Staff Members - Benha University
Impact of dredging on the Nile River downstream Isna Barrage
PROCEEDINGS OF THE 10TH CONFERENCE ON FLUVIAL HYDRAULICS, DELFT, THE NETHERLANDS, 7–10 JULY 2020 • 2020
Publication Information
Authors
A.M. Gaweesh;M.N. El-Bahlol;M.A. Abdul-Muttalib
Keywords
anthropogenic, sediment transport, fluvial discharge, morphology, dredging, degradation Delft3d, HAD, second reach of the Nile River in Egypt
Journal
PROCEEDINGS OF THE 10TH CONFERENCE ON FLUVIAL HYDRAULICS, DELFT, THE NETHERLANDS, 7–10 JULY 2020
Publisher
CRC Press/Balkema
Volume
Not Available
Issue
Not Available
Pages
2300;2305
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
The construction of the High Aswan Dam (HAD) caused a dramatic reduction in fluvial discharge leading to an obvious footprint on the morphodynamics of the Nile
River in Egypt (NRE). A typical erosional phase of undercutting and bed incising took place
initially post-construction. Dredge work is carried out yearly at certain hot spots along the
NRE course to allow for navigation. The present study focuses on the impact of dedicated
dredging in alluvial rivers as a form of human interference. Numerical modeling was used to
quantify volumes of erosion and deposition both with and without dredging within a 60 km
reach downstream Isna Barrage (RK 167). Morphologic changes between 2004 and 2018 indicate net erosion where most of the material lost from bed is through dredging. The results
suggest that dredging is altering the dynamic equilibrium of the current HAD flow release
scheme.
River in Egypt (NRE). A typical erosional phase of undercutting and bed incising took place
initially post-construction. Dredge work is carried out yearly at certain hot spots along the
NRE course to allow for navigation. The present study focuses on the impact of dedicated
dredging in alluvial rivers as a form of human interference. Numerical modeling was used to
quantify volumes of erosion and deposition both with and without dredging within a 60 km
reach downstream Isna Barrage (RK 167). Morphologic changes between 2004 and 2018 indicate net erosion where most of the material lost from bed is through dredging. The results
suggest that dredging is altering the dynamic equilibrium of the current HAD flow release
scheme.