WELLS OF FULTON COUNTY, ILLINOIS. 687 



the underlying rock. Similar conditions prevail at the neighboring- village 

 of Fairview, and also at Avon, in the northwest part of the county. Fire 

 protection is obtained at Avon and Farmington by pumping from wells to 

 tanks. 



The city of Canton obtains its public water supply from two deep 

 wells, one of which reaches a depth of 2,500 feet and the other 1,646 feet. 

 The latter terminates in the St. Peter sandstone, but the former may reach 

 the Potsdam sandstone. Water is found in the Galena limestone at 1,100 

 to 1,300 feet, as well as in the St. Peter sandstone and lower strata. The 

 deeper well, with a diameter of but 4 inches, has an estimated capacitv of 

 125 g-allons a minute. The shallower one, with a diameter of 6 inches, will 

 yield 260 gallons a minute. The former well is cased only 90 feet and has 

 a head 630 feet above tide, or about 30 feet below the surface. The latter 

 well is cased 797 feet and has a head 615 feet above tide, which is 15 feet 

 above the surface, this well being located on ground about 60 feet lower 

 than the other. The following record of the strata penetrated by the shal- 

 lower well was published in a Canton paper at the time of the completion 



of the well: 



Section of a deep well at Canton, Illinois. 



Feet. 



Surface 14 



Bine shale 29 



Gray shale - 45 



Blue shale 40 



Coal - 1 



Fire clay 6 



Blue shale 35 



Gray shale 22 



Coal 2 



Slate 12 



Shale 55 



Limestone, sandstone, and shale 65 



Shale 15 



Black limestone 7 



Limestone, flint, sandstone, shale, white marl • 192 



Shale .' 225 



Limestone 63 



Limestone and shale (mixed) 272 



Trenton limestone (water bearing, flow) 265 



Limestone, sandstone, shale, etc 100 



St. Peter sandstone (water hearing, flow) 241 i 



In the above section the first 247 feet of rock should perhaps be 

 referred to the Coal Measures ; the next 279 feet are probably Eocarbon- 

 iferous limestone, shale, etc.; the following heavy bed of shale (225 feet) is 



