NUMERICAL SIMULATION OF FLOODING IN JAKARTA AND EVALUATION OF A COUNTER MEASURE TO MITIGATE FLOOD DAMAGE

Abstract

Floods in Indonesia are considered to be one of the major natural disasters. Jakarta City in Indonesia has experienced many floods in the past, such as those in 1996, 2002, 2007 and 2013. In this paper several problems causing the floods in Jakarta were discussed and a flood inundation model was applied to the 2007 and 2013 flood events. Also, a counter measure to increase the flood flow carrying capacity of the Ciliwung River was evaluated by a numerical simulation. As a result of analysis, it was found that the applied flood inundation model relatively well reproduced the flood inundation situation in Jakarta. Further, the counter measure that increased the flood flow capacity of the target sections by 150% was found to reduce the flood inundation volume by nearly 15%. However, considering the fact that there are still many areas remaining inundated, it would also be needed to investigate the effects of other rivers and several other factors contributing to flooding in Jakarta.