LOCATION.-- Lat 40°46'29", long 87°33'56" (NAD of 1927), in SW1/4NW1/4NE1/4 sec. 2, T.26 N., R.11 W., Hydrologic Unit 07120002, Well 4 (Illinois Environmental Protection Agency 47561), within Sheldon. Owner: Village of Sheldon.

AQUIFER.-- Glacial drift of Quaternary age.

WELL CHARACTERISTICS.-- Diameter 10 in., depth 116 ft, cased to 100 ft, screened, drilled, public supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: August 1985 (see Voelker and others, 1987); November 2001.