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In this article, sediment processes and shoreline changes at Lengeh and Kong ports coastline are investigated. Comprehensive studies on effective parameters on sediment processes have been performed and coastal sediment transport rate in the area is estimated. For this purpose a conceptual model has been envisaged and the empirical and numerical models, calibrated and validated based on the conceptual model. Relation between potential of sediment transport and activated sediment is obtained by introducing “sediment capacity coefficient” based on historical sedimentation and shoreline changes. The coefficient is estimated 0.3 and 0.13 at the eastern coasts of Kong and Lengeh port, respectively. Among the aim of the article is introducing a sound procedure for a comprehensive sediment studies based on all evidences and information to utilize results of empirical and numerical models in an integrated approach which lead to identifying sediment capacity coefficient.