SUSTAINABLE GROUNDWATER MANAGEMENT MODEL BY THE EXISTENCE OF UNCERTAINTY

In the management of ground water resources, the uncertainty will exist in the parameters of the system and the relationship will intensify the problems associated with water allocation conflicts between the urban, industrial and agricultural interests. Furthermore, the discrepancy and uncertainty which are always associated with groundwater and eventually result in a difficult case to solve. The causes of the presence of uncertainty in groundwater management, among others: (i). Lack of knowledge about the aquifer system, (ii). The characteristics and parameters of the flow and the characteristics of the transportation and (iii) Economic considerations. This paper will focus on the methods and formulations that explicitly combine the uncertainty by using a mathematical model that can help the underground water system management which is beneficial for the supply of clean water that has been contaminated or threatened by chemical pollutants. The main purpose in the stochastic program model in this study is to build a model of groundwater management in an effort to manage the quality and quantity of groundwater so that the objective function of obstacle control can minimize the pumping costs. The results of the research of the non-linear stochastic program model have been built in to a basic framework for the management of groundwater, especially to manage the quantity and quality of groundwater, uncertainty condition (stochastic) is required due to the fluctiating hydraulic and groundwater, while the cost components appeared in this model is to control the excessive groundwater pumping.