Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India

Dam safety risks towards human communities have increased substantially in recent decades. They are the result of dam safety issues leading to failure, which have been aggravated by large losses in downstream areas due to increased inhabitants and settlement. It is critical for carrying out dam brea...

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Main Authors: Pathan A.I., Mohapatra P.K., Shaikh A.A., Agnihotri P.G., Sidek L.M., Ibrahim M.
Other Authors: 57209510674
Format: Book chapter
Published: Springer Science and Business Media Deutschland GmbH 2024
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spelling my.uniten.dspace-343822024-10-14T11:19:24Z Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India Pathan A.I. Mohapatra P.K. Shaikh A.A. Agnihotri P.G. Sidek L.M. Ibrahim M. 57209510674 36786533300 57404590400 56689815600 35070506500 57199802454 2D hydrodynamic modeling Dam break analysis Dam safety HEC-RAS Overtopping Dam safety risks towards human communities have increased substantially in recent decades. They are the result of dam safety issues leading to failure, which have been aggravated by large losses in downstream areas due to increased inhabitants and settlement. It is critical for carrying out dam break studies to conduct an impact assessment of the dam failure as well as provide information on potential flood inundation. A 2D HEC-RAS hydrodynamic model is developed in the present study to examine the flood wave caused by the speculative failure of Ukai Dam and examine outflow and possible inundation extents along downstream areas of Lower Tapi Basin. Topography and elevation data of the basin is obtained from a 30-m resolution SRTM digital elevation model. To conduct the dam break analysis, the inflow hydrograph during 2006 flood event is considered for upstream boundary condition and the downstream boundary condition is defined by normal depth. The outflow hydrograph due to the failure event has the ability to deluge the downstream region of the dam. The dam-break outflow hydrograph indicated the peak flow of 127,682 m3/s at the dam and 46,591 m3/s at the downstream end of the river. The proposed model proves to be an efficient tool for the stakeholders to investigate the flood depth, velocity, arrival time of flood at different spots, and inundation boundary for dam failure event in advance. Moreover, the study can provide valuable information for local authorities for planning effective dam safety measures to mitigate the effects of flood. � The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023. Final 2024-10-14T03:19:24Z 2024-10-14T03:19:24Z 2023 Book chapter 10.1007/978-981-99-3708-0_40 2-s2.0-85185955881 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85185955881&doi=10.1007%2f978-981-99-3708-0_40&partnerID=40&md5=a881acf027705a90f467a1ea15d61848 https://irepository.uniten.edu.my/handle/123456789/34382 Part F2265 589 606 Springer Science and Business Media Deutschland GmbH Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
topic 2D hydrodynamic modeling
Dam break analysis
Dam safety
HEC-RAS
Overtopping
spellingShingle 2D hydrodynamic modeling
Dam break analysis
Dam safety
HEC-RAS
Overtopping
Pathan A.I.
Mohapatra P.K.
Shaikh A.A.
Agnihotri P.G.
Sidek L.M.
Ibrahim M.
Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
description Dam safety risks towards human communities have increased substantially in recent decades. They are the result of dam safety issues leading to failure, which have been aggravated by large losses in downstream areas due to increased inhabitants and settlement. It is critical for carrying out dam break studies to conduct an impact assessment of the dam failure as well as provide information on potential flood inundation. A 2D HEC-RAS hydrodynamic model is developed in the present study to examine the flood wave caused by the speculative failure of Ukai Dam and examine outflow and possible inundation extents along downstream areas of Lower Tapi Basin. Topography and elevation data of the basin is obtained from a 30-m resolution SRTM digital elevation model. To conduct the dam break analysis, the inflow hydrograph during 2006 flood event is considered for upstream boundary condition and the downstream boundary condition is defined by normal depth. The outflow hydrograph due to the failure event has the ability to deluge the downstream region of the dam. The dam-break outflow hydrograph indicated the peak flow of 127,682 m3/s at the dam and 46,591 m3/s at the downstream end of the river. The proposed model proves to be an efficient tool for the stakeholders to investigate the flood depth, velocity, arrival time of flood at different spots, and inundation boundary for dam failure event in advance. Moreover, the study can provide valuable information for local authorities for planning effective dam safety measures to mitigate the effects of flood. � The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.
author2 57209510674
author_facet 57209510674
Pathan A.I.
Mohapatra P.K.
Shaikh A.A.
Agnihotri P.G.
Sidek L.M.
Ibrahim M.
format Book chapter
author Pathan A.I.
Mohapatra P.K.
Shaikh A.A.
Agnihotri P.G.
Sidek L.M.
Ibrahim M.
author_sort Pathan A.I.
title Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
title_short Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
title_full Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
title_fullStr Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
title_full_unstemmed Integrated Approach of Dam Break Analysis and Flood Inundation Mapping Using HEC-RAS�A Case Study of Ukai Dam, India
title_sort integrated approach of dam break analysis and flood inundation mapping using hec-ras�a case study of ukai dam, india
publisher Springer Science and Business Media Deutschland GmbH
publishDate 2024
_version_ 1814061053506486272