Geophysical and Hydrogeological Evaluation of Pliocene Aquifer in East Esna, Egypt
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The current study of East Esna area was selected due to its prosperous conditions. In this area, the reclamation of agricultural land is increasing and the population is growing, which necessitate an equivalent development of groundwater. The main aim of the study was to estimate geometrical and qualitative characteristics of the study aquifer. This will help to have a systematic view of the hydrogeological setting in the area of investigation, categorize and evaluate the influential factors of existence, quality, and protection of the groundwater. The geometrical characteristics of the local aquifer were revealed by using 45 VES and TEM soundings. The study area has two main aquifers. Both hosted in sandstone of Issawia formation. The brackish groundwater lies above the fresh groundwater, which is shielded by Esna shale at the bottom. The source of feeding to these aquifers is direct leakage of runoff and rain on the east side with sporadic leaks from the waters of the River Nile on the west side. The analyzed groundwater samples are geochemically homogenous, indicating that their genesis is rain water. They also belong to Na–Ca–SO4–Cl type. The groundwater in the study area is assessed for drinking, household, livestock, and agricultural purposes. The current study recommends some advises for groundwater development in the study area.
KeywordsGeophysical investigation geochemical evaluation hydrological aspects East Esna aquifer potentiality
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