PREDICTING GROUNDWATER QUALITY AT WADI EL-NATRUN AREA EGYPT BY USING SATELLITE DATA AND GIS

Abstract

The main aims of the present study are assessing of the quality of groundwater aquifer at Wadi El-Natrun area integrating remote sensing (RS) technology and geographical information systems (GIS) as effective tools for monitoring environmental change and the impacts of this change on the quality of groundwater and water resources. The topographical characteristics of the Wadi El-Natrun area were determined by the use of the SRTM DEM with an accuracy of approximately 90 m as a GIS tool, morphometric parameters (linear aspect (La) the Areal aspects (Aa) and Relief Aspects (Ra)) of main basins at Wadi El-Natrun were detected, geological and morphological maps of Wadi El-Natrun were updated. Integrate between (RS) and (GIS) was used to detect the reclamation processes occurred during the pried 1984, 2003 and 2016. The remote sensing images of Landsat Thematic Mapper (TM) of 1984, 2003 and Centennial two of 2016 have been used. Land cover/land use and change detection maps were prepared, which indicate the rapid change in the Wadi El-Natrun area and the heavy increase of the agricultural patch and urban expansion in Wadi El-Natrun area.