Flood Risk Assessment in the Eastern Part of Dhaka City 🏙️, Bangladesh ​🇧🇩​

Flood Risk Assessment in the Eastern Part of Dhaka City 🏙️, Bangladesh ​🇧🇩​

👓 Animesh Kumar Gain,M. Mozzammel Hoque
Flood Risk Assessment in the Eastern Part of Dhaka City 🏙️, Bangladesh ​🇧🇩​

Flood Risk Assessment in the Eastern Part of Dhaka City 🏙️, Bangladesh ​🇧🇩​

✅ Dhaka City 🏙️ is surrounded by a network of rivers which makes 🛠️ the city 🏙️ vulnerable to flooding. The present 🎁 study provides an assessment of flood risk of eastern part of Dhaka City 🏙️. In the risk assessment task, following flood frequency analysis, flood inundation map 🗺️ is produced using geo-informatics tools 🔪. Then secondary depth-duration-damage function of various land use classes is used to produce raster-based vulnerability map 🗺️. Present 🎁 monetary value of various land use classes is collected through survey. Then expected damage map 🗺️ is generated as a mathematical product of vulnerability, property value and ➕ area in GIS environment. Finally expected damage value is classified into several classes where each class represents risk of the study area. In comparison to the classical 🏛️ inundation maps 🗺️, produced expected damage map 🗺️ generates more information ℹ️ about the flooding event because they bring into account the effects of flooding. These maps 🗺️ can 🥫 be useful to evaluate policy alternatives and ➕ the results of this study may be used for future flood damage mitigation plan in the study area.



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