08/14/2026
⚠️ Important Notice for Allegheny River Boaters
🚨 Lock & Dam 4 will be completely closed from September 14 through November 20, 2026 for emergency repairs.
There will be a full river closure at Lock 4, so plan your boating trips accordingly. Please monitor Channel 13 for updates during the closure.
📍 Allegheny River — Mile 24.2
📅 Sept. 14–Nov. 20, 2026