Lock and Dam 4 is one of eight major river facilities on the Allegheny River. Visitors can view locking operations from the parking area or while touring the facility.
Lock and Dam 4 is located in Natrona, PA.
1 River Avenue
Natrona PA 15065-2609
724-224-2666
Allegheny4@usace.army.mil
USACE - US Army Corps of Engineers