WELLS OF DEKALB COUNTY, ILLINOIS. 



603 



the city waterworks stands about 65 feet below the surface. It is prob- 

 able that all obtain water from horizons above the St. Peter as well as from 

 that sandstone. The well at the public square penetrated till 145 feet, 

 below which there was 50 feet of sand and gravel. The well in sec. 33, 

 noted above, penetrated a till, mainly of bluish color, 145 feet; sand, 20 

 feet; blue till, 59 feet. Mr. Elwood's well had about 100 feet of till at 

 surface; the remaining 200 feet was mainly sand and gravel. 



The city water supply at Sycamore is obtained from several flowing 

 wells, which obtain water at a depth of about 65 feet, from gravel beds 

 below blue till. There are several other flowing wells of similar depth along 

 the Kishwaukee River Valley in the vicinity of Sycamore. Wells are usu- 

 ally obtained in this township at depths of 50 to 85 feet, there being appar- 

 ently a sheet of gravel and sand below blue till at this horizon. 



In the western part of Dekalb County, in T. 39, Rs. 3 and 4 E., 

 several wells have been sunk to the rock, as follows: 



Wells in western Dekalb County that reach rock. 



In sec. 1, T. 39, E. 3 E 



Wm. Keast, sec. 4, E. 3 E 



Holtou Brue, sec. 11, E. 3 E 



Theodore Burgh, sec. 19, E. 3 E . . . 

 Theodore Burgh, sec. 19, E. 3 E ... 



John Watson, sec. 28, E. 3 E 



A. W. Howard, sec. 20, E. 3 E 



Andrew Nicholson, sec. 20, E. 3 E 

 H. Gerler, sec. 5, T. 39, E. 4 E 



All these wells, with the exception of Mr. Nicholson's, terminated after 

 penetrating- rock less than 10 feet. But Mr. Nicholson's had penetrated 25 

 feet of rock at the depth above given. A boring in sec. 7, T. 39, R. 3 E., 

 at an altitude about 925 feet, reached a depth of 230 feet without entering 

 rock or obtaining water. Another boring on the same farm obtained water 

 in gravel at a depth of 192 feet. A well in sec. 9 obtained water in gravel 

 at a depth of 172 feet 



In T. 38, R. 3 E., a well in sec. 8 strikes rock at 152 feet, though 

 located on an elevated part of the moraine nearly 950 feet above tide. 

 Several other tubular wells in that vicinity reach rock at depths of less 



