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The contribution of geographic information systems and remote sensing in determining priority areas for hydrogeological development, Darb el-Arbain area, Western Desert, Egypt |
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| Authors: | Hossam H Elewa Rafik G Fathy Atef A Qaddah |
| Institution: | 1. National Authority for Remote Sensing & Space Sciences (NARSS), 23 Jozef Brows Tito St., El Nozha El Gedida, 11769, P.O. Box 1564 (Alf-Maskan), Cairo, Egypt 2. General Authority for Rehabilitation Project and Agricultural Development (GARPAD), 14 Tahran St., Dokki, Giza, Egypt 3. Egyptian Environmental Affairs Agency (EEAA), Teraat El Mansuriyah St., El-Mansura, Egypt |
| Abstract: | The Darb el-Arbain study area is in the southern Western Desert of Egypt and has been attracting increasing developmental interest in the last few decades, especially since agricultural development of the southern Baris area, where the groundwater resources of the Nubian Sandstone Aquifer System (NSAS) have been utilized for the cultivation of valuable lands. Due to the proven high potential of both groundwater and land resources, determining the priority areas for sustainable hydrogeological development becomes a necessity. A geographic information system, as a platform for geospatial modeling techniques, has been built, which depends on the recently collected data about the NSAS, in addition to the published databases. Certain criteria of practical value, like depth to groundwater, hydraulic conductivity, groundwater salinity, sodium adsorption ratio, and the safe yield of wells, were selected as decisive parameters for hydrogeological prioritization. The model pinpoints areas characterized by favorable hydrogeological conditions, which could be used for future development and implementation of an artificial storage and recovery (ASR) program. The designated priority areas for hydrogeological development occur at the southern, middle southern and some localized northern parts of the Darb el-Arbain area. The newly formed Tushka Lakes represent a suitable and excellent natural source of freshwater for implementing an ASR program. |
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