Determination of priority areas for the development of groundwater utilization in Pangandaran Regency

Abstract

This research has the goal of determining priority areas in the Pangandaran Regency, which are the main priority in developing groundwater utilization. This research uses the Groundwater Potential Index (GPI) method, which is modified to suit the research area, and adds aspects of groundwater utilization parameters to find priority areas for developing groundwater utilization. In determining groundwater development priority areas, data from remote sensing and Geographic Information Systems (GIS) are needed, which are processed using the GPI and Analytic Hierarchy Process (AHP) method. This study uses eight parameters, including fracture (F), lithology (L), drainage (D), topography (T), rainfall (R), water utilization, land use, and population. The results of the analysis show that in areas with moderate levels of drought, there is still the possibility of groundwater potential, and it can be developed according to the level of water utilization. It was also found that the relationship between areas with very high groundwater potential and groundwater utilization will have the highest priority value in developing groundwater utilization. The estimated areas are divided into five zones: very high is 21.92 km2; high is 161.83 km2; medium is 407.87 km2; low is 502.45 km2; and very low is 7.07 km2.