WELLS OF BOND COUNTY, ILLINOIS. 751 



INDIVIDUAL WELLS. 



Wells in the vicinity of Sorento, in the northwest part of the county, 

 often reach a depth of 30 feet and penetrate the following beds: 



Generalized section of wells in northwestern Bond County, Illinois. 



Feet. 



White clay - - - - ^ 



Yellow till - 12 - 15 



Blue till 10 " 13 



Near Old Ripley the drift is about 50 feet in depth, but only a few 

 wells reach the rock. Its structure is like that at Sorento. 



At Greenville wells are usually obtained at 35 feet in sand and gravel 

 below clay. The public water supply is from a well 22 by 35 feet, in the 

 bottom of which several tubular wells have been sunk to depths of 10 or 

 20 feet. There are also two 6-inch wells sunk near the large well, which 

 reach a depth of 45 feet. A coal boring at Greenville, reported in the 

 Geology of Illinois, penetrated 204 feet of drift, as follows: 



Section of coal borinq at Greenville, Illinois. 



Feet. 



Soil and clay 10 



Saud and clay - 20 



Coarse sand 10 



Gravel - -° 



Cemented gravel (possibly till) - 90 



Clay and saud 20 



Saud 8 



Light clay aud sand ■ 8 



Dark clay and sand 18 



Total drift - 204 



A well in the vallev of Shoal Creek, 3 miles above Greenville, is 

 reported to have reached rock at 87 feet and to have been sunk entirely 

 through blue clay. Wells on a drift ridge in the city of Greenville in some 

 cases reach a depth of 80 or 90 feet, in which the upper 20 feet is largely 

 clay and the remainder sand and gravel. 



At Smithboro a coal boring reported in the Geology of Illinois pene- 

 trated 95 feet of drift, as follows : 



Section of coal boring at Smithboro, Illinois. 



Feet. 



Soil and clay - 1° 



Hardpau (probably till) 60 



Blue clay 10 



Hardpan 10 



Total drift 9 5 



