Abstract: Optimized land-use plays an important role in the performance of planing which are urban planing, industrial district, and likelarge engineering projects. Reliability of land-use planning is a function of an elaborated site selection study, which depends on thatof geological to geotechnical model studies. In this connection, identification of geomorphology, geology, physiography & climate,hydrogeology, engineering geology, seismicity and geotechnical characteristics of a delineated area forms an essential work. Decision-maker can only assesses the project in terms of timing, cost and environmental issues when convent data are available in land.Harbor, airport, organized industrial district and free zone projects are being conducted in Lower portion of the Filyos Valley. Coordination of such large-scale engineering projects taking the aforementioned criteria in account has significant role to optimizethe land-use.