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August 13, 2026Discover HazardsOpen Access

Flood susceptibility mapping in the Alappuzha Coastal Lowland, Kerala, India using GIS and multi-criteria decision analysis

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Overview

Randomized trial assesses flood susceptibility in Alappuzha, highlighting areas in need of intervention.

Key Points

  • The study aims to assess flood susceptibility in the Alappuzha District of Kerala using GIS and MCDA.
  • Developed a GIS-based MCDA framework integrating seven physical and environmental indicators.
  • Standardized indicators and created a composite Physical Vulnerability Index (PVI) using weighted linear combination.
  • Validated findings against observed flood extent from 2018 using Sentinel-1 SAR imagery.
  • Identified extensive high- and very-high-vulnerability zones in central and southern floodplains.
  • Achieved strong positive correlation with observed flood extent (Spearman ρ = 0.771).
  • Correctly identified the most and least flood-prone administrative units.

Cite This Study

A 2026 study studied this question.

synapsesocial.com/papers/6a7d76062b0e0cff3f63f0afhttps://doi.org/10.1007/s44475-026-00063-y
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1GIS and AHP Based Flood Susceptibility Mapping: A Case Study of Chalakudy River Basin, Kerala, India2025 · 5 citations
  2. 2GIS-MCDA assessment of landfill suitability in flood-prone coastal Alappuzha, Kerala2026
  3. 3GIS-MCDA Based Flood Hazard, Vulnerability, and Risk Assessment in the Lower Nilwala Floodplain, Sri Lanka2026
  4. 4Assessment of urban flood vulnerability using multi-criteria decision making and geospatial techniques in Chhatrapati Sambhajinagar, Maharashtra, India2026
  5. 5Mapping Flood Risk Vulnerability in the Vishwamitri River Basin using GIS and Remote Sensing Techniques2024