654 THE ILLINOIS GLACIAL LOBE, 



90 feet. Iu some cases water fails to reach tlie surface, chough all the wells 

 in that locality have strong- hydrostatic pressure. 



At St. Anne a few of the wells reach a depth of 80 feet, entering rock 

 at about 60 feet. 



At Sherburnville, on the east border of the county, wells frequently 

 reach a depth of 50 feet without entering- rock. They penetrate 25 or 30 

 feet of till, beneath which is sand. Much of T. 32, R. 14 E., which is situ- 

 ated west from Sherburnville, has wells of similar depth and structure, but 

 in the northeast part of T. 32, R. 13 E., rock is often struck at a depth of 

 30 or 40 feet. 



In the vicinity of St. George, in the northern part of the county, wells 

 usually enter rock at a depth of 10 or 20 feet. This thin drift characterizes 

 much of northern Kankakee County westward beyond Manteno. 



In a few places in the west part of T. 32, R. 14 E., and in T. 32, R. 

 13 E., well drillers report having passed through an old soil below the blue 

 till near the base of the drift. 



At Desehn post-office, in the northwest part of the count v, there is a 

 drift ridge in which the distance to rock is about 60 feet, the level being 

 about the same beneath the ridge as on the bordering plain. In the south- 

 west part of the county on the border of the Marseilles moraine records of 

 6 wells were obtained which reach rock at a depth of 100 to 162 feet. The 

 altitude is about 700 feet above tide, or nearly lOO feet above the Kanka- 

 kee River at the city of Kankakee. The rock surface is therefore not much 

 lower than at Kankakee. In the vicinity of Irwin and Dickey and Her- 

 sher rock is usually entered at 40 to 60 feet, but at Buckingham the drift 

 is about 90 feet in depth. Two flowing wells have been obtained at Dickey 

 from beds of gravel and sand at the base of the drift. The underlying rock 

 is shale. 



From Union Hill eastward to Kankakee the drift is generally of slight 

 depth, but from this village westward to the county line its thickness is 50 

 to 100 feet or more. 



IROQUOIS COUNTY. 

 GENERAL STATEMENT. 



Iroquois County is situated south of Kankakee on the east border of 

 the State, and has an area of 1,120 square miles, being exceeded in size 



