Abstract
Population growth in Tanah Bumbu Regency South Borneo Province is causing increased water demand. To fulfil the water needs, the government provides an alternative water resource by using groundwater as a source of fresh water. The objective of this research is to delineate the groundwater recharge zone. The methods were hydrogeological mapping and spatial analysis approach to delineate the groundwater recharge zone. There were six parameters applied in the research, i.e. hydraulic conductivity, rainfall, slope, soil cover, water table depth, and electrical conductivity. The varies of hydraulic conductivity are 45 m/day (sandstone), 0.94 m/day (limestone), 0.49 m/day (alluvium) and 0.2 m/day (serpentinite). Rainfall has a range from 2,106 to 2,403 mm/year. There are several types of soil cover which are gravel, sand pebbles and clay sandstones. The slopes are varying from below 5° to 40°. The groundwater depth is varying from below 5 m to 10 m depth. Furthermore, the electrical conductivity of groundwater samples has a value around 14.9-1,477 μS/cm. Overlying all parameters in spatial analysis resulted in the recharge area spread in the north, centre, and northwest of the study area.
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More From: IOP Conference Series: Materials Science and Engineering
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