“Lake Buluan is a lake located in the island of Mindanao, Philippines. With an estimated surface area of 61.34 square kilometers, it is the third largest lake in Mindanao, after Lake Lanao and Lake Mainit. It has an average elevation of 4.5 meters.
The lake is sandwiched between the provinces of Maguindanao and Sultan Kudarat. The lake falls under the political jurisdiction of the municipalities of Buluan of Maguindanao and President Quirino and Lutayan in Sultan Kudarat. The lake actually consists of adjoining marshy basins of the Pulangi, Maanoy, Buluan, Alah rivers, which are all tributaries of the Mindanao River.” (Lake Buluan. https://en.wikipedia.org/wiki/Lake_Buluan. Retrieved 8 June 2013)
Lake Buluan is threatened by mining in Tampakan, South Cotabato.