| Ci Ujung Ujung river, Ciujung river | |
|---|---|
 The Ciberang and Ciujung rivers coming together atRangkasbitung, 1910-1934 | |
  Location in Java | |
| Location | |
| Country | Indonesia |
| Physical characteristics | |
| Source | Mount Halimun Salak National Park |
| • location | Bogor Regency |
| 2nd source | |
| • location | Lebak Regency |
| Mouth | |
• location | Tengkurak, Tirtayasa, Serang, Banten |
• coordinates | 5°57′47″S106°21′25″E / 5.962932°S 106.356911°E /-5.962932; 106.356911 |
| Basin size | 2,159 km2 (834 sq mi) |
| Basin features | |
| River system | Ciujung basin |
TheCiujung (Ujung River, as the prefix "ci" means "river") is a river in the province ofWest Java andBanten on the island ofJava, Indonesia. Primarily inLebak Regency, the river basin covers an area of 2,022.14 km2.
The rivers in Banten, the westernmost province of Java, run roughly parallel to each other. The main ones are the Peteh, called theBanten on the lower reaches near the city of Kota Banten (with a basin area of 257.15 km2), the Ujung (basin area of 2,022.14 km2), which enters the sea atPontang, theDurian (basin area of 732.62 km2), which enters the sea atTanara, theManceuri, and theSadane (basin area of 1,400.32 km2), which rises in the mountainous region of Priyangan and in 1682 formed the border between theDutch East India Company (VOC) territory andBatavia (modernJakarta).[1] The rivers fan out into deltas near the coast.[1] The Ciujung discharges into the 120 square kilometres (46 sq mi) of Banten Bay.[2]
The original inhabitants of the mouths of Ci Ujung, Ci Durian, and Ci Banten rivers wereSundanese people.[3] In 1682 there were paddy fields on the lower reaches of the Ujung and Durian.[4] Pontang Port and the Ciujung River used to be important for carrying merchandise into the interior.[5] The river itself sits on an elevation of 10 meters.