The aim of the study is to make an assessment of utilizable water resources looking at the inflow-outflow process in the South-Western coastal region of Bangladesh. The study focuses specially on irrigation adoption based on surface water availability in order to propose an effective planning, and on efficient management of the water resources.

Coastal environment and morphology are relatively less suitable for traditional crop cultivation because of soil and water salinity, inefficient water management system including lack of proper maintenance of water management infrastructures, siltation of outfall canals and canals within polders resulting loss of drainage capability, and so on. As availability of fresh water is a limited resource mainly in the lean period, it is very important to assess how efficiently water can be managed considering development of more conservation sources for rain water harvesting for use in the lean period, as well as increased cropping intensity and quality of water.