Wall is a borough in Allegheny County, Pennsylvania, United States. The population was 519 at the 2020 census.
Main Street
Turtle Creek (Monongahela River tributary)
Turtle Creek is a 21.1-mile-long (34.0 km) tributary of the Monongahela River that is located in Allegheny and Westmoreland counties in the U.S. state of Pennsylvania. Situated at its juncture with the Monongahela is Braddock, Pennsylvania, where the Battle of the Monongahela was fought in 1755.
Turtle Creek, as seen looking north from the George Westinghouse Bridge
Photo of the George Westinghouse Bridge over the Turtle Creek Valley.
B-Y Pond in Trafford, Pennsylvania was formed when the flow of Turtle Creek was shortened to accommodate a railroad, which has since become the rail-trail in the foreground
The Westinghouse Floodgates in East Pittsburgh PA in 2017