Smart Flow Management: Mitigating Flood Risks through Effective Reservoir Operations

International Journal of Civil Engineering

© 2024 by SSRG - IJCE Journal

Volume 11 Issue 11

Year of Publication : 2024

Authors : Aswathy Ananthan, Y Stalin Jose

10.14445/23488352/IJCE-V11I11P112

How to Cite?

Aswathy Ananthan, Y Stalin Jose, "Smart Flow Management: Mitigating Flood Risks through Effective Reservoir Operations," SSRG International Journal of Civil Engineering, vol. 11,  no. 11, pp. 133-144, 2024. Crossref, https://doi.org/10.14445/23488352/IJCE-V11I11P112

Abstract:

Factors such as climate change, urbanization, poor infrastructure, and extreme weather events collectively increase the risk and severity of flooding. Efficient flood management is essential for mitigating risks caused by extreme weather incidents, especially in areas such as Idukki, Kerala, which has substantial monsoonal rainfall. The floods of 2018 and 2019 exposed the flaws of the Idukki multi-reservoir system, emphasizing the necessity for enhanced operational strategies. This study develops a comprehensive hydraulic model utilizing the MIKE 11 system to simulate the Idukki multi-reservoir’s response to flood scenarios, necessitating the optimization of water flow strategies to improve flood management. The modeling framework incorporates a one-dimensional hydrodynamic model, calibrated and validated using historical flood data from 2013, applying conservation of mass principles to compute inflows and outflows within the reservoir system. The findings demonstrate a robust correlation between simulated and actual water levels, as indicated by calibration metrics such as the correlation coefficients, ranging from 0.90 to 0.96, and Nash-Sutcliffe coefficients, ranging from 0.95 to 0.98. In the 2018 floods, reservoir operations were strategically controlled, leading to effective pre-discharge procedures and optimized outflows to keep levels within safe limits. The model exhibited its predictive abilities during peak inflow situations, validating that effective control measures can substantially reduce downstream flooding risks. The results underscore the significance of adaptive management strategies in reservoir operations, demonstrating the model’s effectiveness in real-time decision-making and enhancing the adaptability of flood management systems in susceptible areas like Idukki.

Keywords:

Flood management, Multi-reservoir, Hydrodynamic model, Mike 11, Reservoir Operations.

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