JEFFERSON COUNTY. 717 



low-water mark. The elevations of the different stations of the railroad 

 above Lake Erie and the ocean are as follows : 



Above Above 



Lake Erie. the ocean. 



nammondsviUe 115 (+575=) 690 



YellowCreek 121 696 



McCoj's Ill 686 



Sloan's 125 700 



Steulienvillo 90 665 



Portland 90 665 



The altitudes of the stations on the P. C. & St. L. railroad above Lake 

 Erie are as follows : 



FEET. 



Steubenville, Washington street 155 



Mingo Station 94 



Gould's Station 106 



Tnnnel No. 1 260 



Smitlifield 200 



Tunnel No. 2 370 



Reed's Mill 233 



Kellej's Station 268 



Tnnnel No. 3 490 



Bloomfield Station 328 



Unionpoit 373 



County line 418 



According to Blickensderfer's profile of the P. C. & St. L. Railroad, the 

 highest land in Jefferson county is the summit of the hill one mile east 

 of Bloomfield, eight hundred and sixty-one feet above Lake Erie. 



The minor streams of the county are all tributaries of the Ohio, flow- 

 ing from the west, and having their sources on the highlands near the 

 county line. In their eastward flow the valleys are gradually deepened 

 until, when they join the Ohio, they are brought down to its level. 

 These streams are Yellow Creek, Island Creek, Wells Creek, Cross Creek, 

 Salt Run, Rush Run, and Short Creek. The interlocking branches of 

 these streams form a network of minor valleys which render all the sur- 

 face rolling, and in some instances, where the declivities are abrupt, it 

 may be called broken. There is, however, in the county little land that 

 can not be profitably used for agricultural purposes. 



A marked feature in the topography of the county is the erosion of the 

 Ohio valley below the present stream. In many parts of this report the 

 old buried channels which traverse the State and country are referred to, 

 and the fact that the Ohio flows in a trough excavated from one hundred 

 to one hundred and fifty feet below the bottom of the present river is 

 mentioned ih the report on Columbiana county and elsewhere. 



