الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The Nile River is an international river and its branches pass through eleven countries with two major tributaries; the White Nile and the Blue Nile. It is considered the main water resource and life artery for its downstream countries Egypt and Sudan. In this research, the Hydrological River Basin Environmental Assessment Model (Hydro-BEAM) is used to simulate the surface discharge in the Blue Nile Basin during the period (1995-1999) using a long‐term global atmospheric reanalysis product, namely Japanese 25‐year reanalysis (JRA-25). These data include precipitation, temperature, pressure, wind speed, specific humidity, downward short‐wave radiation, upward short‐wave radiation, downward long‐wave radiation and upward long‐wave radiation. The simulated discharge was examined and calibrated at Khartoum, Sennar dam and El Deim gauging stations. Good agreement obtained between the observed and the simulated discharges. The criteria for model performance was checked with the coefficient of determination (R2) based on the observed and simulated monthly stream flows over the calibration. The model used in this study provides a viable tool to assess and predict the availability of water resources under future challenges imposed by climate change or proposed and existing dams construction in upper Nile countries.