الفهرس 
Approved Sheet
General OutlineOnly 14 pages are availabe for public view
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Abstract
One of the important projects that Egypt country seeks to implement is the desert areas development, which contributes significantly to agricultural and urban development. Development of desert areas, especially agricultural development, should be carried out scientifically in terms of the use of available water resources, irrigation methods according to the type of soil and taking the geo-environmental risks into consideration. The objective of this study is to assess the geoenvironmental impact in the region under consideration and their effect on natural components during development phases and determine the chemical composition of groundwater and asses of its quality. Estimating the rate of land-use/land-cover changes in the area is extremely important for the natural resources management. Remote sensing and GIS techniques have been used to process the geological, topographical, landuse/land-cover and also for locating the high-risk areas that could be affected by flash flooding. Three land-cover classes were distinguished urban, agricultural and barren land. The expansion in the agricultural and residential areas was estimated from the Landsat satellite images from 1984 to 2018. The results had deduced the reasons for increasing the agricultural area and the validity of the western plateau lands for agricultural reclamation as well as land investment for residential projects such as Nasser City. The results indicate that the vegetated land increased by 9.68% and urban land by 3.17%. The Eocene limestone aquifer is the main aquifer in the area is composed of fractured carbonate rocks, while the area is bounded by Quaternary aquifer from the eastern side .The depth to water increases from east to west, while the water table increase in the northern part in the study area it reached to 58 (m. asl) that probably mean the recharge source from upward leakage from the Nubian sandstone aquifer, while water table decrease toward the southern part of the study area that is mean the recharge source from local seepage from the Quaternary aquifer in addition to percolation of the modern precipitation, occasional flash floods. The chemical analysis of 53 groundwater samples collected from the productive wells showed that the groundwater salinity increases eastward. Schoeller diagram indicate a relatively low to moderate salinity and the following general patterns were recognized Na+>Ca+>HCO3>Cl->SO4>Mg. This result is similar to stiff diagram which shows the abundance of sodium cations and bicarbonate anions. The study showed that most of groundwater wells are suitable for irrigation and animals uses.