 1,684 ft, cased to 1,666 ft, 2-in. screen.

PERIOD OF RECORD.--
GROUND-WATER LEVELS: November 1988 to September 1997, December 1998 to current year. Miscellaneous water-level measurements from December 1981 to November 1988 are available in files of the U.S. Geological Survey.

INSTRUMENTATION.-- Manual steel-tape measurement made every 2 months.

DATUM.-- Land-surface datum is 586 ft above sea level. Measuring point: Top coupling on 1.25-in. plastic pipe, 2.67 ft above land-surface datum.

REMARKS.-- Ground-water levels affected by regional pumping.

EXTREMES FOR PERIOD OF RECORD.--
GROUND-WATER LEVELS: Highest water level, 207.94 ft below land-surface datum, Sept. 18, 2000; lowest, 232.7 ft below land-surface datum, Oct. 18, Nov. 12, 18, 19, 28, 29, 1989.
WATER LEVELS IN FEET BELOW LAND SURFACE DATUM,
WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
WATER WATER WATER WATER WATER WATER
LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL
OCT 14 209.94 NOV 04 209.87 JAN 10 208.87 MAR 15 208.69 MAY 26 207.95 SEP 18 207.94
 
WATER YEAR 2000 HIGHEST 207.94 SEP 18, 2000 LOWEST 209.94 OCT 14, 1999


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data