|Length||116 km (72 mi)|
|• maximum||250 106 Sq.m|
The Kumbukkan Oya is the twelfth-longest river of Sri Lanka. It is approximately 116 km (72 mi) long. It runs across two provinces and two districts.
Its catchment area receives approximately 2,115 million cubic metres of rain per year, and approximately 12 percent of the water reaches the sea. It has a catchment area of 1,218 square kilometres.
The Vanni, also spelled Wanni, is the name given to the mainland area of the Northern Province of Sri Lanka. It covers the entirety of Mannar, Mullaitivu and Vavuniya Districts, and most of Kilinochchi District, and has an area of approximately 7,650 square kilometres (2,950 sq mi). The population and infrastructure of the Vanni were devastated by the Sri Lankan Civil War.
Kanneliya–Dediyagala–Nakiyadeniya or KDN is a forest complex in southern Sri Lanka. The forest complex designated as a biosphere reserve in 2004 by UNESCO. The KDN complex is the last large remaining rainforest in Sri Lanka other than Sinharaja. This forest area has been identified as one of the floristically richest areas in South Asia. The forest complex is situated 35 km northwest of city of Galle. The rain forest is a major catchment area for two of the most important rivers in southern Sri Lanka, the Gin and Nilwala Rivers. This biosphere reserve harbors many plants and animal species endemic to Sri Lanka.
The Kelani River is a 145-kilometre-long (90 mi) river in Sri Lanka. Ranking as the fourth-longest river in the country, it stretches from the Sri Pada Mountain Range to Colombo. It flows through or borders the Sri Lankan districts of Nuwara Eliya, Ratnapura, Kegalle, Gampaha and Colombo. The Kelani River also flows through the capital of Sri Lanka, Colombo, and provides 80% of its drinking water.
The Samanala Dam is a dam primarily used for hydroelectric power generation in Sri Lanka. Commissioned in 1992, the Samanalawewa Project is the third-largest hydroelectric scheme in the country, producing 405 GWh of energy annually. It was built with financial support from Japan and the United Kingdom. It is notable for a large leak on its right bank. Power production continues as planned despite the leakage, and the water from the leak now provides two thirds of the water issued by the reservoir for agriculture in downstream areas.
Kalu Ganga is a river in Sri Lanka. Measuring 129 km (80 mi) in length, the river originates from Sri Padhaya 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.
The Broadlands Dam is a 35 MW run-of-the-river hydroelectric complex currently under construction in Kitulgala, Sri Lanka. The project is expected to be completed in 2020, and will consist of two dams, and a power station further downstream.
The Randenigala Dam is a large hydroelectric embankment dam at Rantembe, in the Central Province of Sri Lanka. Construction of the dam began in November 1982, and was completed in approximately 4 years. The dam and power station was ceremonially opened by then President J. R. Jayawardene in 1986.
The Rantembe Dam is a 52-megawatt hydroelectric gravity dam at Rantembe, in the Central Province of Sri Lanka. Construction of the dam began in January 1987, and was completed in April 1990 as scheduled. The dam was constructed by the German 'Joint Venture Randenigala'; a different German joint venture has built the Randenigala Dam, further upstream.
The Kalu Ganga Dam is a large gravity dam, and the second vital component of the larger and more complex Moragahakanda — Kalu Ganga Project, currently under construction across the Kalu Ganga at Pallegama, in the Matale District of Sri Lanka. Construction of the project was launched by President Mahinda Rajapaksa on 25 January 2007. The maiden waters of the dam was released in July 2018.
The Kukule Ganga Dam is a 110 m (360 ft) gravity dam built across the Kukule River in Kalawana, Sri Lanka. The run-of-river-type dam feeds an underground hydroelectric power station located approximately 5 kilometres (3.1 mi) away, via tunnel.
The Rajanganaya Dam is an irrigation dam built across the Kala Oya river, at Rajanganaya, bordering the North Western and North Central provinces of Sri Lanka. The main concrete dam measures approximately 350 m (1,150 ft) and creates the Rajanganaya Reservoir, which has a catchment area of 76,863.60 hectares and a total storage capacity of 100.37 million cubic metres.
The Maha Oya is a major stream in the Sabaragamuwa Province of Sri Lanka. It measures approximately 134 km (83 mi) in length. It runs across four provinces and five districts. Maha Oya has 14 Water supply networks to serve the need of water and more than 1 million people live by the river.
The Maduru Oya is a major stream in the North Central Province of Sri Lanka. It is approximately 135 km (84 mi) in length. Its catchment area receives approximately 3,060 million cubic metres of rain per year, and approximately 26 percent of the water reaches the sea. It has a catchment area of 1,541 square kilometres.
The Kala Oya is the third longest river in Sri Lanka. It is approximately 145 km (90 mi) in length. The river has a basin size of 2,873 km2 (1,109 sq mi), and more than 400,000 rural population live by the river basin.
Rekawa Lagoon is a coastal waterbody located in Hambantota Districtt in the Southern Province, Sri Lanka and it is located 200 km (120 mi) south of Colombo. The lagoon possesses a rich biodiversity with a variety of flora and fauna.
Mahoma Hydroelectric Power Station is a 3.0 megawatts (4,000 hp) mini-hydroelectric power plant in Uganda.
The Yan Oya is the fifth-longest river of Sri Lanka. It measures approximately 142 km (88 mi) in length. Its catchment area receives approximately 2,371 million cubic metres of rain per year, and approximately 17 percent of the water reaches the sea. It has a catchment area of 1,520 square kilometres.
The Deduru Oya is the sixth-longest river of Sri Lanka. It measures approximately 142 km (88 mi) in length. It runs across four provinces and five districts.
The Menik Ganga is the thirteenth-longest river of Sri Lanka. It measures approximately 114 km (71 mi) in length. It runs across two provinces and two districts.
The Mi Oya is a 108 km (67 mi) long river, in North Western of Sri Lanka. It is the fifteenth-longest river in Sri Lanka. It begins in Saliyagama and flows northwest, emptying into the Indian Ocean thru Puttalam.