الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The Nile River (NR) is one of the most vital water resources, shared by 11 river countries in the northeastern region of Africa which suffers from the shortage of the rainfall data available. Precipitation estimations based on satellite products (PESPs) has recently emerged as a viable option instead of scarce in-situ rainfall measurements for a different hydrologic modeling, mainly in areas where data are limited. Consequently, geographical location, climate variability, and complex topography must all be considered when assessing the precise and the performance of PESPs because of its fluctuation from zone to another. The Blue Nile River is known as the NR’s most paramount tributary, supplying most of the river’s flow. Therefore, the ultimate purpose of this study is evaluated the eight high-resolution of PESPs (TRMM3B42V7, TRMM3B43RT, CHIRPS, PERSIANN, PERSIANN-CDR, CMORPH, GPCP-1DD, and CFSR) over the Blue Nile basin (BNB). To assess its skill of detection of rainfall amount and event correctly, the categorical and the continuous statistical indicators are applied during the period (1998-2013). In addition, the distributed Hydrological River basin Environmental Assessment Model (HydroBEAM) model was also used to appreciate their potentiality in prediction flow over the BNB. The monthly hydrologic simulation results were estimated at the Eldeim (the upper BNB’s outlet) and the Khartoum (the BNB’s outlet) stations during the period (1999-2013). The simulation period was classified into the calibration period (1999-2006) and the validation period (2007-2013). On the other hand, the Eastern Nile is considered as a pivotal region in the NR where it represents almost 83% of the total NR flow at Dongola in Sudan. Lately, the conflict potential over NR waters is rapidly increasing as a result of the endless population growing, agricultural expansion, and industrial improvement. As well, the future challenges such as proposed and existing reservoirs construction and development projects in upper NR’s countries and climate change that will affect Egypt’s share of the NR. Therefore, water supply availability must be quantified and predicted. As a result, a monthly hydrologic simulation driven by the HydroBEAM was also estimated in the Eastern Nile basin (ENB) at numerous gauges during the period (2001-2013) in order to determine the performance of the best of PESPs in predicting the flows. Otherwise, a successful attempt is made to adopt HydroBEAM to consider reservoir operation along the ENB. This trial can be utilized to provide a more realistic vision for the BNB’s flow under future challenges imposed by climate change or proposed and existing plans for new reservoirs construction along the NR.