Lake Mainit Key Biodiversity Area

Lake Mainit Facts and Figures Watershed Area

87,072 hectares

Aggregate Land Area

72,372 hectares

Lake Surface

17,060 hectares (BFAR)

Shoreline

62.10 kilometers

Maximum Depth

223 meters

Mean Depth

128 meters

Volume

180.00 cu. Km.

No. of Tributaries

28 major rivers

Lake Outlet

Kalinawan River (23 km length)

Length of (North to South)

29.10 Kilometers

Protect & Save

Lake Mainit

Key Biodiversity Area The habitat of rare flora and fauna

Rafflesia Mixta

Surface Temperature Ranges 27.00ºC - 30.66ºC Dissolved Oxygen Ranges

5.90 to 8.01 mg OL –1

PH Ranges

7.2 (49m) to 7.9 (0 m)

Lake Classification

Oligotrophic Lake (PCAMRD)

Water Classification

Class A (EMB)

Fishes

41 species (MSU-Naawan/SFMP -CFR, 2010)

Unidentified Fishes

4 species (MSU-Naawan/SFMPCFR, 2010)

Aquatic Plants

15 species (MSU-Naawan/SFMP -CFR, 2010)

Surface Elevation

30 m ASL

Total Population

142, 344 (Census 2007, NSO)

Source: Lake Mainit Development Alliance Environment Management Plan Bibe (Univalve Freshwater Shell) Corbicula sp.

Ige (Bivalve Freshwater Shell) Viviparia angularis

Hornbill

Silvery Kingfisher Little Egret

White-throated King fisher

Philippine Wild Duck DENR Regional Office XIII

Brgy. Ambago, Butuan City, 8600 Website: http://caraga.denr.gov.ph/

E-mail: denrcaraga@yahoo.com or pmd.misss@gmail.com

Regional Public Affairs Office

Kagang (Freshwater crab)

Kumong (Freshwater crab)

Tel. No.: 341-32-29 Lake Mainit Key Biodiversity Area ♥ July 2015

DENR-CARAGA

Fish species in Lake Mainit

THE LAKE MAINIT KEY BIODIVERSITY AREA (LMKBA)

L

AKE MAINIT is the fourth largest lake in the Philippines and one of the cleanest lakes in the country. It is located at 9°28′N 125°31′E in northeastern Mindanao, Caraga region. The lake is shared by the provinces of Agusan del Norte and Surigao del Norte. The lake and its surrounding area called as the Lake Mainit Key Biodiversity Area (LMKBA), considered to have high ecological value for being the habitat of some rare and threated wildlife.

Lake Mainit Caraga Region Northeast Mindanao Philippines

Undeniably very scenic, the lake remained generally clear and clean. The lake area is defined as tourism subzone, mainly for adventure tourism and ecotourism based on the Caraga Tourism Master Plan.

FISHES IN LAKE MAINIT The main freshwater fish found in the lake are Freshwater Goby locally known as “Pijanga” (Glossogobius giuris) and Bugwan” (Hypseleotris agilis); Pantat/Agok-ok (Catfish/ Clarias sp); Kasili (Freshwater eel/ Anguilla sp); Tilapia (Oreochromis nilotica); and Karpa (Carp/ Cyprinus carpio) among others.

Common finfish species of commercial value in Lake Mainit: A.) Glossogobius guiris B.) Hypseleotris agilis C.) Oreochromis nilotica D.) Cyprinus carpio E.) Channa striata F. Valamugil cunnessius G.) Anguilla sp.

H.) Neostethus thessa.

Floating aquatic plants in Lake Mainit

OTHER FAUNA IN LAKE MAINIT AREA Asian migratory birds such as Tufted Duck, Egret, Heron, and Bittern and local bird species are also found in LMKBA where they used it as the source of food and as breeding ground. Wildlife such as deer, wild pigs, snakes are found in the forest around the LMKBA.

COMMUNITIES IN LAKE MAINIT AREA

A man in Kitcharao, Agusan del Norte selling fish caught from Lake Mainit. Photo from Aquatic Cebu Enthusiasts (ACE), 2012.

The lake is almost equally divided by four lakeshore municipalities of Jabonga and Kitcharao in Agusan del Norte and the municipalities of Alegria and Mainit in Agusan del Norte. There are 31 barangays that are largely dependent on the lake for food and livelihood.

Aquatic plants of Lake Mainit and Kalinawan river: G) Lotus Lily or paguse H) Red Lotus I) Water Hyacinth J) Water Lettuce K) Pond Fern L. Water Spinach or kangkong M. Neptunia or small-leaf sensitive plant N. Unidentified

Source: Sustainable Fishery Management Program Comprehensive

Final Report (SFMP-CFR), 2010.