Hydrogeology Study of Bungbulang-Rancabuaya, Garut Regency, Southern Most of West Java Province

• Main Author: RIEZQI RAMADHAN (NIM: 12012023), REZA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30374
• Institution: Institut Teknologi Bandung

<p align="justify">The study area is located in Bungbulang – Rancabuaya, Garut County, West Java Province. Rancabuaya is a new center of development for southern part of West Java Province. The area is relative lack of details geologic and groundwater information, yet the information is very important parameters to develop an area. This study aims at analysing detailed geologic condition and <br /> <br /> Hydrogeology in this new center. <br /> <br /> Two general methods, i.e. geologic and hydrogeologic field works, and laboratory analyses have been performed in this study. The field works include geological mapping, geoelectric survey, and hydraulic head mapping. Meanwhile, the laboratory analyses include petrographical analysis, <br /> <br /> groundwater chemical and stable isotope analyses. <br /> <br /> Based on the above works, it is known that the study area is composed of three geologic units, i.e. Sandstone, Tuffaceous Sandstone, and Breccia. The aquifer is thought to be located at the Sandstone Unit, with the porosity of 20 % and the thickness of about 65 m. The groundwater flow <br /> <br /> direction is from the northeast to the southwest of the study area. The result from six groundwater samples shows that the groundwater in the study area is dominated by bicarbonate water (HCO3-). It is interpreted that the main source of the bicarbonate is from meteoric water. The isotope analysis from four groundwater samples shows that the recharge area is located at the elevation interval of <br /> <br /> 521 – 788 masl (metre above sea level). The groundwater quality in the study area can be categorised as proper groundwater to consume. Overall, the groundwater in the study area is sufficiently available, qualitatively and quantitatively, to support the development in this area. <palign="justify">