LOCATION.-- Lat 41°26'08", long 88°12'14" (NAD of 1927), in SW1/4SW1/4SE1/4 sec. 9, T.34 N., R.9 E., Hydrologic Unit 07120004, Well 1 (Illinois Environmental Protection Agency 20357), about 1 mi northeast of Channahon. Owner: Village of Channahon.

AQUIFER.-- Galena through Ancell Groups of Ordovician age.

WELL CHARACTERISTICS.-- Diameter unrecorded, depth 765 ft, cased to 350 ft, open hole, drilled, public supply.

PERIOD OF RECORD.--

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