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Determining Groundwater Recharge Potential Zone in Yogyakarta: Remote Sensing and GIS Approach
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE-HAGI 1st Asia Pacific Meeting on Near Surface Geoscience and Engineering, Apr 2018, Volume 2018, p.1 - 5
Abstract
Yogyakarta is one of most-populated provinces in Indonesia having a high groundwater utilization. Most of water usages are still derived from groundwater resource. This condition is exacerbated by urbanization process which has a big deal on decreasing recharge area of groundwater due to land use change. To understand the water balance and the vulnerability of groundwater in Yogyakarta, the recharge area of groundwater need to be analyzed. The quantifying of recharge potential zone in Yogyakarta, was conducted by the integration of all factors influencing the hydrogeological process, those are lithology, land cover/land use, lineament and drainage frequency density, and geomorphology. The data were gained from satellite images (DEM and Landsat 8) and other exogenetic data (geomorphologic and geologic map). A GIS approach was used to integrate each influencing factor which has its own degree of effect. The groundwater recharge potential zone in Yogyakarta is well estimated using this method.