Mapping of dewatering impacts on ground water and soil quality using GIS

摘要

Dewatering is a technique used to lower the high-water table for safe construction purposes. On the long run, this process has been suggested to have negative impacts on groundwater/soil quality. This research deals with mapping the groundwater/soil quality (salinity) in the Silicon Oasis area in Dubai from the years 2005 to 2016, using GIS technology. The main goal of this project is to quantify and visualize the impacts of dewatering on the groundwater/soil quality. The field measurements of water table, groundwater qualities, soil salinity levels, and ground locations and elevations are used as a ground truth data for the analysis. The temporal and spatial variations of the groundwater/soil quality, in the study area, were determined. Then the impacts of the dewatering were quantified and evaluated. Thematic maps showing the variation were generated. Finally, the efficiency of the GIS technology in mapping the dewatering impacts is outlined.