GIS and AHP Based Groundwater Potential Zones Delineation in Chennai River Basin (CRB), India

Pazhuparambil Jayarajan Sajil Kumar, Lakshmanan Elango and Michael Schneider
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Pazhuparambil Jayarajan Sajil Kumar: Hydrogeology Group, Institute of Geological Sciences, Freie Universität Berlin, 12249 Berlin, Germany
Lakshmanan Elango: Department of Geology, Anna University, Chennai 600025, India
Michael Schneider: Hydrogeology Group, Institute of Geological Sciences, Freie Universität Berlin, 12249 Berlin, Germany

Sustainability, 2022, vol. 14, issue 3, 1-22

Abstract: Groundwater depletion is one of the most critical concerns for users and policymakers. Identifying groundwater potential (low to high) helps properly plan the available groundwater resource. This study has used the possibilities of a geographical information system (GIS), remote sensing and, of course, field data to delineate the groundwater potential zones in the Chennai River Basin (CRB). Thematic layers generated for eleven controlling factors, such as geology, water level, drainage, soil, lineament, rainfall, land use, slope, aspect, geomorphology, and depth to bedrock, were brought into the GIS environment. Then, appropriate weightage was given to each layer using a multi-criteria decision-making technique, namely, the analytic hierarchical process (AHP). A groundwater potential map is generated using weighted overlay analysis, with the following five classes: very poor, poor, moderate, good, and very good. The results were comparable to the actual specific yield data from the field and accuracy was 78.43%. Thus, AHP-aided GIS–RS mapping is a useful tool in groundwater prospecting in this region of the world.

Keywords: groundwater potential; AHP; thematic layers; GIS; Chennai River Basin (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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