Abstract
Flooding is a global phenomenon that causes casualties and property loss on every inhabited continent. It is probably the most devastating, widespread and frequent natural disaster for human societies. To determine the flood in advance and to prevent the damages due to overflow of adjoining river banks, the Flood Inundation Modeling and Flood Inundation Mapping plays an important role in the field of Hydrology. Hence, in the present study an attempt has been made to analyze the flood inundation boundary by unsteady flow analysis for the downstream of T.Narsipura, discharge gauging station of upper Cauvery basin, Karnataka by using an integrated approach of HEC-RAS and ArcGIS techniques. Unsteady flow analysis is carried out by using HEC-RAS to detect the change in flooding pattern for 21 years and the results are mapped with ArcGIS. These flood inundation studies and the maps created will help the decision makers to assess the risk and to take precautions at the earliest.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Chow. (2009). Open channel hydraulics (pp. 675). New York: McGraw-HILL Book Company.
Horritt, & Bates. (2002). Evaluation of 1D and 2D numerical models for predicting river flood inundation. Journal of Hydrology, 268, 87–99.
Merwade, C., & Coonrod. (2008). GIS techniques for creating river terrain models for hydro dynamic modeling and flood inundation mapping. Environmental Modeling & Software, 23, 1300–1311.
Patel, C. G. (2016). Floodplain delineation using HEC-RAS model—A case study of Surat city. Modern Journal of Hydrology, 6, 34–42.
Teng, J., & Croke. (2017). Flood inundation modelling: A review of methods, recent advances and uncertainty analysis.
USACE. (2002). HEC-RAS River Analysis System, Hydraulic Reference Manual, U.S Army Corps of Engineers (USACE).
Younghun, D., & Munmo, & Lee. (2014). Simplified flood inundation mapping based on flood elevation-discharge rating curves using satellite images in gauged watersheds. Water, 6, 1280–1299.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Pallavi, H., Ravikumar, A.S. (2022). Analysis of Unsteady Flow Using HEC-RAS and GIS Techniques. In: Dikshit, A.K., Narasimhan, B., Kumar, B., Patel, A.K. (eds) Innovative Trends in Hydrological and Environmental Systems. Lecture Notes in Civil Engineering, vol 234. Springer, Singapore. https://doi.org/10.1007/978-981-19-0304-5_26
Download citation
DOI: https://doi.org/10.1007/978-981-19-0304-5_26
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-0303-8
Online ISBN: 978-981-19-0304-5
eBook Packages: EngineeringEngineering (R0)