Flood risk assessment and its application in the eastern part of Dhaka City, Bangladesh

作者: A.K. Gain , M.M. Hoque

DOI: 10.1111/JFR3.12003

关键词: HydrologyWater resource managementFlood mythRisk analysis (business)Return period100-year floodEnvironmental scienceVulnerabilityFlooding (psychology)GeoprocessingFlood risk assessmentGeography, Planning and DevelopmentEnvironmental engineeringSafety, Risk, Reliability and QualityWater Science and Technology

摘要: Traditional flood design methods are increasingly supplemented by risk-oriented based on comprehensive risk analysis. This analysis requires: (1) the estimation of hazard that represents intensity a flood, (2) vulnerability, e.g. percentage damage to total property as function depth and duration, (3) consequences flooding, loss life property. In this study, maps Balu-Tongikhal River system within eastern part Dhaka City prepared using geoprocessing tools hydrodynamic model. The raster-based vulnerability expected several return period floods then produced. comparison with classical inundation maps, these generate more information about flooding events. Consequently, produced useful in evaluating policy alternatives minimising because study area.

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