| Kalu Ganga | |
|---|---|
River Kalu in Ratnapura |
|
| Origin | Adam's Peak |
| Mouth | Kalutara |
| Basin countries | Sri Lanka |
| Length | 129 km (80 mi) |
| Source elevation | 2,400 m (7,874 ft) |
| Mouth elevation | Sea level |
| Basin area | 2,766 km2 (1,068 sq mi) |
| Left tributaries | Kukule River |
Kalu River (Sinhala: කළු ගඟ; literally: The Black River) is a river in Sri Lanka. Measuring 129 km (80 mi) in length, the river originates from Adam's Peak and reach the sea at Kalutara. The Black River flows through the Ratnapura and the Kalutara District and pass the city Ratnapura. The mountainous forests in the Central Province and the Sinharaja Forest Reserve are the main sources of water for the river.[1]