Geospatial approach to determining potential of springs at the Palu Groundwater Basin for post disaster water supply in Central Sulawesi Province

Abstract

The disaster that occurred on 28 September 2018 in Palu City, Sigi and Donggala regencies had an impact on damage to a number of water resource. This study aims to determine the quantitative potential of springs with using a geospatial approach and hydrogeomorphological mapping. Based on the results of the field survey, the springs in Palu Groundwater Basin amounted to + 104 springs with divisions in the east and west. The results showed that in Palu Groundwater Basin the appearance of springs was not only caused by geomorphological conditions but also influenced by geological conditions. Based on the type of springs, it is dominated by the type of artesian, fracture and contact. The quantitative potency level of springs ranges from small (< 5.0 liters/second) to large (> 10.0 liters/second) quantitative potency levels. Small quantitative potential levels (< 5.0 liters/second) in the eastern part include the districts: East Palu, South Palu, Dolo and Biromaru. The western part of Palu Groundawter Basin includes the sub-districts: West Palu and South Palu. Based on the results of the study, it can be concluded that the quantitative potential of springs is very potential to meet the needs of clean water in post-disaster areas.