Alteration of the Fogera Plain flood regime due to Ribb Dam construction, Upper Blue Nile Basin, Ethiopia

The Fogera Plain, Ethiopia, is affected by recurrent flooding of the Ribb and Gumara Rivers. A large dam on River under construction for irrigation, but also to reduce flooding. We investigated effects flood regime floodplain wetlands using a combination of hydrodynamic rainfall-runoff models. model was calibrated based inundation maps retrieved from Landsat images. Pre- post-dam comparison 10 years shows that will extent 11%, as it only regulates 23.8% upstream watershed. duration necessary maintain ecologically significant water depths (≥ 0.5 m) show no notable changes. developed hydrologic hydrodynamic models can be used analyze other operation climate change scenarios even though there are uncertainties related terrain resolution analysis hydrological data.