Estimation of Groundwater Potential Using Geoelectric Methods in East Kupang Region, Kupang Regency, East Nusa Tenggara Province

Abstract

This study aims to analyze rock units containing aquifers in the study area using geoelectric measurements using the Schlumberger configuration method using the Resistivity Meter MC OHM 2115. Measurements were carried out as many as 12 measurement points and the length of each track was 150 m. The data processing of the measurement results was carried out using IP2WIN software followed by using Corel Draw X6 software. The results of the interpretation of 12 measurement points showed that there were 5 units of rock, namely 0 ≤ 2 Ohm m type resistance interpreted in the form of clay. The 2.5 ≤ 10 Ohm type of prisoner is interpreted as a napal. The 10.5 ≤ 20 Ohm type resistance is interpreted as napalan limestone, while the ≥ 20.5 Ohm m type resistance is interpreted as reef limestone. The aquifer in the study area is interpreted to be in layers of sand, gravel, gravel, and bolder. which is immediately terminated with an impermeable layer like clay. Based on the results of the interpretation, it was concluded that along the 12 measurement points there were only 11 aquifer points with varying depths, which could be optimized by making dug wells at points KT 01, KT 05, KT 11, KT 14 and KT 15, drilling work at points KT 02, KT 12, KT 21 and KT 22. But the location of KT 19 can be carried out well work at a depth of 7m – 20m and drilling work at a depth of 45m – 101. The KT 20 location can also be carried out well work at a depth of 8m-21m and drilling work at a depth of 44m – 102m.