Abstract:
Triggered by persistent heavy rainfall, the Al-Baha'at Dam in the Red Sea State, Republic of Sudan, failed on 24-25 August 2024, leaving at least 148 people dead and many others missing. Using Global Precipitation Measurement (GPM) satellite rainfall data, we characterized rainfall over the Al-Baha'at basin from 1 to 31 August. A hydrological model forced by opensource digital elevation and land-use data was employed to estimate reservoir inflow, and the breach outflow was subsequently calculated with the stage-capacity curve and the final breach width. A two-dimensional hydrodynamic model was then constructed to simulate the inundation triggered by the dam failure. The causes of the collapse are examined in terms of rainfall patterns, flood processes, and dam operations, and recommendations are offered on extreme-weather response, risk earlywarning, reservoir safety management, structural monitoring, and enhancing dam flood resilience.