Coastal Vulnerability Index

News: Indian National Centre for Ocean Information Services (INCOIS) has carried out coastal vulnerability assessment for entire Indian coast at states level.

Coastal Vulnerability Index (CVI)

  • Under the CVI, INCOIS has brought out an Atlas comprising 156 maps on 1:1,00,000 scales to prepare a CVI.
  • These maps determine the coastal risks due to future sea-level rise based on the physical and geological parameters for the Indian coast.
  • The CVI uses the relative risk that physical changes will occur as sea-level rises are quantified based on parameters like:
    • Tidal range
    • Wave height
    • Coastal slope
    • Coastal elevation
    • Shoreline change rate
    • Geomorphology
    • Historical rate of relative sea-level change
  • A coastal Multi-Hazard Vulnerability Mapping (MHVM) was also carried out using above mentioned parameters. These parameters were synthesized to derive the composite hazard zones that can be inundated along the coastal low-lying areas due to extreme flooding events.
  • This MHVM mapping was carried for the entire mainland of India on a 1:25000 scale.
  • These maps depict the coastal low-lying areas exposed to the coastal inundation.
  • India has a coastline of 7516.6 Km i.e. 6100 km of mainland coastline plus coastline of 1197 Indian islands touching 13 States and Union Territories (UTs). Coastal vulnerability assessments can be useful information for coastal disaster management and building resilient coastal communities.