Bolsa Bay, California, Proposed Ocean Entrance System Study. Report 2. Comprehensive Shoreline Response Computer Simulation, Bolsa Bay, California

This report describes an application of the shoreline change numerical odel GENESIS in the assessment of potential shoreline impacts resulting from the construction of a structured inlet entrance system at Bolsa Chica, California. The methodology of shoreline change modeling, including the preliminary steps of data collection, analysis, and preparation for input to the shoreline change model is discussed, as well as interpretation of model results. In this study, three simultaneous independent wave sources (Northern Hemisphere swell, Southern Hemisphere swell, and locally generated wind sea) were used to drive the shoreline change model. In addition to estimating potential shoreline impacts, three project impact mitigation design alternatives were quantitatively investigated. Keywords: Beach erosion; Coastal processes; Shoreline change; Southern California. See also Report 4, ADA216314.