National and local authorities are studying plans to construct a floodgate along the Parañaque River to prevent seawater intrusion and mitigate severe flooding across several communities, local officials said Monday.

Parañaque City Mayor Edwin Olivarez said the proposed floodgate aims to block water flowing inland from Manila Bay during high tides, which chokes the city’s main river system during heavy downpours.

Monsoon rains enhanced by a regional weather system caused significant flooding in parts of the city over the weekend and into Monday.

“When there is high tide at Manila Bay, the water from the Parañaque River returns to the city,” Olivarez said in a radio interview. “The Parañaque River is where the water from Metro South passes. When there is high tide and heavy rains, the water cannot pass through to Manila Bay.”

The persistent water buildup triggered widespread frustration among residents, with many taking to social media to criticize city officials over long-standing drainage problems.

Severe flooding was reported along Dr. A. Santos Avenue and throughout Barangays San Dionisio, San Isidro and San Antonio.

In response to public outcry, the city government released a statement confirming that rescue and relief teams remain deployed in hard-hit areas and that multiple evacuation centers have been opened for displaced families.