An Appraisal of Geomorphic Characteristics and Flood Susceptibility Zone using Remote Sensing and GIS: A Case Study in Bongaon Subdivision, North 24 Parganas (West Bengal), India
Raja Majumder, Debashish Kumar Ghosh, Anukul Ch. Mandal, Poly Patra, Gouri Sankar Bhunia
Citation :Raja, Majumder et al, An Appraisal of Geomorphic Characteristics and Flood Susceptibility Zone using Remote Sensing and GIS: A Case Study in Bongaon Subdivision, North 24 Parganas (West Bengal), India International Journal of Research in Geography 2017,3(4) : 32-40.
Flood hazard is one of the most severe natural hazards in Bongaon sub-division, North 24 Parganas. In this study using multi-temporal satellite data and Geographic Information System geomorpho logical features were identified to define the flood susceptibility. Different landforms (river channel, channel bar, back swamp, natural depression, meander scar, alluvial plain, ox-bow lake, and paleochannel) observed in the sub-division are the outcome of the practice of erosion and deposition that functioned in the ancient and are still enduring. The areas of abandoned river channel, paleochannel, Ox-Bow Lake, back swamp and deep depression were created due to the location adjacent to very high susceptibility zone. Very high susceptibility zones were identified in the south-east, north east and small pockets of central and northern part. Very low flood susceptibility zones were located/marked in the west of the sub-division. Results derived in this study provide baseline information about the flood prone zones for determining and planning for disaster management of the flood situation.