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Article

A Framework for Assessment of Flood Conditions Using Hydrological and Hydrodynamic Modeling Approach

1
Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
2
Haskoning DHV Consulting Pvt Ltd., Green Boulevard, Sector 62, Noida 201301, India
*
Author to whom correspondence should be addressed.
Water 2023, 15(7), 1371; https://doi.org/10.3390/w15071371
Submission received: 12 February 2023 / Revised: 12 March 2023 / Accepted: 21 March 2023 / Published: 3 April 2023

Abstract

River flooding has been triggering significant damage to lives and infrastructure and is a major worry all around the globe. To lessen these losses, proper planning and management methods need to be deployed. The purpose of this research is to fill a knowledge gap on the effects of reservoirs operation of the Idukki and Idamalyar to Periyar River Basin massive flooding. The proposed methodology is implemented on the Periyar River Basin located in Kerala, India, where severe flooding occurred during monsoon season in the year 2018. In this study, modelling technique has been used in two-step: (1) development of 1D physically based, distributed-parameter model (Soil and Water Assessment Tool, SWAT) to compute the stream flow and estimate the stream discharge at different outlet points; and (2) hybrid model is developed by linking SWAT with a well-known 2D hydrodynamic model (International River Interface Cooperative, iRIC) to display flood scenarios and to identify the flood-prone areas. The ArcSWAT user interface employed in the ArcGIS software was utilized to delineate the river basin. The SWAT model was calibrated and validated on daily and monthly basis at two gauge discharge stations, i.e., Neeleeswaram and Kalady. The statistical coefficients result obtained from SWAT model was in good agreement with the measured values for calibration and validation. The hybrid model simulation results compared with observed flood depth and remote sensing data demonstrated good capability of the model. Agreeable performances of computed results were observed in both flow fields and flood propagations. The result was compared with 2018 flood to check model accuracy and found to be satisfactory. The proposed framework can be utilized as an effective tool for efficient planning and management of natural disasters, such as flash floods.
Keywords: reservoir operation; hybrid model; two-dimensional; flash floods; Kerala flood reservoir operation; hybrid model; two-dimensional; flash floods; Kerala flood

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MDPI and ACS Style

Kumar, A.; Khosa, R.; Gosian, A.K. A Framework for Assessment of Flood Conditions Using Hydrological and Hydrodynamic Modeling Approach. Water 2023, 15, 1371. https://doi.org/10.3390/w15071371

AMA Style

Kumar A, Khosa R, Gosian AK. A Framework for Assessment of Flood Conditions Using Hydrological and Hydrodynamic Modeling Approach. Water. 2023; 15(7):1371. https://doi.org/10.3390/w15071371

Chicago/Turabian Style

Kumar, Anil, Rakesh Khosa, and Ashwin Kumar Gosian. 2023. "A Framework for Assessment of Flood Conditions Using Hydrological and Hydrodynamic Modeling Approach" Water 15, no. 7: 1371. https://doi.org/10.3390/w15071371

APA Style

Kumar, A., Khosa, R., & Gosian, A. K. (2023). A Framework for Assessment of Flood Conditions Using Hydrological and Hydrodynamic Modeling Approach. Water, 15(7), 1371. https://doi.org/10.3390/w15071371

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