1876.] 



155 



[Lesley. 



BENCH MARKS. 



On Flow Line of Highland Ave- 

 nue (new) Reservoir 



On Flow Lineof Herron Hill(new) 

 Reservoir 



On Flow Line of Brilliant Hill 

 (new) Reservoir 



City Datum. 



365 

 560 

 235 



Ocean Level. 



1064.20 



1259.20 



934.20 



CCCI. Allegheny Valley B. B. 



Levels on the Allegheny Valley R. R., from Kittanlng to Oil City, were copied 

 from notes in possession of Mr. Wainwright, Assistant Engineer, Engineer's 

 Office, Allegheny Valley R. R., Pittsburgh, Pa. 



This portion of the road was leveled during the summer of 1875. The eleva- 

 tion at Kittanlng was assumed to be 500' above tide. The difference between the 

 true elevation and the elevation assumed at the Red Bank intersection of the 

 Bennett's Branch R. R. with the main line, was made to be 281'. This must be 

 incorrect. 



Great difficulty has been experienced in connecting the levels of this road 

 with those of others in Northwestern Pennsylvania, and no reliance can be 

 placed upon their exactness. They are evidently too low, and the error seems 

 to be in the 284'feet diflFerence; and therefore in the Bennett's Branch Exten- 

 sion Table, CCCII. 



For instance, the level at Parker's City is, by this Allegheny Valley R. R. Ta- 

 ble, 579.2 + 284 = 863'; whereas, Mr. Lucas makes it 909', or 46 feet higher. .See Sec- 

 tion inCarll's Report of Progress, 1874. 



Again, at Franklin this Table gives 678.5 + 284 = 963'; whereas. Lake Shore 

 and Michigan Southern (Franklin Division) Table CCCLXII makes it 444.06 (-[- 

 Lake Erie) + 573 = 1017', or 54 feet higher. 



Again, at Oil City this Table gives 983'; whereas Oil Creek and Allegheny 

 Valley R. R. (CCCIV) gives 995', or 12' higher. And the same in CCCLXXXVII 

 by the Franklin Branch of Atlantic and Great Western. 



The levels of points from Pittsburgh up to Kittanlng could not be obtained 

 by any efforts. There seem to be no records, profiles or notes of the levels of 

 this part of the line. Pittsburgh is 745' by Table I ; Gardner makes it 746', and 

 so does Pittsburgh, Fort Wayne and Chicago R. R., Table CCLXXIII. 



STATIONS. 



Pittsburgh 



Sharpsburgh 



Hulton 



Logan's Ferry 



Parnassus 



Tarentum 



Chartiers 



Soda AVorks 



West Penn Junction (o) 



XXYI 



White Rock 



Assumed 



Tide. 



Ocean Level. 



(745) 



(778) 



o With West Penn. R. R. east to Philadelphia. 



