Watershed based model for water allocation

Abstract

Abstract The city of Bekasi is located downstream of the Bekasi watershed, which currently cannot reach the target of access to clean water. Access to clean water in Bekasi City according to USAID (2017) only reaches 31.44%, thus it has not yet reached the target of Sustainable Development Goals (SDGs). Moreover, many upstream areas of the watershed have been grown as a satellite city that plans to harvest more water to meet their needs. And also urban and rural areas in the whole watershed have population growth that needs a water supply. Increasing water demand due to population in upstream and downstream areas can cause water conflicts if not managed wisely. A water allocation study by making a model of the Bekasi watershed could explain better water allocation solution. This study’s purpose is to make a model for meeting the raw water demand of both urban and rural areas within Bekasi watershed. The more allocation of water in the upstream part of the Bekasi watershed (Sentul City) shows a decrease in the long-term water availability of water supply in the downstream watershed (Bekasi City). The development area of the upper part of Bekasi watershed should be evaluated properly and policy settings for water allocation can be analyzed using the dynamic model built.