Lake Bato
13°20'N, 123°22'E; at Bato Town, approximately 9 km southwest of Iriga City, Camarines Sur Province, southeastern Luzon.
2,810 ha.
Biogeographical Province:
Wetland type:
14 & 21.
Description of site:
A freshwater lake with extensive marshes and some swamp forest, fed by local run-off and several small streams. The lake drains into a tributary of the Bicol River which enters the sea near Naga City. The average depth is 8m, and the bottom is muddy clay. The pH value is 6.1, the average dissolved oxygen 10 p.p.m., and the total hardness (SBY) 2.4.
Climatic conditions:
Humid tropical climate with the rainfall more or less evenly distributed throughout the year (Type IV).
Principal vegetation:
Approximately 20 species of larger aquatic plants have been recorded, including Ipomoea reptans, Hydrilla verticillata and Eichhornia crassipes.
Land tenure:
No information.
Conservation measures taken:
Conservation measures proposed:
Land use:
Fishing, especially for carp Cyprinus carpio and the tilapias Tilapia nilotica, T. mossambica. Minor fisheries include freshwater shrimps Macrobrachium sp, catfish Clarias sp and climbing perch Anabas testudineus.
Possible changes in land use:
Disturbances and threats: No information.
Economic and social values: The lake supports an important fishery.
Fauna: The lake has a rich fish fauna including the endemic species Mystichthys luzonensis.
Special floral values: None known.
Research and facilities: Studies of the fisheries have been carried out by the Bicol River Basin Development Program in San Jose, Pill.
References: Bureau of Fisheries and Aquatic Resources (1984-85); Rinconada Integrated Development Area Project Feasibility Study (1979).
Criteria for inclusion: 1b, 2d.
Haribon Foundation.