The Federal government has much improved the navigation of the Monongahela and Allegheny rivers and is committed to a project for slack-water navigation on the Ohio which is expected to give Pittsburg communication with the sea by vessels drawing 9 ft.
The area is swept by strong tidal currents making this site a slack water dive.
Even heading through at slack water there is always a sense of menace !
Very tidal, slack water only and in exposed position so calm conditions needed.
