The Priority Areas for Groundwater Utilization in Fractured Rock Formation, Pangandaran Regency

Abstract

Abstract Pangandaran Regency is one of the best tourist destinations in West Java; many tourist attractions and regional developments to facilitate visiting tourists increase the need for water. However, in some areas of Pangandaran Regency, it is included in the rare groundwater zone according to its aquifer productivity, especially in the fracture rock formation, so it is necessary to conduct research related to the presence of groundwater in the area. This study aims to determine priority areas for the development of groundwater utilization in fractured rock formations located in the Pangandaran Regency. The fracture rock formations in Pangandaran Regency are located from the northwest to the southeast; on the regional geological map, the formation’s name is the Jampang Formation. This study used the Groundwater Potential Index (GPI) method to determine groundwater potential and the Analytic Hierarchy Process (AHP) method to determine water utilization area levels. The parameters used are fracture (F), lithology (L), drainage (D), topography (T), rainfall (R), water usage, land use, and population distribution. This research shows that areas with rare groundwater zones still have groundwater potential that can be developed to meet water needs. There are five priority area classifications: very high is 19 km2, high is 17.92 km2, medium is 67.90 km2, low is 70.99 km2, and very low is 162.40 km2.