The Kelani River is one of the major rivers in Sri Lanka, flowing approximately 145 kilometers. It originates from the Horton Plains in the central highlands and travels through several districts, including Kandy and Colombo, before emptying into the Indian Ocean. The river is vital for irrigation, hydropower generation, and drinking water supply. The Kelani River basin is rich in biodiversity and supports various ecosystems. It is also significant for local agriculture, providing water for rice and vegetable cultivation. Additionally, the river is a popular destination for recreational activities such as white-water rafting and fishing.