Explanation of how the analysis was carried out

This leaflet map visualizes the three components of the Flood Vulnerability Index (FVI) as well as the overall FVI across the Punjab region. Each component was derived through spatial overlay analysis using multiple geospatial datasets.

Flood-Prone Component (FPC)

Includes topographic and environmental indicators such as the Topographic Wetness Index (TWI), slope, elevation, and proximity to rivers. These layers were overlaid to identify areas naturally more prone to flooding.

Population Susceptible Component (PSC)

Considers population-related exposure factors including population density (disaggregated using dasymetric mapping), disabled, dependent and female population. These reflect the susceptibility of people to flood impacts.

Coping Capacity Component (CCC)

Assesses the ability of communities to respond and recover from floods using indicators like proximity to health facilities and literacy rate.

Flood Vulnerability Index (FVI)

The FVI was calculated using the formula: FVI = (FPC × PSC) / CCC.

All parameter layers were normalized and weighted using the Analytical Hierarchy Process (AHP). The analysis was conducted at a 30 m resolution for spatial detail. For broader comparison, results were aggregated to the tehsil level. This wb-map shows both the individual components and the aggregated FVI.

© 2025 Gernot Nikolaus
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Data sources include: Pakistan Bureau of Statistics, Sentinel-1 (via Google Earth Engine), FABDEM, OpenStreetMap, and other publicly available datasets. The author assumes no responsibility for any errors, omissions, or inaccuracies in the data, analysis, or cartographic representations presented in this atlas. The boundaries, names, and designations used in the maps do not imply any official endorsement or opinion concerning the legal status of any territory or area. This work is intended for academic and illustrative purposes only. While every effort has been made to ensure accuracy, the author cannot guarantee the completeness or reliability of the information presented. Use of this atlas and its contents is at the user's own risk.