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The following table lists most rivers of Sri Lanka. Since Sri Lanka is a trilingual country, some rivers may have a Sinhala name (i.e. Kalu Ganga), while other have an English name (i.e. Kelani River). There are two words meaning "river" in the Sinhala language, namely Ganga (ගඟ) and Oya (ඔය), of which the usage of both terms is arbitrary.
The production of hydroelectricity from six dams in the Mahaweli system supplies more than 40% of Sri Lanka's electricity needs. One of the many sources of the river is the Kotmale Oya. [6] There is a misconception in Sri Lanka that the Mahaweli starts at Sri Pada Mountain.
The Menik Ganga is the thirteenth-longest river of Sri Lanka. The river is approximately 114 km (71 mi) long and flows across two provinces and two districts. Its catchment area receives approximately 2,124 million cubic metres of rain per year, and approximately 10 percent of the water reaches the sea. It has a catchment area of 1,272 square ...
More than 90% of Sri Lanka's surface lies on Precambrian strata, some of it dating back 2 billion years. [6] The granulite facies rocks of the Highland Series (gneisses, sillimanite-graphite gneisses, quartzite, marbles, and some charnockites) make up most of the island and the amphibolite facies gneisses, granites, and granitic gneisses of the Vijayan Series occur in the eastern and ...
Sri Lanka is pockmarked with many irrigation dams, with its water resource distributed across nearly the entirety of the island for agricultural purposes via artificial canals and streams. Utilization of hydro resources for agricultural production dates back to the pre-Colonial era , with the current crop production now largely dependent on ...
The irrigation works in ancient Sri Lanka were some of the most complex irrigation systems of the ancient world. The earliest examples of irrigation works in Sri Lanka date from about 430 BCE, during the reign of King Pandukabhaya , and were under continuous development for the next thousand years.
The Gin Ganga (Sinhala: ගිං ගඟ, Gin River), is a 115.9 km (72 mi) long river located in Galle District of Sri Lanka. [1] The river's headwaters are located in the Gongala Mountain range, near Deniyaya, bordering the Sinharaja Forest Reserve. [2] The river flows past the villages of Baddegama, Nagoda, Thelikada and Hegoda.
The Madu Ganga is a minor watercourse which originates near Uragasmanhandiya in the Galle District of Sri Lanka, before widening into the Madu Ganga Lake at Balapitiya. The river then flows for a further a 4.4 km (2.7 mi) before draining into the Indian Ocean. It is located 88 km (55 mi) south of Colombo and 35 km (22 mi) north of Galle.