Preliminary Hydrogeology of the East Banyuwangi Coastal Plain Area, East Java Province
Putritansy Neysa (1,2), Heru Hendrayana (1), and Pulung Arya Pranantya (2)

(1) Departement of Geological Engineering, Gadjah Mada University, Yogyakarta, Indonesia
(2) Ministry of Public Works and Housing of Indonesia, South Jakarta, Indonesia

Abstract

Abstract: Banyuwangi Regency is located at East Java Province. The rapid development of tourism in the coastal areas of East Java is in line with the increasing population and increasing water needs. This research aims to address the sustainability of water resources. Therefore, hydrogeological concepts are needed to assess and estimate the potential of water resources to maintain water quality and quantity. The methodology used in this research includes geological mapping, hydrometeorological analysis, rock resistivity measurements and water quality testing. The research uses rivers as hydrological boundaries. Tekik River as north area hydrological boundaries and Sobo River as south area hydrological boundaries. The lithology of the research area is alluvium on coastal area and conglomerate rock and breccia on the west side of research area. The aquifer system in the research area has an intergranular space aquifer with a continuous level in the coastal area and a fissure and intergranular aquifer system with a low to medium continuous level in the west area. The hydrological conditions of the research area consist of parameters such as rainfall values of 1496 mm/year, evapotranspiration values of 1210 mm/year, runoff values of 212 mm/year, and groundwater recharge or infiltration of 74 mm/year.

Keywords: hydrogeological conceptual model, geology mapping, resistivity, Banyuwangi coastal area

Topic: Hydrology, hydrogeology, and geology engineering