GROUNDWATER CONSERVATION ZONE MAPPING OF BANDUNG-SOREANG GROUNDWATER BASIN BY AQUIFER-AQUICLUDE SYSTEM USING GROUNDWATER LEVEL DATA

• Main Author: Jie, Jesslyn
• Format: Final Project
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/77955
• Institution: Institut Teknologi Bandung

Bandung-Soreang groundwater basin in the area of 1,716 km2 is administratively located on the sub-districts of Bandung, Sumedang, Bandung Barat, Garut, and Bandung city. Previous report of Dinas Pertambangan dan Energi (Distamben) of West Java Province showed cone depression phenomena on groundwater basin, strongly driven by massive growth of industries and population. This is surely crucial as an input for groundwater management on Bandung-Soreang groundwater basin. This study aims to identify, record, and evaluate groundwater conservation on Bandung-Soreang groundwater basin. Methods used on this study comprise of literature research for regional geology and hydrogeology, together with Ministry of Energy and Mineral Resources Regulation of Indonesian Republic No. 31 Year 2018 as a guidance for data processing, delineation, and groundwater conservation analysis. Analysis results show the conservation zone of Bandung-Soreang groundwater basin is classified to 62% of groundwater protection zone and 38% of groundwater utilization zone. On groundwater protection zone, that area of 1.053,5 km2 still contains 36 industrial groundwater extraction wells, especially from tourism sector. On groundwater utilization zone, interpolation results on that area of 642,3 km2 are dominated with broken zone (53.7%), followed with safe zone (22.58%), vulnerable zone (4.27%), and critical zone (5.3%), while the rest (14.29%) being unclassified due to the lack of local data. It is strongly suspected to happen because of concentrated industrial groundwater extraction, especially in Cimahi City, Bandung City, and Rancaekek Regency which have cone depressions and average groundwater level drawdown velocity of 1.58 m/year. Therefore, groundwater conservation monitoring system is highly recommended in distributed groundwater extraction, data inventory technology adaptation, and well location investigations.