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An Engineering Evaluation of Fine Sedimentation at the Mayport Naval Basin, Mayport, Florida

by John R. Headland, Naval Facilities Engineering Command, Alexandria, United States,



Document Type: Proceeding Paper

Part of: Coastal Sediments

Abstract:

The Mayport Naval Basin is located near the mouth of the St Johns River in northeastern Florida, U.S.A. A total of 16.8 million cubic yards of fine sediment were dredged from the harbor during the period 1954 through 1987 corresponding to an average annual siltation rate of 500,000 cubic yards per year (cy/yr). Present maintenance dredging costs are on the order of $1.2 million per year, but are expected to increase sharply in the future as the capacity of upland disposal areas are exhausted. This paper presents the results of a study conducted in an effort to: (1) evaluate the basic causes of siltation, and (2) examine proposed remedial measures to reduce dredging costs.

Subject Headings: Sediment | Dredging | Silt | Rivers and streams | Ports and harbors | Benefit cost ratios | Basins | Florida | United States

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