PERFORMANCE OF A JETTY-WEIR INLET IMPROVEMENT PLAN

J.A. Purpura, B.C. Beechley, C.W. Baskette, J.C. Roberge

Abstract


Comprehensive monitoring has been carried out since 1970 to determine the performance and effects of a navigation and inlet stabilization project at Ponce de Leon Inlet, Florida. The improvement plan at the tidal inlet included construction of two jetties, a weir sand by-pass system, and dredging of a navigable channel (Figure 1). An evaluation was made of the general current patterns, the relative refracted wave energy distribution, and the volumetric beach and hydrographic fluctuations associated with the inlet. An analysis of this data was used to interpret the dramatic and unexpected changes which have resulted along the adjacent coastline and within the inlet after the completion of the inlet improvements.

Keywords


jetty; weir; jetty-weir; inlet; inlet improvement

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