Lake Dapao is a deep water

Deep Water

Deep Water is a suspense novel by Patricia Highsmith, first published in 1957 by Harper & Row.-Synopsis:In the small town of Little Wesley, intellectual publisher Victor Van Allen decides to discourage his wife Melinda’s many lovers by hinting to them that he may have killed her previous beau,...

 lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 located in the province of Lanao del Sur

Lanao del Sur

Lanao del Sur is a province of the Philippines located in the Autonomous Region in Muslim Mindanao . Its capital is Marawi City and borders Lanao del Norte to the north, Bukidnon to the east, and Maguindanao and Cotabato to the south. To the southwest lies Illana Bay, an arm of the Moro Gulf...

, southwest of Lake Lanao

Lake Lanao

Lake Lanao is a large lake in the Philippines, located in Lanao del Sur province in the country's southern island of Mindanao. With a surface area of 340 km²...

, in the southern island of Mindanao

Mindanao

Mindanao is the second largest and easternmost island in the Philippines. It is also the name of one of the three island groups in the country, which consists of the island of Mindanao and smaller surrounding islands. The other two are Luzon and the Visayas. The island of Mindanao is called The...

, Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. It is one of the deepest lakes in the country reaching a maximum depth 120 meters and has an estimated surface area of 1, 011 hectares (10.11 km²). The lake receives water from local run-off

Surface runoff

Surface runoff is the water flow that occurs when soil is infiltrated to full capacity and excess water from rain, meltwater, or other sources flows over the land. This is a major component of the water cycle. Runoff that occurs on surfaces before reaching a channel is also called a nonpoint source...

 and several small rivers.

In 1965, the lake and its vicinity was declared as a protected national park

National park

A national park is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Although individual nations designate their own national parks differently A national park is a reserve of natural, semi-natural, or developed land that a sovereign state declares or...

 under Republic Act 4190 that covers an area of about 1,500 km².

Plants growing in the lake includes hydrilla (Hydrilla spp

Hydrilla

Hydrilla is an aquatic plant genus, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. Synonyms include H. asiatica, H. japonica, H. lithuanica, and H. ovalifolica...

) and the filamentous alga (Clodophora spp). The lake is also reach in fish that includes dalág (Ophicephalus striatus), Mozambique tilapia (Oreochromis mossambicus

Oreochromis mossambicus

The Mozambique tilapia, Oreochromis mossambicus, is a tilapiine cichlid fish native to southern Africa. It is a popular fish for aquaculture...

), common carp (Cyprinus carpio), goby (Glossogobius giurus) and catfish (Clarias spp

Clarias

Clarias is a genus of catfishes of the family Clariidae, the airbreathing catfishes. The name is derived from the Greek chlaros, which means lively, in reference to the ability of the fish to live for a long time out of water....

).