Mathematical Modelling of Injection Wells for Flooding Prevention in Jakarta

Flooding problems in Jakarta cannot be handled comprehensively untill today. Various efforts in the short-term programs and long-term programs have been conducted but the results have not been satisfactory so that the flooding problems still threaten every year and the intensity of floods is likely to increase. The objective of this study is to find alternative flood controls, namely, the injection wells, which is cost efficient and resolves the problems effectively. Injection well applications, as new methods, for flood control in Jakarta seem to be a very attractive alternative in respect to both technical, social impact, as well as the financial aspects. In addition to flood control, at the same time, injection wells may prevent seawater intrusion.Mathematical models were developed to represent the magnitudes of flooding problems, to predict the number of injection wells required, implementation schedule, as well as to estimate the investment cost for the application of injection wells. This modelling can be used to simulate the injection wells development plan with reference to the data that has been proven in successful experience, or based on the pilot scale project. Injection wells application for flood control in Jakarta is technically and financially very feasible, not only to cope with flood problems but also to control the sea water intrusion.