LOCATION.-- Lat 41°49'55", long 89°29'19" (NAD of 1927), in SE1/4SE1/4SW1/4 sec. 5, T.21 N., R.9 E., Hydrologic Unit 07090005, Well 7 (Illinois Environmental Protection Agency 11557), within Dixon. Owner: City of Dixon.

AQUIFER.-- Ancell Group of Ordovician age through Elmhurst Sandstone Member of the Eau Claire Formation and (or) Mount Simon Sandstone of Cambrian age.

WELL CHARACTERISTICS.-- Diameter unrecorded, depth 1,870 ft, cased to 315 ft, open hole, drilled, public supply,

PERIOD OF RECORD.--

GROUND-WATER QUALITY: February 1987 (see Voelker and others, 1987); June 2002.