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: Authorizing legislation for the deepening of navigation channels in Mobile Bay specifies that the new work dredged material and material from future maintenance dredging must be placed in an approved open-water disposal site in the Gulf of Mexico. Large mechanical dredges with clamshell buckets are being used for the new-work dredging. Hopper barges are loaded with the dredged material and transported by tug to the disposal site. Mechanical dredging is also the most likely technique for future maintenance. The economic loading of the hopper barges and the potential environmental impact associated with barge overflow during loading are important issues. A field study was therefore conducted to give site-specific information on the loading gains achieved by overflow and the characteristics of the overflow for conditions in Mobile Bay. Keywords: Barge scow, Clamshell, Dredged material, Dredging, Waste, Mobile Bay, Alabama, Overflow.

Evaluation of Loading and Dredged Material Overflow from Mechanically Filled Hopper Barges in Mobile Bay, Alabama