Water management model in Bodri River Basin, Province of Central Java

Basically, in the tropics there are three sources of water, namely rainwater, surface water (river and lake water), and groundwater. From the existing water sources, almost all human daily water needs, such as drinking, bathing and washing, are sourced from groundwater. Uncontrolled extraction of groundwater can cause a variety of consequences on the environment, such as groundwater degradation, seawater intrusion and even land subsidence. Groundwater management efforts need to be carried out so that availability is maintained. The first step in this effort is to formulate a management model as a basis for determining policy. For this reason a dynamic modeling simulation is carried out using the Powersim 2,5c Program. The results showed that the priority of groundwater management efforts in the Bodri River Basin was to reduce groundwater use for the domestic sector which could be done through reducing the rate of population growth and saving groundwater use. Another result of this study is that the recharge of groundwater in the Bodri River Basin is relatively low, so efforts to find alternative sources of water other than groundwater need to be considered. © Published under licence by IOP Publishing Ltd.