666 THE ILLINOIS GLACIAL LOBE. 



At Odell wells are obtained at 30 or 40 feet. The drift varies greatly 

 in thickness within the limits of this village. A well at the Chicago and 

 Alton Railway station entered rock after j)enetrating 138 feet of till; 

 another, on the Spencer farm near the western limits of the town, entered 

 rock at 168 feet, but a boring made by Mr. Matteson in the south part of 

 the town penetrated 360 feet of drift. An experimental gas boring about 

 3J miles southwest of Odell penetrated 300 feet of drift. The deep drift 

 at Mr. Matteson's well in Odell is mainly till to a depth of 200 feet, beneath 

 which is sand. 



At Nevada wells are usually obtained at 30 or 40 feet, but records of 

 two borings were collected which failed to obtain water at a depth of 100 

 feet. They are mainly through blue till. 



At Cornell and in its vicinity wells are obtained at about 20 feet in 

 sand and gravel, the village being located on the low gravelly plain bor- 

 dering Vermilion River. 



At Pontiac wells frequently enter limestone at a depth of 10 to 25 

 feet and obtain water at comparatively shallow depths. The public supply 

 is pumped from Vermilion River. 1 An area of sandy drift extends several 

 miles south of this city and wells are there obtained at shallow depth with- 

 out entering rock. 



At Fairbury the public water supply is from a well 2,002 feet in 

 depth, from which water rises within 60 feet of the surface. The well 

 is cased about 365 feet. Wells are usually obtained in that vicinity at 

 about 25 feet in a gravelly drift. Coal shafts in the vicinity enter rock 

 at 50 to 90 feet. 



At Forest strong wells are obtained at 25 or 30 feet and many wells 

 are onlv 10 or 12 feet in depth. Coal shafts and other borings in the vicinity 

 show the drift to be about 150 feet in thickness and largely till in the 

 lower part. 



At Chatsworth the public water supply is from a well sunk to a depth 

 of 67 feet in the glacial drift, mainly through till. Several wells in this 

 village are about 50 feet in depth, and a few are 80 feet, without entering 

 rock. Two coal borings reported in the Geology of Illinois show much 

 difference in the distance to rock. One in the southeast part of sec. 4 

 enters rock at 84 feet, while another, one mile east, at about the same ele- 



1 Manual of American Waterworks, 1897. 





