THE PROBLEM CITY

Jakarta is the capital of Indonesia and the largest metropolitan area in Southeast Asia with tremendous population growth and a wide range of urban problems. The overall population of the megacity of Jakarta grew in the 20th Century, from about 150,000 in 1900 to about 28 million in 2010. The megacity of Jakarta is also called Jabodetabek, taken from the initial letters of the administrative units of Jakarta, Bogor, Depok, Tangerang and Bekasi.

Floods have become a threat and bring increasing woes for Jakarta residents every year, the severity of flooding in Jakarta is due to the location of Jakarta; located in a lowland area with 43 lakes and 13 rivers. Meanwhile, the peripheries of Jakarta are located in higher areas. The tributaries and basin areas of all rivers in Jakarta are in the peripheries of Jakarta. Thus, Jakarta’s flooding is strongly related with the sustainability of the Jakarta’s peripheries.

i think normalisation river in Pesanggrahan, Angke and Sunter in North Jakarta, build infiltration wells in Jakarta, Bogor, Depok and Tangerang, install sump pumps to prevent accumulation of water in North Jakarta, reducing the use of groundwater and protecting water catchment areas will also decelerate land subsidence and increase the sustainability of Jakarta.