Overview
- The Suminoe rainwater pump that serves the Naniwa Major Drainage Channel has been inoperable since the heavy rain on June 26, 2026, leaving the facility unable to run its full pumping function.
- The channel’s storage ability is being maintained but city officials warn that flood and inundation risk in southeastern Osaka is higher than normal while the pump is offline.
- Early inspections point to damage at the joint between the underground Naniwa channel and the pump room, and crews have carried out emergency repairs and safety measures at the site.
- Osaka City convened an expert panel and a multi‑agency review committee, which met for a second time on July 30 to coordinate investigations and to outline a staged restoration because full replacement of the large high‑head pump will take years.
- As interim steps, the city is expanding temporary pump capacity, lending sandbags to residents, boosting discharge operations, and publishing real‑time reservoir levels so communities can prepare for future heavy rain.