Sungai Cimanuk, Cimanuk, Tji Manuk, Tji Manoek, Tjimanuk, Tjimanoek
|⁃ location||Garut Regency, West Java|
|Indramayu Regency, West Java|
|Length||180 km (110 mi)|
|Basin size||3.584 km2 (1.384 sq mi)|
The whole parts of this river is located within West Java province. The river runs from south to the north and drained to Java Sea near the town of Indramayu. There are two river mouths: Cimanuk Lawas ("Old Cimanuk"; Coordinates: ) and Cimanuk Anyar ("New Cimanuk"; ).
The river flows in the western area of Java with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification). The annual average temperature in the area is 25 °C. The warmest month is October, when the average temperature is around 28 °C, and the coldest is February, at 21 °C. The average annual rainfall is 2465 mm. The wettest month is January, with an average of 461 mm rainfall, and the driest is September, with 6 mm rainfall.