Manila, Nov. 30 -- The Magat Dam in Northern Luzon is likely to continue spilling operations this week which may cause flooding in its downstream communities, the weather bureau said Monday.

Max Peralta, a hydrologist of the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), said rains from the surging northeast monsoon or amihan can increase inflow or flow of water into the dam, prompting it to spill excess water to prevent structural damage.

"That dam may not yet close its gate this week to stop releasing water," he said in an interview.

The release of water from Magat Dam contributed to flooding that affected areas in the Cagayan Valley Region earlier this month.

PAGASA weather forecaster Chris Per...