284 



NEW YORK STATE MUSEUM 



waters is 1600 to 1700 feet above tide. The. catchment area is 145 

 square miles. 



Olean creel'. The principal tributary of this stream is the 

 Ischua creek, which rises in the northern part of Chautauqua 

 county and, with the main Olean creek, flows south, entering the 

 Allegheny river at Glean. The elevation at its mouth is 1433 feet y 

 while the headwaters lie at an elevation of about 1800 feet above 

 tide. None of these streams is important for water power. 



The topography of the catchment areas of all these streams 

 tributary to Allegheny river is rugged. With the exception of a 

 portion of the Allegheny river itself, and some of its main tribu- 

 taries, the slopes are several feet to the mile. The slope of the 

 main Allegheny river is slight. 



The Tunungnant creek enters the Allegheny river four miles 

 south of Carroll ton. from Pennsylvania. 



Susquehanna river. The headwaters of the north branch of the 

 Susquehanna lie chiefly in the State of New York, the catchment 

 area in this State being taken at 6267 square miles. The main 

 stream may be considered as rising in Otsego lake, from which it 

 flows first southwesterly, then westerly with a short portion of its 

 course south of the Pennsylvania line. It finally leaves New York 

 State in Tioga county at Waveriy. The Susquehanna, while one 

 of the large rivers of New York, is not at all important as regards 

 water power. The main river and most of its tributaries in New 

 York flow through a rolling country with fairly uniform declivity. 

 While utilized for small powers in many places, thus far there 

 are no extensive developments on either the main stream or its 

 branches, except at Binghamton, where considerable water power 

 is utilized. The slope of the stream in and near New York State 

 is shown by the following elevations, in feet, above tidewater: 



Susquehanna River System 



Feet 



At Towanda, a few miles south of the State line 

 A t Athens, on Chemung river, near the Slate Line. 

 At Otsego lake 



TOO 

 744 

 1,193 



