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A platform for research: civil engineering, architecture and urbanism
Evaluation of Merowe Dam’s Effect on the Accumulated Sediment in Lake Nubia, Sudan Using RS/GIS
Abstract Constructing dams upstream Lake Nubia (Sudan) may dramatically alter the distribution of its accumulated sediment via reducing the annual flow deposition rate into this lake based on their design criteria. This chapter aims to estimate the annual inflow sediment rate into Lake Nubia before and after the operation of Merowe Dam. Therefore, the following equal length periods (2000–2003) before its operation and (2009–2012) after its operation are considered to evaluate the effect of the dam construction on the accumulated sediment in Lake Nubia. This will be achieved utilizing remote sensing (RS) and geographic information systems (GIS) techniques by utilizing the 3D profiles of Lake Nubia study area. The results of the present approach based on RS/GIS are compared to obtained results using the complimentary cross sections (the traditional method adopted by Aswan High Dam Authority, AHDA). The results indicate that the annual sedimentation rate was reduced by about 2.57 million cubic meter (2.04%). Also, results indicated that the present approach overestimated the annual sediment rate by about 3.50%, before and after the operation of Merowe Dam compared to the results of the method adopted by AHDA. This low reduction percent indicates that the effect of Merowe Dam on the reduction of the incoming annual sediment rate to Lake Nubia is minor and can be neglected compared to the effect of huge upstream dams such as Grand Ethiopian Renaissance Dam (GERD).
Evaluation of Merowe Dam’s Effect on the Accumulated Sediment in Lake Nubia, Sudan Using RS/GIS
Abstract Constructing dams upstream Lake Nubia (Sudan) may dramatically alter the distribution of its accumulated sediment via reducing the annual flow deposition rate into this lake based on their design criteria. This chapter aims to estimate the annual inflow sediment rate into Lake Nubia before and after the operation of Merowe Dam. Therefore, the following equal length periods (2000–2003) before its operation and (2009–2012) after its operation are considered to evaluate the effect of the dam construction on the accumulated sediment in Lake Nubia. This will be achieved utilizing remote sensing (RS) and geographic information systems (GIS) techniques by utilizing the 3D profiles of Lake Nubia study area. The results of the present approach based on RS/GIS are compared to obtained results using the complimentary cross sections (the traditional method adopted by Aswan High Dam Authority, AHDA). The results indicate that the annual sedimentation rate was reduced by about 2.57 million cubic meter (2.04%). Also, results indicated that the present approach overestimated the annual sediment rate by about 3.50%, before and after the operation of Merowe Dam compared to the results of the method adopted by AHDA. This low reduction percent indicates that the effect of Merowe Dam on the reduction of the incoming annual sediment rate to Lake Nubia is minor and can be neglected compared to the effect of huge upstream dams such as Grand Ethiopian Renaissance Dam (GERD).
Evaluation of Merowe Dam’s Effect on the Accumulated Sediment in Lake Nubia, Sudan Using RS/GIS
Elsahabi, Mohamed (author) / Negm, Abdelazim (author)
2018-01-01
15 pages
Article/Chapter (Book)
Electronic Resource
English
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