Balinsasayao Twin Lakes Natural Park

Coordinates: 9°21′15″N 123°10′46″E / 9.35417°N 123.17944°E / 9.35417; 123.17944
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Balinsasayao Twin Lakes Natural Park
Map showing the location of Balinsasayao Twin Lakes Natural Park
Map showing the location of Balinsasayao Twin Lakes Natural Park
Location in the Philippines
LocationNegros Oriental, Philippines
Nearest cityDumaguete
Coordinates9°21′15″N 123°10′46″E / 9.35417°N 123.17944°E / 9.35417; 123.17944
Area8,016.05 hectares (19,808.1 acres)
EstablishedNovember 21, 2000
Governing bodyDepartment of Environment and Natural Resources
Balinsasayao Twin Lakes Natural Park

Balinsasayao Twin Lakes Natural Park is a natural park in the Philippines surrounding Lake Balinsasayao and Lake Danao in the province of Negros Oriental, 14.5 kilometres (9.0 mi) west of Dumaguete. It covers an area of 8,016.05 hectares (19,808.1 acres), with heights ranging from 830 to 846 metres (2,723 to 2,776 ft). The park is located in the Mount Talinis range, also known as Cuernos de Negros, in the southern portion of Negros Island, and spans across the municipalities of Valencia, Sibulan and San Jose. It was declared a protected area in 2000.[1][2]


Lakes Balinsasayao and Danao are two small crater lakes separated by a narrow mountain ridge in a hallow surrounded by Mount Guintabon to the west, Mount Balinsasayao to the east, Mount Kalbasaan to the north, and Mount Mahungot to the south.[3] They are located on the eastern slope of the Talinis mountain range which are volcanic in origin. Lake Balinsasayao has a surface area of 76 hectares (190 acres) and maximum depth of around 90 metres (300 ft). The smaller Lake Danao, on the other hand, has a surface area of 30 hectares (74 acres) and maximum depth of around 58 metres (190 ft).[4]

The twin lakes and their surrounding primary and secondary dipterocarp forests serve as the watershed for southern Negros Oriental. It contains the headwaters of five major river systems namely, the Amlan, Ayuquitan, Hinotongan, Okoy and Cauitan rivers that provides the water requirements and irrigation of the lowland communities.[4]

The park also contains a portion of the 133,000-hectare (330,000-acre) Negros Geothermal Reservation of the Philippine National Oil Company (now Energy Development Corporation) which supplies the energy needs for Dumaguete and southern Negros.[3]

Flora and fauna[edit]

Lake Balinsasayao
Kabalin-an Pond near the Twin Lakes

The Balinsasayao natural park is an important bird area which supports at least 114 avifauna species including the critically endangered Negros bleeding-heart and Visayan wrinkled hornbill, and other endangered birds such as the Negros striped babbler, flame-templed babbler, Japanese night heron and white-throated jungle flycatcher.[4] It also supports a significant population of Philippine duck, spotted imperial-pigeon, rufous-lored kingfisher, Visayan hornbill, white-winged cuckooshrike, celestial monarch, streaked reed-warbler, ashy-breasted flycatcher, Visayan flowerpecker and Philippine cockatoo.[3]

At least 27 mammalian species have also been documented in the area such as the endangered and endemic Philippine spotted deer, Visayan warty pig, Visayan leopard cat, Negros shrew and large fruit bats such as Philippine naked-backed fruit bat, Philippine tube-nosed fruit bat, giant golden-crowned flying fox and little golden-mantled flying fox.[3][4]


  1. ^ "Proclamation No. 414, s. 2000". Official Gazette of the Republic of the Philippines. Retrieved October 28, 2015.
  2. ^ "Balinsasayao Watershed Hydrology" (PDF). Silliman Journal. Retrieved October 28, 2015.
  3. ^ a b c d "PH066 Cuernos de Negros". Birdlife International. Retrieved October 28, 2015.
  4. ^ a b c d "Physical Geography". Official Website of Balinsasayao Twin Lakes Natural Park. Archived from the original on March 4, 2016. Retrieved October 28, 2015.