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Flood protection by embankments in the Brahmani–Baitarani river basin, India: a risk-based approach

Author

Listed:
  • Marcel Marchand
  • Ruben Dahm
  • Joost Buurman
  • Subbiah Sethurathinam
  • Chris Sprengers

Abstract

Determining optimum flood protection levels is challenging in data-poor environments typical of developing countries. This study develops a risk-modelling approach to calculate current flood risks for a predominantly agricultural area in the Brahmani–Baitarani river basin in India. A combined hydrological–hydraulic model is developed together with a damage model to analyse the economic efficiency of different safety levels of embankments. The results show that more than 90% of the total flood risk would be controlled with embankments giving a protection level of once in 25 years. The study illustrates the feasibility of a relatively basic flood-risk analysis that can be applied at pre-feasibility level in a data-poor environment.

Suggested Citation

  • Marcel Marchand & Ruben Dahm & Joost Buurman & Subbiah Sethurathinam & Chris Sprengers, 2022. "Flood protection by embankments in the Brahmani–Baitarani river basin, India: a risk-based approach," International Journal of Water Resources Development, Taylor & Francis Journals, vol. 38(2), pages 242-261, March.
    • Handle: RePEc:taf:cijwxx:v:38:y:2022:i:2:p:242-261
    DOI: 10.1080/07900627.2021.1899899
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