![Aerial Image of Lock and Dam 7, Allegheny River](https://webarchive.library.unt.edu/eot2008/20090109020412im_/http://www.lrp.usace.army.mil/nav/images/ld7a_aerial.jpg)
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Lock and Dam 7
Kittaning, PA 16201-0874
724-543-2551
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Location
Lock and Dam 7 is located in Armstrong county across the river from
Kittanning, PA
History
Lock and Dam 7 was built from 1928-31, with the lock opening in
1930.
Project
Information
Lock and Dam 7, like all navigation facilities on the Allegheny
River, consists of a single lock chamber and a fixed crest dam.
This type of dam is basically a concrete weir or wall across the
river which keeps the river channel upriver of the project deep
enough for navigation -- about 9 feet or more. Water which flows
over this type of dam cannot be controlled locally. Consequently,
it cannot provide any control over flood waters. An incidental benefit
derived from the pool formed by the dam is the availability of a
source of municipal and industrial water.
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