WELLS OF CLINTON COUNTY, ILLINOIS. 



7(51 



A well on one of the drift knolls southeast from Carlyle in sec. 14, 

 T. 1 N., R. 2 W., was mainly through sand and gravel to a depth of 46 feet. 

 It is thought by the residents that most of these knolls and ridges contain 

 much sand and gravel. 



The following table of well borings is compiled from data furnished 

 in the Geology of Illinois (Vol. Ill) : 



Wells in Clinton (Hounty. 



Owner or location. 



Sec. 5, T. 3, R. 2 W 



Sec. 6, T. 3, R. 2 W 



Beaver Prairie, T. 3, R. 3 W . . . . 



Drift knolls, T. 1, R. 3 W 



Sec.34,T.2, R.4W 



Mr. Marks, at Breese 



Trenton, coal shaft 



Rock at bottom. 



Rock at bottom. 



No rock ; several wells. 



Several wells; drift about 70 feet. 



On knoll, mainly sand. 



Rock at 16 feet. 



Rock entered at 27 feet. 



ST. CLAIR COUNTY. 



GENERAL STATEMENT. 



St. Clair County is situated in the southwestern part of the State and 

 borders the Mississippi River for a few miles opposite the city of St. Louis. 

 It has an area of f>80 square miles, with Belleville as the county seat. The 

 Kaskaskia River crosses its southeastern corner, and the greater part of the 

 county is tributary to that river through Silver and Richland creeks, there 

 being only a narrow strip along the bottoms and east bluff of the Missis- 

 sippi which is not tributary to it. This strip along the Mississippi bluffs is 

 largely underlain by St. Louis limestone, in which subterranean drainage is 

 developed through caverns and sink holes. The western portion of the 

 county is covered with a deposit of porous loess, which extends as far east 

 as the meridian of Belleville, The eastern portion is largely covered by a 

 white clay, though scarcely so compact as that found in counties to the east. 



A belt of prominent drift ridges leads southward through the eastern 

 half of the county, passing between Lebanon and O'Fallon, and just east 

 of the city of Belleville. These ridges rise in places to a height of fully 



