University of Khartoum

Environmental impacts of Merowe dam on Northern state - Sudan

Environmental impacts of Merowe dam on Northern state - Sudan

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Title: Environmental impacts of Merowe dam on Northern state - Sudan
Author: Mohamed, Nugud Siddig Ahamad
Abstract: The objective of this research is to assess the environmental as well as the social and economical impacts on Northern state that have risen from the construction of Merowe dam. The dam is close to 4th cataract where the river divides into multiple smaller branches with large island in between. The methodology was based on three resources; entailing the studies of published materials, field observations, as well as measurement and analysis. One district was selected for the questionnaire survey and interview (Algolid locality) in Northern state .The measurement for water quality in up and down stream were carried by HSE department, in the Merowe dam laboratories and it includes water Temperature, Total Hardness , pH ,Total dissolved solids , Turbidity , Total coli form and Faecal coli form bacteria . Also Total Rainfall and Relative humidity conducted by Sudan Meteorological Authority was used to understand the climatic situation in Northern state after impounding in the dam. The results of the study showed increase to relative humidity from (2009s to 2013s)from Karima city, and did not record a rise in the rainfall rate Also water analysis did not differ between up and down streams. The Total dissolved solid value in September and turbidity value in August were highest in the down stream, it equal 432 mg/l and 3943 NTU respectively. Further more suspended sediment concentration result is not high in the reservoir when compared with the expected quantity. The forecasting study shows sediment load received by Merowe reservoir will be 4.24 billion m3 and within less than 150 years, the total storage capacity of Merowe reservoir will be lost. From the investigation carried it was found that Crocodile of the Nile disappeared and did not record similar result with some kinds of fish .Add to that local people noticed water level in the wells has decreased . Merowe dam supports agricultural sector and lead to new job opportunities. After impounding in lake of the dam, destructive floods were not observed. Good practice for the dam’s power plant operation and closely monitoring of the river banks in Northern state will lead to sustainability of environment and the dam.
Description: 78page
URI: http://khartoumspace.uofk.edu/123456789/24522


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