The Bureau of Fisheries and Aquatic Resources-4A (BFAR-4A) conducted a Water Quality Analyses and Laboratory tests on the fish samples from Mahipon Lumot Lake last July 8, 2020.

The Caliraya-Lumot Watershed Area Team (CLWAT) of the National Power Corporation requested for technical assistance regarding the possible cause and effect of the observed discoloration as well as the carrying capacity of Lumot Lake for aquaculture activities.

The activities undertaken were:

  1. On-site physical and chemical water quality testing;
  2. Water samples for bacteriological analysis, parasitological analysis, and necropsy; and
  3. Interview of some cage operators about common husbandry practices of rearing caged tilapia in Lumot Lake.

Lumot River Dam is an embarkment dam located between the towns of Cavinti and Lumban, in the province of Laguna, Philippines. The dam was constructed across Lumot River creating a reservoir now known as Lumot Lake or Sierra Lake. Lumot Lake provides additional water through a Bell-mouth spillway and tunnel to Caliraya Lake, which in turn serves as the upper reservoir for the Kalayaan Pumped-Storage Hydroelectrical Plant.

The BFAR 4A Technical Working Group (TWG) was composed of:

  • Virginia Panisales – Fisheries Production and Support Services Division (FPSSD);
  • Emiliana Casbadillo, Elvira Casao, Albert Sacabon, and Mateo Palapala Jr. – Provincial Fisheries Office (PFO) Laguna;
  • Nenita Kawit, Mary Jane Balani, John Alfred Palcon and San Juan Guerrero – Batangas Inland Fisheries and Technology Outreach Station (BIFTOS); and
  • Dr. Marco Espiritu, Joemari Piñero and Joy Azarias – Regional Fisheries Laboratory (RFL)

The National Power Corporation was represented by Mr. Vincent B. Concio, Section Chief of the Caliraya Lumot Watershed Area Team (CLWAT) while Mr. Rainier Arroyo together with some members represented Samahan ng may Palaisdaan sa Lawa ng Lumot Lake.

It is envisioned that this collaborative activity will determine the carrying capacity of the lake to regulate/control numbers of cages and adopt measures not only for production purposes but also on sustainable utilization and conservation of lake water.