WELLS OF DEKALB COUNTY, ILLINOIS. 601 



feet. Another in the same section, at Mr. Keague's, has a depth of 110 

 feet. 



At Genoa, in the northeast township of the county, the wells are 25 to 

 60 feet in depth and obtain their supply from gravel below till. A well in sec. 

 26, near New Lebanon, at an altitude about 850 feet above tide enters rock 

 at 90 feet, and has a depth of 122 feet. The south border of this township 

 is occupied by the outer moraine of the Wisconsin drift, but no records of 

 deep wells were obtained. In the township to the south, however, records 

 of several wells were obtained which show the drift to reach a thickness of 

 150 to 200 feet or more. 



For example, in sec. 9., T. 41, R. 5 E., a well 156 feet in depth does not 

 reach rock and is mainly through blue till. The altitude is about 900 feet. 

 At Mr. Marshall's, in sec. 11, at a similar altitude, a well has a depth of 111 

 feet. At John Haine's, in sec. 2, a well is obtained at 86 feet. Near the 

 center of the township, in sec. 15, Mr. E. Devine made three unsuccessful 

 borings for water to a depth of about 200 feet without reaching the bottom 

 of the drift. The altitude at the wells is about 875 feet. Four wells in sec. 

 25 each have a depth of about 125 feet, and a fifth well has a depth of 170 

 feet. They are all mainly through blue till, and none enter the rock. In 

 sees. 35 and 36 three wells have a depth of about 100 feet, a fourth has 

 a depth of 148 feet, and a fifth a depth of 151 feet, all mainly through 

 blue till. 



In T. 41, R. 4 E., records of wells show the depth of drift to exceed 

 100 feet, while one well in sec. 31 reaches a depth of 113 feet without 

 reaching rock. This well is thought to have passed through an old soil at 

 about 80 feet. Another well in the same section has a depth of 112 feet. 

 The wells of this township are mainly through blue till, but one, in sec, 11, 

 is reported to have passed through 35 feet of yellow till and 10 feet of sand 

 before entering blue till. The well has a depth of 98 feet, and terminates 

 in a cemented gravel. 



A portion of township 41, R. 3 E., is outside the above-mentioned 

 morainic system and wells there are seldom more than 80 feet in depth. A 

 well at Dustin post-office, 77 feet in depth, is reported to have struck rock 

 near the bottom. Another, in sec. 8, 76 feet in depth, penetrates about 2 feet 

 of rock at bottom. At a schoolhouse in this section, however, a well strikes 

 rock at 12 feet. The altitude at each of these wells is about 825 feet 



