الفهرس 
Title : Assessment of groundwater potential for some of Nile river basin countries (Egypt, Tanzania and Kenya)
AbstractOnly 14 pages are availabe for public view
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Abstract
Estimation of the groundwater potential is extremely important for the groundwater management in Nile Basin countries especially in arid regions. Three case studies in Toshka in Egypt, Same in Tanzania and Machakos in Kenya, respectively; were selected to assess the groundwater potential and quality on each of them. Assessment of groundwater aquifers was estimated in the selected areas using some approaches such as Aquifer test, Aquachem and Visual modflow software program and some auxiliary program such as Surfer, Excel and ArcGIS. Different development scenarios were made. Analyzing the results from the used approaches exhibited that the safe discharge and corresponding drawdown were determined in Toshka by 1,440 m3/day with expected drawdown of 17.5 m after 100 years. Also the annual recharge in Toshka from the Lake Nasser was estimated by 308,425 m3/year/km and the minimum and maximum transmissivity was found as 350 and 1,558 m2/day, respectively. Chemical analysis for 38 water samples in Toshka showed that sodium adsorption ratio (SAR) in the area was not more than 3.3 epm and residual sodium carbonate (RSC) was negative for all samples, meaning a good class for irrigation purposes and salinity that ranges from 500 to 1,000 ppm. The approaches were used to generate the hydrologic maps in selected areas