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Valencia Flood Experts Call for Basin-Wide Mitigation After October Disaster

The October 29 flash flood devastated Chiva and Picanya, prompting calls for integrated solutions combining nature-based restoration and urban engineering.

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Mapa de drenaje en la cuenca del Poyo
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Overview

  • The October 29 flood, triggered by torrential rain, caused the rambla de Chiva to overflow, with water depths reaching up to 4.5 meters in some areas.
  • Chiva's narrow urban channels amplified the flood's destructive force, funneling water through constrained spaces and increasing pressure and depth.
  • The Institut Cartogràfic Valencià’s detailed flood maps reveal the inundation footprint and water heights across a 166 km² area, aiding ongoing risk assessments.
  • Experts attribute the disaster to a combination of torrential rainfall and the Poyo basin's rapid hydrologic response, exacerbated by historical land-use changes.
  • Proposed solutions include hydrological-forest restoration in the basin's headwaters and civil engineering works in densely urbanized zones to mitigate future risks.