Abstract
Recently issues on water resources are highlighted because, especially in developing countries, water demand has been increasing as population growth and involved food production growth. Preservation of groundwater resources are needed as a valuable fresh water resource in the world. Japanese government has been engaging to support such water resources issues with providing official development assistance schemes for water shortage area in south-eastern Asia and Africa. Sustainability is very important to implement development project successfully. The area with insufficient groundwater development potential has been selected as project areas and evaluation of sustainability of groundwater development planning becomes important for the project. This paper describes results of groundwater development study in eastern Indonesia. Groundwater recharge evaluation is carefully introduced to define the amount of discharge of wells in the project. Saline water intrusion is also considered on the study.