Volume 13, No. 2, 2019
Received: 2019/03/14, Accepted:
Authors:
Ashhad Imam; Quamrul Hassan;
Abstract:
This paper deals specifically with the electrical resistivity method, which was applied for the exploration of groundwater potential and water-bearing strata at Jamia Millia Islamia (JMI) campus, so as to deal with the problems of water scarcity in the National Capital Territory of Delhi. Accordingly, four sites were identified at
JMI campus for electrical soundings; one for ground truthing, one for estimation of groundwater table and water-bearing strata and the other two to investigate the impact of the injection well located at JMI campus. Moreover, the soundings were carried out by a terrameter using Schlumberger and Wenner configurations. Additionally, the variation of apparent resistivity versus electrode spacing as well as the expected lithology for all the sites were also obtained. As a result, the resistivity method indicated that the depth of groundwater table
was available at about 18.3 m and goes to a depth of 47.6 m near pumping well (VES2). At the time of installation of the pump, the groundwater table was found at a depth of about 15.5 m. The groundwater table at VES1 was estimated at a depth of 11 m, also possessing sufficient water-bearing strata. The study revealed that
sufficient water was available near VES1 and VES2 as compared to other sites. The objective of the study was accomplished with substantial findings which further corroborate the effectiveness of the approach adopted for groundwater exploration.
Keywords:
Electrical resistivity, Geophysical investigation, Vertical electrical sounding (VES), Groundwater exploration, Schlumberger array, Wenner array