WELLS OF IROQUOIS COUNTY, ILLINOIS. Grjl 



a buried peat 30 feet in thickness. It is on the farm of Dr. Ludden, in sec 

 33, T. 24, R. 13 W. The following' is the section furnished by Dr. Ludden: 



Section of Ludden well, 5 miles smith of Clayton, Illinois. 



Feet. 



Mainly blue till _ go 



Hard brown till 25 



Peat 30 



Coarse sand i 9 



Total 144 



At Cissna Park the public water supply is from a flowing well, the 

 water being pumped from the receiving reservoir to the standpipe. 1 



North from Clayton, in the vicinity of Ash Grove, many flowing wells 

 are obtained at a depth of about 100 feet. They penetrate alternations of 

 sand and soft blue till to a depth of 55 or 60 feet, below which a hard gray 

 till is entered with which thin beds of gravel, yielding water, are associated. 

 Several wells are reported to pass through a soil containing wood at a depth 

 of about 100 feet, or some distance below the top of the hard till. In the 

 Ash Grove timber belt wells are occasionally sunk to a depth of 150 feet 

 and penetrate a section similar to the preceding, passing through soil and 

 wood at 95 or 100 feet, beneath which are alternations of hard till and sand. 

 Occasionally a well passes through a heavy deposit of gravel or sand 

 beneath the soft till, but usually the sand and gravel beds are thin. 



In a low tract known as Shavetail Slough, in the northeast part of 

 T. 25, R. 13 W., several wells have been sunk to a depth of about 160 feet, 

 which penetrate a black soil below hard till at 150 to 158 feet, and obtain 

 water in sand at bottom. The head is sufficient to barely reach the surface. 



In the vicinity of Buckley, and thence southeast to Cissna Park, flow- 

 ing wells are frequently obtained at depths of but 50 feet, in sand or gravel 

 below a soft blue till. At Buckley the water rises within 8 to 15 feet of the 

 top, but on low ground west of the village a few wells overflow at an alti- 

 tude about 690 feet above tide. The public supply is from a flowing well. 1 



In the vicinity of Thawville flowing wells are obtained only on the 

 lowest ground at an altitude about 685 feet above tide. They frequently 

 reach a depth of 135 or 140 feet, and pass through a black soil containing 

 wood near the bottom. 



1 Manual of American Waterworks, 1897. 



