South Jakarta’s topography is defined by its role as a catchment area for water flowing from the southern highlands (Bogor and Depok) toward the Java Sea.
- **Rivers:** The municipality is intersected by several major rivers, most notably the **Ciliwung River**, the **Pesanggrahan River**, and the **Krukut River**. These waterways are vital to the city's drainage, though historically prone to flooding during the monsoon. - **Lakes (Setu):** South Jakarta contains several natural and man-made lakes used for conservation and recreation. **Setu Babakan** and **Setu Mangga Bolong** in Jagakarsa are the most prominent, offering scenic water views, traditional boating, and serving as the focal point for the surrounding Betawi cultural village.
