Tags:AHP, GIS, Groundwater Recharge, Saudi Arabia and Yalamlam
Abstract:
In arid and semi-arid locations like Yalamlam, sustainable groundwater resource management is of utmost importance. The identification of appropriate regions for the recharging of groundwater is a crucial undertaking in addressing the issue of water shortage and maintaining the sustainable existence of aquifers in the long run. The present research utilizes the Analytical Hierarchy Process (AHP) methodology, in combination with Geographic Information Systems (GIS), to demarcate the zones with potential for groundwater recharge in the Yalamlam basin. The study technique includes the collection of fundamental hydrogeological data, such as lithology, land use, precipitation, slope, and soil properties. AHP is used to allocate relative weights to various characteristics, taking into consideration their importance in affecting groundwater recharge. GIS is then used to undertake the processing and analysis of these weighted layers, culminating in the production of a complete map depicting the potential for groundwater recharge. The integration of AHP with GIS enables a comprehensive evaluation of the many elements that impact groundwater recharge. The findings of the research indicate the presence of discrete zones with varying capacity for groundwater recharge in the Yalamlam area. Areas with significant recharge potential are often found in regions that exhibit favorable lithology, moderate slopes, little land use disturbances, and increased precipitation. On the other hand, regions characterized by poor geological features and intensive land use practices tend to exhibit a high prevalence of low recharge potential zones. The aforementioned results provide crucial insights for the implementation of sustainable groundwater management techniques, hence aiding in the formulation of policies pertaining to specific interventions aimed at groundwater recharge.
Delineation of Groundwater Recharge Potential Zones Using GIS and AHP Approaches (Case Study: Yalamlam Area, Saudi Arabia)