Underground Water-Level Monitoring by Integrated Study of Geoelectric, Logging, Cutting and Pumping Data in Industrial Area of Candi Sub-District, Sidoarjo

Abstract

Monitoring of underground water level with integrated data of geoelectric, logging, cutting and pumping has been done in industrial area of Candi Sub-district, Sidoarjo, which is productive aquifers with widespread area. The integrated study showed that monitoring aquifers in industrial wells has carried out at depths of 140-165 meters. The lithology of the aquifer layer consists of sand layer, clay, and gravel with a low resistivity value of 14.7 to 46.8 ohmmeters. The monitoring results showed that the use of underground water at night was higher than the day and the use on workday was higher than on holiday. The stable debit generated by monitoring wells was 8.41 lt/sec and the groundwater level would return to stable 2.17 meters if the well is rested for 3 hours. The implication of this study was monitorable of the dynamics underground water levels periodically. ABSTRAKMonitoring level air bawah tanah dengan kajian terintegrasi data geolistrik, logging, cutting, dan pumping telah dilakukan pada kawasan industri kecamatan Candi -Sidoarjo, yang merupakan daerah akuifer produktif dengan sebaran luas. Kajian terpadu menunjukkan bahwa monitoring akuifer dalam sumur-sumur industri dilakukan pada kedalaman 140-165 meter. Litologi lapisan akuifer tersebut berupa lapisan pasir, lempung, dan kerikil dengan nilai tahanan jenis rendah sekitar 14,7 sampai 46,8 ohm-meter. Hasil monitoring menunjukkan penggunaan air dalam pada malam hari lebih tinggi daripada siang hari dan penggunaan pada hari efektif lebih tinggi daripada hari libur. Debit stabil yang dihasilkan dari sumur pantau adalah 8,41 lt/detik dan muka air bawah tanah akan kembali stabil 2,17 meter apabila sumur diistirahatkan selama 3 jam. Implikasi dari penelitian ini adalah terpantaunya dinamika muka air bawah tanah secara periodik.

Application of Induced Polarization and Resistivity Methods to Identify Subsurface Layers in Bauxite Deposits Area of Kendawangan, West Kalimantan

“…Thus, a material with higher resistivity means more difficult for electric current to pass (Dentith & Mudge, 2014). This method is often used to identify subsurface conditions, for example, estimation of bauxite distribution (Bolaji et al, 2019;Tira, Arman and Putra, 2015), subsurface layers lithology (Muhardi & Wahyudi, 2019), aquifer layers lithology (Jufriadi & Ayu, 2019), the presence of groundwater (Muhardi, Perdhana and Nasharuddin, 2019), the potential for landslides (Muhardi & Wahyudi, 2020), and the thickness of the peat layer (Muliadi, Zulfian and Muhardi, 2019).…”