Description: Sobek could be a powerful package developed and modified by WL| Delft Hydraulics, a company in the Netherlands, for flood forecasting, drainage systems, irrigation systems, sewer overflow, groundwater level control, river morphology, salt intrusion and water quality. It has been applied to the irrigation drainage systems in Egypt because of its several distinct advantages. The model can accommodate the irregular shape of the canal cross-sections and simulate the flow of long canal systems with many lateral offtakes and in-line heading up structures, such as weirs and culverts.