Offline-First Flood Alert Mesh for Barangay Responders

Andrea Villanueva

Abstract

We designed and field-tested a LoRa-based mesh network that relays flood-level readings between barangay halls without cellular coverage. Across a six-week pilot in three riverside barangays, alert delivery reached 97.4% with a median latency of 11 seconds, outperforming SMS broadcast during two typhoon events.