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University of Gezira (2017)

Hydrological Investigation for the Tamaniat - Hudeiba Reach, Main Nile River, Sudan (1958 – 2013)

Khalifa, Amgadabdelhalim Ahmed Abdelhalim

Titre : Hydrological Investigation for the Tamaniat - Hudeiba Reach, Main Nile River, Sudan (1958 – 2013)

Auteur : Khalifa, Amgadabdelhalim Ahmed Abdelhalim

Université de soutenance : University of Gezira

Grade : Master of Science (MS) in Water Management, 2017

Résumé
Good water resources management requires accurate flow measurement. The main Nile River waters is a shared resources ;Therfore, certainity in balancing those reources is essential. Accordingly, many gauging stations along the river were established to monitor the flows. Measuremesnt at such stations include water levels, sediment sampling that assist in estimating the discharge and expected sediment yield, respectively. The main objective of this study is to hydrologically analyse the flows at Tamaniat and Hudieba gauging stations, as representive of the main river Nile monitoring network within Sudan, and hence to carry-out annual water balance. The data used in the study covered the period 1958 to 2013 for Tamaniat station and 1974–2013 for Hudieba. Visualization of the set of data for Tamaniat showed that it is useful to split the data into two sub-sets : (1) 1958–1996 and (2) 1996–2013. For Hudeiba the data was spilt into three sub-sets : (1) 1974–1994, (2) 1995–1999 and (3) 2000–2013. Tamaniat data showed a good fit and the annaul water balance analysis revealed a percentance difference of 2% between the flows upstream (sum of Blue and White Nile flows) and downstream the station. On the other hand, Hudieba water balance with Tamniat shows and overestimate of about 3% on average with some exceptional years that show high difference. It is concluded that discharge measurements at Hudeiba is not accurate. And the study recommended to improve the quality of measurements and also to conduct more detailed studies.

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