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  • U.S. Army Corps of Engineers releases draft programmatic agreement for its operations, navigation and shore protection programs in Florida

    JACKSONVILLE, Fla. - The U.S. Army Corps of Engineers, Jacksonville District is accepting public comments on its Draft Programmatic Agreement for the Corps’ operations, navigation and shore protection programs in Florida.
  • PUBLICATION NOTICE: A Comparison of GenCade,  Pelnard-Considere, and LITPACK

    PURPOSE: The purpose of this Coastal and Hydraulics Engineering Technical Note (CHETN) is to investigate the basic physics and numerical code of GenCade by running a series of simplified test cases and comparing the results to another numerical shoreline evolution model and an analytical solution. The complementary numerical code is the widely used shoreline evolution model LITPACK. The analytical model is the original solution derived by Pelnard-Considere (1956). The underlying assumption in all three approaches is a beach profile of constant shape so that shoreline change is driven by long-shore transport processes and a combination of independent sediment sources or sinks (e.g., sea level change, subsidence). The CHETN presents a descriptive overview of the theory behind the models followed by an inter-comparison using a set of four test cases involving shoreline change in the vicinity of idealized coastal structures and a beach nourishment. GenCade shows good agreement with LITPACK, and both models compare well to the analytical solution for these idealized cases. The GenCade results indicate that the underlying numerical code and basic physical process are consistent with other widely used shoreline modeling systems.

Mississippi Valley Division

Institute for Water Resources

South Pacific Division

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