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Navigation projects located at coastal inlets are designed, operated, and maintained through complex morphologic features. These features evolve with time scales and rates ranging from short as in the response to storms to the gradual change exceeding a century as caused by normally occurring waves and currents. Because the hydrodynamics, inlet morphology, navigation channel, and longshore sediment transport are connected, consequences of navigation project maintenance and natural processes must be estimated to minimize channel dredging and to promote sediment bypassing, either by natural processes or through dredging-related activities. In addition to gradual long-term trends, near-discontinuous and periodic changes can occur as a result of storms, changing weather patterns, dredging, and modifications to jetties.
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