#TITLE_ALTERNATIVE#

• Main Author: VINA FEBRIM (NIM : 12012087), DWI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26801
• Institution: Institut Teknologi Bandung

<p align="justify"> <br /> <br /> The study area is located in Indralayang, Caringin District, Garut Regency, West Java. This area is composed by Bentang Formation deposited in Late Miocene. This area is part of Rancabuaya growth center, one of growth centers located in the southern West Java. The geological and hydrogeological information in this area is very limited, yet, the information is very important in supporting the growth in the area. The purpose of this study is to know detailed geologic and hydrogeologic conditions of the <br /> <br /> study area. The study was conducted by field geological and hydrogeological works, and laboratory analysis. The works within the field works are geological mapping, measurement of physical parameter of water, geoelectric survey, and hydraulic head mapping. Meanwhile, the laboratory analyses include petrographical, paleontology analysis, hydrochemistry, and stabil isotope analysis. <br /> <br /> Based on this work, it is known that the study area is divided into three unofficial units,i.e. Tuffaceous Sandstone 1, Tuffaceous Sandstone 2, and Alluvium and Beach sediments. The structure in the study area are joints trending north-south and northeast-southwest. There is one aquifer system in the study area, i.e. unconfined aquifer. It is interpreted to be composed of Tuffaceous Sandstone 1 and Tuffaceous Sandstone 2 with the porosity can reach 25%. The thickness of the aquifer is approximately 85 meters with resistivity ranging from 3.94 <br /> &#937;m to 27 &#937;m. Recharge area is located above the unconfined aquifer because water can move directly from the surface into the aquifer. Springs recharge area in the study area is located on the elevation of 704.61 meters above sea level to 742.5 meters above sea level located on the Southern Mountains Zone. The direction of groundwater flow in the research area is from northeast to southwest. The groundwater flow pattern follows the pattern of topographic contour, i.e. from higher elevation to a lower elevation. Groundwater study area has the characteristic of sodium-bicarbonate facies. The result of physical parameter measurement and hydrochemical analysis show that the groundwater in the study area can be used as drinking water source. <p align="justify"> <br />