Asem River
Asem River (Ci Asem) is a river in northern West Java province on Java island, Indonesia.[1] The river rises on Mount Tangkuban Perahu and discharges into the Bay of Ciasem, Java Sea, traversing Ciasem, Subang Regency, around 90 km east of the capital Jakarta.[2]
| Asem River Ci Asem, Sungai Ciasem, Ciasem, Tjiasem, Tji Asem  | |
|---|---|
![]() Location in Java ![]() Asem River (Indonesia)  | |
| Location | |
| Country | Indonesia | 
| Physical characteristics | |
| Source | Tangkuban Perahu | 
| • location | West Java | 
| Mouth | Java Sea | 
 • location  | Subang Regency | 
Hydrology
    
Asem river is one of the three main rivers in the Subang Regency.[3] There are a total of 21 rivers and 61 tributaries in the watershed area of (Daerah Aliran Sungai/DAS) Ciasem of 731.091 km2. Compared to the other two main rivers - Ci Punegara and Ci Lamaya - Asem river and its many tributaries all flow only within the Subang Regency. The river has a total length of 60 kilometer until northern coast.[3]
Geography
    
The river flows in the northwest area of Java with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification).[4] The annual average temperature in the area is 25 °C. The warmest month is September, when the average temperature is around 28 °C, and the coldest is July, at 24 °C.[5] The average annual rainfall is 2810 mm. The wettest month is January, with an average of 454 mm rainfall, and the driest is September, with 14 mm rainfall.[6]
References
    
- Ci Asem at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
 - Rand McNally, The New International Atlas, 1993.
 - Sering Menelan Korban Jiwa, Inilah Catatan Kelam Sungai Ciasem yang Misterius dan Melegenda - Soeara Rakjat. December 17, 2016.
 - Peel, M C; Finlayson, B L; McMahon, T A (2007). "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11: 1633–1644. doi:10.5194/hess-11-1633-2007. Retrieved 30 January 2016.
 - "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
 - "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.
 

