WELLS OF ROCK ISLAND COUNTY, ILLINOIS. 



Table of wells in Rock Island County — Contiued. 



621 



Owner or loeati< 



Sec. 12, T. 18, R. 1 E . . . . 



Blurt' east of Hampton. 



Upland west of Carbon Cliff.. 

 Rock Island near Thirty-sixth 

 street. 



Moline, Seventh avenue and 



Fifth street. 

 Sees. 7 and 12, T. 17, Rs. 1 and 



2 W. 

 Sec. 17, T. 16, R. 2 W 



Taylor Ridge 



W. S. Parks, sec. 15 



W. H. Wheaton, sec. 34 



Illinois City 



Sec. 32, T. 15, R. 5 W 



Altitude 

 (above tide). 



650 

 625 



Feet. 

 100 



Loess, 30 feet; till, etc., 70 feet; sandstone at 

 bottom. 



Loess, 30 feet; till, blue near bottom, 50 feet; no 

 rock exposed. 



Loess, 25 feet; till, 15 or 20 feet. 



Near base of bluff; yellow till, 5 feet-; black muck ; 

 1 foot; brown till, 7 feet; blue till, 4 feet; black 

 calcareous fossiliferous silt, 8 feet; black muck, 

 4 feet; green clay with local pebbles, 5 feet; 

 shale at bottom. 



Loess beneath pebbly clay at 30 feet. 



Ravines expose loess 45 feet; black soil, 2 feet; till, 



12 feet; fossiliferous loess, 6 feet. 

 Loess, 15 feet; yellow till, 15 feet; blue till, 73 feet; 



sandstone, 2 feet. 

 At village well, loess, 15 feet; till, 67 feet; sand at 



bottom. 

 Rock struck at 140 feet. 

 Mainly till; no rock struck. 

 Loess, 20 feet; black soil, 3 to 5 feet; till, 15 or 20 



feet. 

 Ravines expose loess 25 feet; black soil, 2 or 3 feet; 



till, 90 feet; fossiliferous loess, 12 feet. 



The public water supply at Moline and Rock Island is pumped from 

 the Mississippi River. Several artesian wells have been sunk at these cities; 

 also one at Carbon Cliff, and one at Milan. Prof. J. A. Udden has collected 

 a large amount of data concerning the wells and examined the drillinos 

 from several of them. The results of his investigations are presented in 

 the Seventeenth Annual Report of this Survey. 1 The public water supply 

 at Milan is from an artesian well, 1,157 feet in depth, which has a head 68 

 feet above the surface. 



i Part II, pp. 829-849. 



