Techniques for flood hazard zonation and vulnerability ... - NDMA

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3/17/2010 Tools/Techniques Used for Flood Hazard Zonation and Vulnerability Mapping • Flood Plain Maps: For main rivers, Flood Plain Maps have been prepared based on various categories of floods (Medium/High/Very High/Exceptionally High etc.) based on which, owing to a particular flood category, inundation levels are assessed for the existing and the new planned infrastructure activity/flood control facility/cropping activity etc. (Used at National, Provincial and District levels). INDUS RIVER SYSTEM – Flood Risk Map 6
3/17/2010 INDUS RIVER SYSTEM - Flood Risk Map Tools/Techniques Used for Flood Hazard Zonation and Vulnerability Mapping • Bathymetric Surveys: Every year during the monsoon season, river discharges increase on one hand and at the same time lot of debris, sediment and silt is brought which results in accretion/degradation of river profile. Bathymetric surveys carried out across the flow of river help in understanding changed river cross-sectionalsectional profile and hence in better forecasting of flows. (Used at National, Provincial and District levels). • Flood Forecasting Computer Model: Anticipated flood events are assessed through FEWS (Flood Forecasting Early Warning System) Computer Model which helps not only in instant flood forecasting but also in future estimate of floods both at the provincial as well as at the district level. (Used at National , Provincial and District levels). 7
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Techniques for flood hazard zonation and vulnerability ... - NDMA

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