568 



THE ILLINOIS GLACIAL LOBE. 



INDIVIDUAL WELLS. 



The public water supply for the city of Freeport is obtained mainly 

 from a series of tubular wells sunk to a depth, of about 40 feet through the 

 alluvium and possibly through glacial deposits of the Pecatonica Valley. 

 The supply of water is derived from sand just above the rock. The 

 Manual of American Waterworks (1897) reports that a part of the supply 

 is from wells about 200 feet in depth, which enter the St. Peter sandstone. 

 This sandstone is stated by Mr. Hershey to set in about 110-130 feet 

 below the surface of the Pecatonica flood plain at Freeport. 



Several private- wells in Freeport have been sunk to the St. Peter 

 sandstone, and this sandstone is occasionally encountered in wells in the 

 north part of the county. Near Orangeville the St. Peter sandstone comes 

 nearly to the surface. The waterworks supply for that village is from a 

 well 142 feet in depth, which is mainly through St. Peter sandstone. 



The public water supply at Lena is from a deep well, but the precise 

 depth has not been ascertained. Pock is usually entered in that vicinity 

 at about 15 feet. 



In the vicinity of Kent rock is entered at about 30 feet. The railway 

 well at Kent Station is 275 feet in depth and obtains its supply in lime- 

 stone. The limestone ridge south of Kent has rock at surface, there being 

 scarcely enough drift to form a soil. 



The following table of wells is made up largely from data furnished 

 by Mr. Hershey: 



Table of icell sections in /Stephenson County, Illinois. 



