Grey analytic hierarchy process applied to effectiveness evaluation for groundwater potential zone delineation |
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| Authors: | Satiprasad Sahoo Amlanjyoti Kar Prahlad Ram |
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| Institution: | 1. School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, India;2. Central Ground Water Board, Bhujal Bhawan, Faridabad, India;3. Department of Science &4. Technology, Earth and Atmosp'heric Sciences, Science and Engineering Research Board, New Delhi, India |
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| Abstract: | An attempt has been made to identify plausible groundwater potential zones (GWPZ) based on Grey Analytic Hierarchy Process Method (Grey-AHP) using integrated remote sensing and geographic information system. Grey-AHP combines the advantages of classical analytic hierarchy process and grey clustering method for accurate estimation of weight coefficients. The method also examines the effectiveness of GWPZ identification process. The proposed methodology has been applied to the Hirakud canal command area, Odisha (India). Feature layers e.g. soil type, geology] are utilized for groundwater potential index (GWPI) calculation. The resulting GWPI map has been classified into three GWPZ namely: good, moderate and poor. Effectiveness based on grey clustering method is found to be in between ‘better’ and ‘common’ classes. Value of coefficient of determination (R2 = 0.865) supports the obtained effectiveness evaluation result. This analysis demonstrates the potential applicability of the methodology for a general aquifer system. |
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| Keywords: | Groundwater potential Grey analytic hierarchy process (Grey-AHP) remote sensing GIS |
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