Using community mapping for flood modelling
Published: 16 November 2017
As part of a Challenge Fund project, Deltares (a Dutch research institute) started to assess what can be done with this vast amount of OpenStreetMap (OSM) data to increase the understanding of flood risk.
Movement of water within the wards is particularly determined by detailed conveying elements such as drains, culverts and roads equipped with sidewalks, but also elements that block water such as elevated roads that do not have a significant facility for drainage, or conditions that lead to impeded drainage such as blockage by solid waste. A second block of information related to flood risks is the exposure of people, their livelihoods, assets as well as critical infrastructure to flooding. Especially during flooding, people depend on roads to move to safe places, churches, schools and central open spaces for relief, health centres for treatment, and police stations for security.
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