Geography

Geography
Jakarta is located on the northwestern coast of Java, at the mouth of the Ciliwung River on Jakarta Bay, which is an inlet of the Java Sea. Jakarta is a lowland area with average height around 7 meter above the sea level. Based on Governor Decree in 2007, No. 171, the area of DKI Jakarta province consists of 662.33 km2 land area and 6,977.5 km2 sea area. It has more than 110 islands, which spread through out the Kepulauan Seribu, and has 27 rivers/drains/canals used as water sources, fishery and urban businesses. Most of the rivers flow from the hilly southern parts of the city northwards towards the Java Sea. The most important river is the Ciliwung River, which divides the city into the western and eastern principalities.
The northern part of Jakarta is constituted on a plain land, approximately eight meters above the sea level. This contributes to the frequent flooding. The southern parts of the city are hilly.
In the northern part there is a coastal area which extended around 35 km from west to east. This shore is a place where 9 rivers and 2 canals run into. The Southern and Eastern parts is Jawa Barat (West Java) Province, and Western part is the Banten Province, and Northern part is Sea of Java.
Toward the south and east side of Jakarta there are some lake/swamp by which the total area reached 121.40 hectares. These areas are suitable for water reservation region and also ideal for settlement due to its fresher climate. Furthermore, manufacturing activities are mostly occurred in Jakarta Utara (North Jakarta) and Jakarta Timur (East Jakarta), while business and office administration activities are mostly occurred in Jakarta Barat (West Jakarta), Jakarta Pusat (Central Jakarta), and Jakarta Selatan (South Jakarta).