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Floodplain Hazard Mapping and Implementation of Levee Structure: Determination of Reclaimable Land through Implementation of Levee Structure in Floodp
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| This study has focused in the study to perform the flood hazard analysis and study implementation of Levee structure conducted in a section of Bagmati River from Gokarna to Tilganga having watershed area about 66 SqKm. The study has uncovered different issues pertaining to flood risk analysis. This study covers the technical aspect of hazard, vulnerability risk analysis and additionally on the application of levee technique to determine the reclaimable area. Dimensional hydraulic modeling of HEC-RAS interfacing with HECGeoRAS method has been applied to undertake the study.Flood frequency analyses and peak discharge calculations were carried out through Gumbel Method. The application of levee structure would be great boon in the context of changing climatic condition. With limited land resource,which is decreasing at an alarming rate and increasing value of the property, application of this technique would well match for safeguarding property, human life and the physical environment along with biological resources. Thus, analysis of the possible reclaimable land through levee structure was conducted in the study. Upon calculation, 85% of land was found to be possibly reclaimed. |
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