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Bulacan dams open spillways as monsoon rains force mass evacuation

Two dams in Bulacan province have resumed water releases as heavy rainfall from the enhanced southwest monsoon pushes water levels toward critical thresholds. The measure has prompted the evacuation of approximately 200 families from low-lying areas in Marilao.

LSN Philippines · 29 August 2026

The Bulacan Provincial Disaster Risk Reduction and Management Office confirmed Friday that both facilities began discharging water to manage rising reservoir levels amid intensified monsoon conditions. Bustos Dam was releasing 294 cubic meters per second as water levels climbed closer to spillway capacity.

Local authorities in Marilao, a municipality downstream from the dams, initiated precautionary evacuation procedures affecting around 200 families in vulnerable communities. The move reflects growing concerns over potential flooding as the enhanced southwest monsoon continues to drench the region with significant rainfall.

The dam operations underscore the strain placed on Bulacan's water management infrastructure during monsoon season. Officials have urged residents in flood-prone areas to remain vigilant and follow evacuation orders as water discharge from the dams continues.

The provincial disaster management office is monitoring weather conditions and reservoir levels closely. Residents are advised to avoid crossing swollen rivers and waterways and to stay updated through official government channels for the latest guidance on the evolving situation.