description Mahaweli River Overview
The Mahaweli is Sri Lanka's longest river, rising in the central highlands and flowing generally northeast toward the sea near Trincomalee. Its basin is central to the Mahaweli Development Programme, which uses reservoirs and canals for hydroelectric generation, irrigation, agriculture, and settlement. The river therefore has both geographic importance and a major role in Sri Lanka's water infrastructure.
help Mahaweli River FAQ
Where does the Mahaweli River flow?
The Mahaweli rises in Sri Lanka's central highlands and flows generally northeast. It reaches the sea near Trincomalee on the island's northeastern coast.
Is the Mahaweli Sri Lanka's longest river?
Yes. The Mahaweli is recognized as Sri Lanka's longest river and is one of the country's most important water systems.
What is the Mahaweli Development Programme?
It is a large development system built around reservoirs, canals, irrigation, and hydroelectric generation in the Mahaweli basin. The programme changed water management and agricultural development across several parts of Sri Lanka.
Why are reservoirs important on the Mahaweli?
Reservoirs store water for irrigation and can also generate hydroelectric power. They help regulate seasonal flows in a basin where rainfall varies between the wet highlands and drier plains.
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