الفهرس 
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Abstract
Despite of the great activities of the Egyptian Government to reclaim and sustain the development plans along Wadi Feiran basin, but there are many environmental hazards that threat continue of life there. The lacking of pure, clean and healthy water is a major environmental hazard issued from continuous depletion of the groundwater levels in the most productive wells as well as impairing of the groundwater quality, which arises naturally from scarce precipitation and artificially as a result of man-made activities.
The objective of this study is to find an ambitious plan for solving the major groundwater problem, which facing the investigated area through proposing of a groundwater management scheme to augment the groundwater through conserving the surface runoff water from one hand and improving its quality from the other hand. To reach and verify the goal of this work, geomorphological, geophysical, hydrogeological and hydrogeochemical studies have been applied.
Hydrographically, Wadi Feiran basin is subdivided into fifty-nine drainage sub-basins attached with a coding system for easily recognition. These sub-basins are quantitatively studied to examine the water recharge-discharge relation and classified into four flooding categories based on different mathematical and graphical techniques and finally formulated in an assessment map.
Magnetic and electric techniques are applied along four drainage sub-basins of high and risky flooding probability to delineate suitable sites for applying the artificial recharge design.
Three aquifers are dominating the studied basin namely; Pre-Cambrian fractured basement rocks, Quaternary alluvial aquifer and Pre-Cenomanian (Nubian) sandstone aquifer. Description, constitution and hydraulic properties are discussed for each aquifer. Bicarbonate waters was prevailed along the studied basin and replaced by chloride water. Nitrate, Phosphate, Lead, Cadmium and bacteriological species contaminate the groundwater.
The estimation of the main components of the water-budget equation before and after applying the artificial recharge design is of prime importance. The rainfall quantity that precipitates over Wadi Feiran basin is estimated equal to 17.9 million-m3/rainy storm exceeding 10 mm and has a concentration time (Tc) 10.59 hrs. The runoff quantity, which can be resulted due to this rainfall, may reach 11.4-million m3/rainy storm (64 % of the rainfall). The potential evaporation (PE) in this case is estimated as 3 million m3/rainy storm (about 16% of rainfall quantity), considering that the average evaporation rate reaches 4.1 mm/day. Therefore, the surplus waters that infiltrates and recharges the groundwater aquifers are estimated to attain 3.5 million m3/rainy storm (about 20% of rainfall quantity). Thirty-three cisterns are recommended to be constructed with an average storage volume of 7920 m³, whereas in areas of high field capacities, artificial recharge to groundwater is applied. The storage capacity of this design may reach as maximum as 1.3 million m3 of water per storm event exceeding 10 mm depth.