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South Jetty Scour Hole Stabilization, Ocean City, Maryland

by Gregory P. Bass, US Army Corps of Engineers, Baltimore, United States,
Edward T. Fulford, US Army Corps of Engineers, Baltimore, United States,



Document Type: Proceeding Paper

Part of: Coastal Engineering Practice

Abstract:

Formation of a scour hole along the inlet side of the South Jetty at Ocean City occurred after jetty construction as a result of ebb tidal flow in the inlet. Analysis of historical bathymetry surveys of the inlet indicated that this area increased in depth from about 8-10 feet deep during the period 1939-1940 to 40-50 feet deep in 1982. To stabilize this channel section and to prevent eventual failure of the outer section of the south jetty, the scour hole was filled with sand hydraulically to elevation -30.0 feet NGVD and then armored with a protective blanket composed of several layers of 50 to 100 pound stone. In addition, an armored stability berm was placed on the inlet side of the jetty. Analysis of post-construction surveys indicates that the scour hole has been stabilized. This paper addresses the design techniques used in the project design and the post-construction performance of the project.

Subject Headings: Jetties | Coastal protection structures | Tides | Scour | Inlets (waterway) | Ocean engineering | Construction management | Maryland | United States

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