Flood hazard mapping using FLO-2D and local management strategies of Dire Dawa city, Ethiopia

The final result of flood hazard map identified about 1163 buildings located inside high, medium and low flood hazard zones. The validity of the FLO-2D model versus ground truth was statistically tasted and showed a strong positive correlation. Flood smell, cloud direction, extreme weather and gunshot were identified as the locally used flood early warning strategies. Even if, the local flood risk management strategies have helped to reduce the level of vulnerability at normal condition, the gap is observed when extreme events are recorded. It is highly recommended that the flood hazard map developed for the city and existing flood management strategies are properly utilized for future flood risk planning of Dire Dawa city and its watershed.