DRASTIC model developed with lineament density to map groundwater susceptibility: a case study in part of Coimbatore district, Tamilnadu, India

Krishnakumar Subramanian (), V. Sreevidya, R. Venkatasubramani and Vivek Sivakumar
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Krishnakumar Subramanian: Sri Krishna College of Technology
V. Sreevidya: Sri Krishna College of Technology
R. Venkatasubramani: Dr. Mahalingam College of Engineering and Technology
Vivek Sivakumar: GMR Institute of Technology

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2023, vol. 25, issue 9, No 60, 10423 pages

Abstract: Abstract Groundwater has never been relied on as much as it has been in sections of Coimbatore in the previous two decades due to fast and unplanned urbanisation, industrial, and agricultural expansion. This report seeks to give local and regional planning authorities with a brief groundwater vulnerability assessment of the section of Coimbatore region in order to guarantee more sustainable growth in the area. The part of Coimbatore region, which covers Pollachi, Sulur and Coimbatore south in eastern part of Tamilnadu, is the study’s focal point. The conventional DRASTIC model is used to map the initial groundwater vulnerability assessment. It is then altered by adding “lineament density index” to the original seven DRASTIC features, due to the previously established high correlation between groundwater flow and yield and lineament. The final drastic index map was classed into five categories: very low, low, medium, high, and very high vulnerability, with each covering an area of 840.26, 732.58, 583.46, 183.17, and 167.13 km2. The modified drastic index is classified the same five categories, with 965.35, 880.14, 399.21, 158.29, and 103.54 km2 of land covered in each. Alanthurai, Thodamuthur, Pichanur, and Pollachi are among the most susceptible places in the state. This groundwater vulnerability map will be used to aid in groundwater pollution management and planning.

Keywords: Groundwater; DRASTIC; Lineament; Contamination; Vulnerability (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10668-023-03506-4

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