Lake Buhi is a lake found in Buhi, Camarines Sur in the Philippines. It has an area of 18 square kilometres and has an average depth of 8 metres (26 ft). The lake lies in the valley formed by two ancient volcanoes, Mount Iriga and Mount Malinao. It was created in 1641, when an earthquake caused a side of Mount Asog to collapse. The resulting landslide created a natural dam that blocked the flow of nearby streams. Another theory suggests that it was created by the eruption of Mt. Asog, which is now dormant.