WELLS OF OGLE COUNT 5T, ILLINOIS. 607 



At Davis Junction a town well 53 feet in depth enters rock at 18 feet, 

 and the rock outcrops in many places toward the south. West and north 

 from Davis Junction wells usually penetrate 50 to 80 feet of drift. A well 

 made by F. H. Baker, li miles west of Davis Junction, is 190 feet in depth 

 and strikes rock at about 80 feet. Northeast and east from this village wells 

 reach a depth of over 100 feet without entering rock, this being the position 

 of the old valley of Rock River referred to above. The deepest well noted 

 is at Mr. Kerr's, in sec. 11, which obtains water from gravel at a depth of 

 120 feet. There appears to be a heavy sheet of till along this preglacial 

 valley, wells 80 to 120 feet in depth being mainly through that deposit, 



At Monroe, which is situated on the east side of the old Rock River 

 Valley, rock is usually struck at 5 or 10 feet, but Mr. Tyler's well pene- 

 trated 44 feet of drift before entering rock. The railway cutting immediately 

 west of Monroe also exposes drift to a depth of over 30 feet. 



Records of several wells were obtained in sees. 27, 28, 29, 30, 31, 32, 

 33, and 34, T. 42, R. 2 E., which are about 30 feet in depth, and but one 

 well enters rock. East from these sections as far as the county line rock is 

 usually entered at a depth of 10 to 20 feet. 



Two wells in sec. 2, T. 41, R. 2 E., enter an old soil below till at a 

 depth of 20 to 22 feet, which is thought to separate the Iowan sheet from 

 an underlying older one. This soil in all probability represents the Sanga- 

 mon interglacial stage. About 2 miles south from these wells, at James 

 Ashbrook's, a black muck was struck at 67 feet, which yields an inflammable 

 gas. The altitude at each of these wells is about 780 feet above tide and 

 the buried soils are probably all referable to the same stage. 



In the vicinity of Lindenwood rock is struck at slight depth (12 to 25 

 feet). The preglacial valley of Rock River appears to lie entirely north 

 and east of this village. A well at William Stocking's, near this village, in 

 sec. 1, T. 41, R. 1 E., reached a depth of 100 feet without entering rock. 

 It is probably over the line of a tributary of the Rock River Valley, for 

 neighboring wells enter rock at 12 to 30 feet. 



In the vicinity of Kings Station, and thence westward j)ast Paines 

 Point, wells usually enter rock at about 10 feet and obtain water at 30 to 

 50 feet. 



At Rochelle the public water supply is obtained from springs issuing 

 from an old rock quarry. Wells are usually obtained at 30 or 40 feet and 



