A model for simulating the migration of tidal inlets, called ShorelineS, has been improved to include littoral sediment bypassing and an ebb-tidal delta in order to more accurately predict the rates and patterns of inlet migration. The model was tested on the migrating Ancão inlet in Portugal from 1998 to 2015, and the resulting shoreline evolution agreed with observations. Widely accessible satellite images and shorelines extraction tools allow for the estimation of the bypassing fractions. By including the effects of littoral sediment bypassing and the ebb-tidal delta, the model was able to more accurately predict the evolution of the coastline and the migration of the inlet amidst natural and anthropogenic factors.
