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APPLICATION OF HYDROGEOLOGICAL MAPPING AND GEOSPATIAL ANALYSIS TO DETERMINE RECHARGE AND DISCHARGE AREAS IN SUMOWONO GROUNDWATER BASIN
Thomas Triadi Putranto (a*), Novie Susanto (b), Dina Rahayuning Pangestuti (c), and Kevin Alexander (a)

(a) Geological Engineering Department, Diponegoro University, Jl. Prof. Sudharto, Tembalang, Semarang 50275, Indonesia
*putranto[at]ft.undip.ac.id
(b) Industrial Engineering Department, Diponegoro University, Jl. Prof. Sudharto, Tembalang, Semarang 50275, Indonesia
(c) Public Health Department, Diponegoro University, Jl. Prof. Sudharto, Tembalang, Semarang 50275, Indonesia


Abstract

Sumowono groundwater basin is located in Semarang Regency, Temanggung Regency, and some part in Kendal Regency. Increasing population growth in the Sumowono groundwater basin area is the cause of increasing water demand. For this reason, the government provides an alternative to using groundwater as a source of fresh water. This study aims to determine groundwater utility by the community, the value of each determinant parameters of the recharge area, the distribution of recharge and discharge areas. The research methods were hydrogeological mapping and geospatial analysis, which includes combining several geological and hydrogeological parameters, namely hydraulic conductivity, precipitation, soil cover, slope, water table depth, and electrical conductivity (EC). Based on the result of the hydrogeological mapping, groundwater is mainly used for irrigation, fisheries, industry and domestic purposes. The soil covers consist of sandy clay and clay sand, the slope has a value of 0°-40°, rainfall has a range 2,500-3,200 mm/year, depth of water table is up to 20 m below ground surface. The hydraulic conductivity values are 3.1 m/day (tuffaceous sandstone), and 270 m/day (volcanic breccia) with the EC values is 37-537 µS/cm. Based on the results of the geospatial analysis, the recharge area is spreading in the south and the east, while the discharge area is located in the northern part of the study area.

Keywords: Geospatial analysis, Groundwater, Hydrogeological mapping, Recharge area, Sumowono groundwater basin

Topic: Environment, Health, and Safety

Link: https://ifory.id/abstract/zNhgWYduA2xa

Conference: The 1st International Conference on Environment, Sustainability Issues and Community Development (INCRID 2019)

Plain Format | Corresponding Author (Thomas Triadi Putranto)

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