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Mapping population exposure to flood hazards: Step-by- step guide on the use QGIS

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Document

UN Partner

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United Nations Economic and Social Commission for Asia and the Pacific ( UN Partner )

Statistics Community

Mapping flood hazard aspect ratio 1920 1080

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Languages: English

This guide shows you step-by-step how to generate a map which shows the percentage of the population exposed to flood hazard.

SDG: 2030 Agenda; SDG13: Climate action; SDG17: Partnerships for the goals; SDG 17: Capacity-building

Subject: Mapping exposure to flood hazard

Statistics: Environment and multi-domain statistics; Methodology and statistical processes; Data processing and analysis

Keywords: disaster preparedness; GIS; mapping

For illustrative purposes we have focused on one type of flood hazard, riverine floods and one geographical area, Lao People’s Democratic Republic. The maps generated are shown together with explanation of the applied methodology. The guide explains how to generate similar maps for hazard types and geographical areas of your own choosing.

The guide uses Copernicus Global Land Cover data, Census data and Administrative Boundaries data and Flood Hazard data to generate the maps shown. The guide explains the use of open-source software, namely Quantum Geographic Information System (QGIS) to construct the maps.