الفهرس 
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Abstract
The groundwater resources play a tremendous important role in the different activities that carried out in the studied area and also similar areas. These activities include tourist, industrial and agricultural projects. Therefore, the Egyptian government does great efforts to establish these new communities and solve any problems, which may face the investors during their work. It is obvious that the most important problems are how to get cheap, good quality and a long life water resource. This target can be achieved by two ways; namely; the good design of the production well, and the continuous well-maintenance and characteristics observation. So, the present work has aimed to evaluate the water resources management of the study area through two approaches:
** The First approach: Evaluation of water well characteristics and design criteria (well deterioration phenomena):
Well performances and characteristics have been assessment by applying (41 step drawdown tests) and completely analyzed by two methods: 1. manual method (manual calculation & graphical analysis method), 2. G.W.W software (Ground-Water under Windows; Version 1.10, Y 2005, Xp upgraded).
Water well productivities assessment have been deduced and graphically illustrated through out the study area, and then the future investment plan could be obtained or suggested.
Design criteria of studied wells have been technically investigated, and compared with ideal ones to illustrate and explain failure phenomena.
Finally; the results have been discussed and suitable suggestions are recommended, as best solutions to construct a more economic and efficient production wells more safety with along life to complete the water resources management..
** The Second approach: Water bearing formation evaluation:
Quantitatively the water bearing formation in the area has been evaluated by applying several pumping tests, step drawdown tests and the MODFLOW software (Version 3.0, Y 2006).
Qualitatively, the groundwater is evaluated by an iso-salinity distribution, zonation and contour maps.
Hydrological data base bank has been constructed by using Microsoft Excel (Version 2007) and GIS program such as ArcGIS, and ArcInfo (Versions, 9.0 & 9.2).
Moreover; the hydraulic parameters of the water bearing formations were determined and evaluated through 46 pumping tests and 39 recovery tests carried out on selected drilled wells. Also, data collected of 17 pumping tests which carried out from previous studies.
On the other hand the ground elevation of the study area is illustrated by a Digital Elevation Model (DEM).
Due to the groundwater depths (46.1m – 186.45m from the ground surface) of middle and southern portions (whole of the study area except coastal zone), the rainfall replenishment is nearly absent.
Based on the output results of mathematical model, the northern and northwestern portions are characterized by reasonable potentiality of groundwater. Moreover, the eastern and southern portions reflect limited aquifer potentials.
Finally, the obtained results and suitable suggestions have been discussed and recommended.