Integrating remote sensing and GIS for identification of groundwater prospective zones in the Narava basin, Visakhapatnam region, Andhra Pradesh |
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Authors: | K Narendra K Nageswara Rao P Swarna Latha |
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Affiliation: | 128. Department of Civil Engineering, GITAM University, Visakhapatnam, 530 045, India 228. Discipline of Geography, Indira Gandhi National Open University, Maidan Garhi, New Delhi, 110 068, India 328. Department of Geography, Andhra University, Visakhapatnam, 530 003, India
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Abstract: | This paper mainly deals with the integrated approach of remote sensing and Geographical Information System (GIS) to delineate groundwater prospective zones in Narava basin, Visakhapatnam region. The various thematic maps generated for delineating groundwater potential zones are geomorphology, geology, lineament density, drainage density, slope and land use/land cover (LULC). Weighted index overlay (WIO) technique is used to investigate a number of choice possibilities and evaluate suitability according to the associated weight of each unit. The integrated map of the area shows different zones of groundwater prospects, viz. very good (18.9% of the area), good (26.4% of the area), moderate (17.1% of the area) and poor (37.6% of the area). The categorization of groundwater potential was in good agreement with the available water column in the basin area. |
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