Mathematical model investigation of the suitable countermeasure for the accretion problem at Rosetta estuary, Egypt

The Rosetta waterway is one of the two main branches of the Nile river in Egypt. It is considered the life artery for fishermen who live at the Rosetta district in Egypt. The closure of the Rosetta estuary caused by sedimentation will not only affect their livelihood but also endangers the people live upstream of the mouth due to releasing a probable emergency flood. The present paper focuses on the accretion problem as a second phase of a comprehensive study performed by Delft3D numerical model for the Rosetta promontory. The first phase focused on combating the shoreline erosion problem at the southwestward of the Rosetta (A. S. M. Ahmed, 2004). The causes of the sedimentation problem were understood and the consequences in case of no countermeasure are explained. Based on the knowledge obtained by investigating the motivation of Rosetta sedimentation, three alternatives were simulated. The proper solution was recommended as it produces low environmental impacts.