| Babak | |
| Pushpin Map: | Indonesia_Lombok |
| Pushpin Map Caption: | Location of river mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | Indonesia |
| Subdivision Type2: | Province |
| Subdivision Name2: | West Nusa Tenggara |
| Subdivision Type3: | Municipalities |
| Subdivision Name3: | East Lombok, Central Lombok, West Lombok |
| Mouth: | Lombok Strait |
| Mouth Coordinates: | -8.6594°N 116.0692°W |
| Basin Size: | 259 km2 |
| Length: | 55 km |
| Source1: | Mount Timanuk |
| Source1 Elevation: | 2575 m |
The Babak River is a river that flows in the island of Lombok, in West Nusa Tenggara, Indonesia.
It originates at Mount Timanuk in East Lombok Regency, with a source elevation of 2,575 meters. It flows in a southwesterly direction, with a parallel drainage pattern, reaching the Lombok Strait at the district of Labuapi, West Lombok Regency. The length of the river's main course is around 55 km.[1]
The watershed of the river covers an area of 259 km2.[1] Due to the highly seasonal flow of the river, which overflows during monsoon season and dries up during the dry seasons, it is considered a "critical watershed".[2] Since 2007, efforts have been made by local communities to restore forests in the river's basin, reducing the impact of erosion and flooding.[3]