The Kala Oya is the third longest
river
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...
in
Sri Lanka. It is approximately in length. The river has a basin size of , and more than 400,000 rural population live by the river basin.
Its
catchment area
In human geography, a catchment area is the area from which a location, such as a city, service or institution, attracts a population that uses its services and economic opportunities. Catchment areas may be defined based on from where people are ...
receives approximately 3,169 million cubic metres of
rain
Rain is water droplets that have condensed from atmospheric water vapor and then fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water ...
per year, and approximately 5 percent of the water reaches the sea. It has a catchment area of 1,792 square kilometers.
Tributaries
* Dambulu Oya
* Mirisgoni Oya
* Hawanella oya
* Moragolla Oya
* Maninda Oya
See also
*
List of dams and reservoirs in Sri Lanka
The following page lists most dams in Sri Lanka. Most of these dams are governed by the Mahaweli Authority, while the Ceylon Electricity Board operates dams used for hydroelectric power generation. Hydroelectric dams, including small hydros acco ...
*
List of rivers of Sri Lanka
References
{{SriLanka-river-stub
Rivers of Sri Lanka