MANILA, Philippines ? (UPDATE) Alarmed by reports about the floods caused by the overflow of Laguna Lake following the onslaught of tropical storm ?Ondoy,? a member of the House of Representatives sought an inquiry into the incident.

Muntinlupa Representative Rufino Biazon filed House Resolution 1444 ?to look into the current state of Laguna Lake to determine the reason and extent of water level rise that caused massive flooding? two weeks ago.

Biazon?s resolution also seeks to come up with possible measures necessary to address pollution, clogging of waterways, and flooding in the communities along the shore of the lake.

In a separate statement, Anakpawis partylist Representative Rafael Mariano called on the chamber to immediately tackle House Resolution 102, filed by the late congressman Crispin Beltran, to investigate the Laguna Lake Development Authority?s Laguna de Bay Fishpen Development Project.

Mariano said that in 1999, the LLDA issued Memorandum Circular No. 1 or the Policy Guidelines for Fishpen Registration in Laguna Lake whereby a maximum of 50 hectares would be granted to corporations engaged in the fishpen industry.

?Corporate fishpens have largely contributed to the obstruction of the natural flow of water to the floodways,? Mariano said.

Fishpens cover at least 10,000 hectares of the 900 square-kilometer Laguna Lake surface area. Majority of these fishpens are operated by corporations, according to Mariano.

?Instead of blaming the situation on residents and small fisherfolks living in the coastal areas of Laguna de Bay, the LLDA should look deeper into their policies and the vast hectares of fishpens it granted to corporations,? he said.

The downpour from Ondoy on September 26 caused the water level from Laguna Lake to rise and eventually overflow, submerging the homes of about 2.2 million residents who live in the nearby districts, including Biazon?s congressional district, according to the congressman.

Water level in the lake rose to at least 10 feet, according to a report from the Laguna Lake Development Authority (LLDA).

Laguna de Bay or Laguna Lake, situated between the provinces of Laguna to the south and Rizal to the north, is the largest lake in the Philippines.

?We have the administrator of the Laguna Lake Development Authority (LLDA), blaming the situation on poor garbage management, heavy silting, deforestation in surrounding watersheds, and the construction of housing settlements that obstruct the natural flow of water, including shanties along the floodways. Then there?s the Secretary of the Department of Environment and Natural Resources (DENR) blaming illegally constructed fish pens that obstruct the free and natural flow of water to the floodways,? Biazon said.

?Instead of just talking about, I?d rather that we formulate concrete measures to address the problem,? he added.