A barangay in Hermosa, Bataan has flooded so often, and so severely, that the local government is now moving to redirect the river itself.

The municipality of Hermosa, a first-class town of roughly 60,000 to 70,000 people on the western coast of Luzon, is seeking a contractor to physically rechannel the Hermosa River where it runs through Barangay Mabiga, one of the inland communities most exposed to riverine flooding along that corridor. The specific project budget and timeline have not been publicly confirmed in bid documents, but the work involves supplying materials, labor, and heavy equipment to redirect the river's course.

The deeper problem traces back more than 30 years. When Mount Pinatubo erupted in 1991, one of the largest volcanic events of the 20th century, it buried river systems across Central Luzon under massive deposits of volcanic debris known as lahar. Bataan was not hit as hard as neighboring Pampanga or Tarlac, but the secondary effects have been relentless: rivers slowly choked with sediment, riverbeds rising over time, and flood-carrying capacity shrinking year by year. Communities like Barangay Mabiga, built along the river corridor, now sit in a landscape where even moderate rainfall can overwhelm what's left of the natural channel.

Recent typhoon seasons have sharpened the urgency. Super Typhoon Karding struck Bataan in September 2022, flooding homes and forcing evacuations across multiple barangays, including in Hermosa. The storms keep coming, but the river's capacity to handle them has only continued to deteriorate.

Rechanneling is a more aggressive intervention than the dredging or dike work that has been attempted elsewhere in the region, and it signals that smaller fixes have not been enough. The Philippine national government under President Marcos Jr. has made flood control a stated infrastructure priority, routing funds through the Department of Public Works and Highways and local government units. Whether this project draws on municipal funds, a national appropriation, or both has not been confirmed in publicly available documents.

Once a contractor is selected and work begins, Barangay Mabiga residents will be watching closely. For a community that has lived with flooding season after season, the question isn't whether the river needs to move. It's whether this time the fix will hold.