Kalu Ganga Dam, Gravity dam in Pallegama, Matale District, Sri Lanka

The Kalu Ganga Dam is a gravity dam in Matale District, Sri Lanka, built across the Kalu Ganga river to form a large reservoir. The concrete structure holds back a considerable volume of water used for irrigation and power generation in the surrounding area.

Construction of the Kalu Ganga Dam was launched by President Mahinda Rajapaksa on 25 January 2007, as the second component of the Moragahakanda–Kalu Ganga Project. The dam's maiden waters were released in July 2018. To make way for the reservoir, the old villages of Pallegama and Rambukoluwa were abandoned and residents moved to a new colony 5 to 10 km northeast.

The dam sits in a region where rice farming and irrigation have shaped daily life for generations. Water from the reservoir flows through canals to surrounding fields, something that becomes especially visible during the dry season.

The dam is in a rural area, so having your own transport is the most practical way to get there. The best views of the structure are from the surrounding hillsides, and early morning offers cooler temperatures for walking around.

The Kalu Ganga segment was estimated at US$167 million, with 22% (US$37 million) from the Kuwait Fund and 27.5% (US$46 million) from the Saudi Fund for Development; Sri Lanka's government covered the rest. Repayment runs over 20 years after a 5-year grace period, and OPEC funding carried 3.2% interest plus a 1% service charge.