Editing Allegheny River (section)

===Locks, dams and bridges===
{{further|List of crossings of the Allegheny River}}
[[File:Allegheny Islands State Park, C.W. Bill Young Lock and Dam.jpg|thumb|The eastern part of [[Allegheny Islands State Park]] and the [[C. W. Bill Young Lock and Dam]] (No. 3) on the Allegheny River]]

Several locks were built in the early 20th century to make the Allegheny River navigable for 72 miles upstream from Pittsburgh to [[East Brady, Pennsylvania|East Brady]].

The Allegheny River has eight [[Lock (water navigation)|locks]] and [[fixed-crest dam]]s<ref>{{Cite web |url=http://www.fishandboat.com/Zone1/Documents/fixedCrestDams.pdf |title=Know the Rivers! |website=fishandboat.com |quote=All dams on the Allegheny River are Fixed Crest}}</ref> numbered two through nine: Allegheny River Lock and Dam No. [[Allegheny River Lock and Dam No. 2|2]], [[Allegheny River Lock and Dam No. 3|3]], [[Allegheny River Lock and Dam No. 4|4]], [[Allegheny River Lock and Dam No. 5|5]], [[Allegheny River Lock and Dam No. 6|6]], [[Allegheny River Lock and Dam No. 7|7]], [[Allegheny River Lock and Dam No. 8|8]], [[Allegheny River Lock and Dam No. 9|9]] which form corresponding reservoirs.

The river is also impounded by the [[Kinzua Dam]] in northwestern Pennsylvania, resulting in the [[Allegheny Reservoir]] also known as Kinzua Lake and Lake Perfidy among the Seneca. The [[Seneca Pumped Storage Generating Station]] is associated with Kinzua Dam.

Numerous bridges and tunnels span the river throughout its course. The [[Allegheny River Tunnel]], utilized by [[Pittsburgh Light Rail]], went into service in 2012.