A MATHEMATICAL MODEL FOR WATER INFLOW FORECASTING AT GERD BEFORE AND AFTER THE CONSTRUCTION OF KARADOBI DAM

Adil Mohamed Elkhidir, Ahmed Hassan Aboalbasher, Ahmed Adil Eltayeb, Osama Gasimelseed Bakhit

Abstract


The construction of Ethiopian Dams (GERD and Karadobi) will definitely cause many impacts on Sudanese dams on the Blue Nile during initial filling and full operation of the two Ethiopian dams respectively. The flow of the Blue Nile entering Sudan will be regulated so that the flood hazard will not be there, as the Blue Nile flow will be in the range (100-200Mm3/day) compared to the high flood discharges (800-1000 Mm3/day) during the last period of August. A mathematical model has been developed using GIS software tools (HEC-GeoHMS and HEC-HMS 4.0) and Rainfall characteristics data for 12 sub-catchments for Blue Nile system within Ethiopia. This model has been used to forecast water inflows coming at GERD before and after the construction of Karadobi dam, respectively. Therefore, releases data, downstream GERD that entering Sudan will be known. This data will be necessary for Sudanese dam’s operation.

Keywords


GERD; Karadobi; GIS

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References


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