This paper describes the numerical modeling of waves, currents, and sediment transport at Pillar Point Harbor, CA. The Coastal Modeling System (CMS), developed at the US Army Engineer Research and Development Center (ERDC) with fully integrated wave, current, and sedimentation models (Demirbilek and Rosati, 2011), was applied to calculate the coastal processes at the harbor and adjacent beaches. The model simulations include both the present-day bathymetry with breakwaters and pre-harbor condition without breakwaters. The model results indicate the construction of Pillar Point Harbor in 1960s have adversely affected local sediment transport and shoreline change while aged breakwaters have caused more sand accumulation inside harbor.
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