Dredging

Florida isn't getting high speed rail, but it will soon have a deeper port that's able to accept more shipments.
Mar 20, 2011   Transportation Nation
Plans to construct a new cargo port near Venice has some conservationists up in arms. They say the plans would exacerbate rising water levels and further endanger the flood-prone ancient city.
Sep 13, 2009   The Guardian
For the last ten years, the Army Corps of Engineers has been dredging the bottom of Boston Harbor in an effort to make more room for larger cargo ships. Dredging is almost complete on the project.
Oct 27, 2008   The Boston Globe