Effect of reservoir zones and hedging factor dynamism on reservoir adaptive capacity for climate change impacts

Adebayo J. Adeloye*, Bankaru-Swamy Soundharajan

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)
29 Downloads (Pure)


When based on the zones of available water in storage, hedging has traditionally used a single hedged zone and a constant rationing ratio for constraining supply during droughts. Given the usual seasonality of reservoir inflows, it is also possible that hedging could feature multiple hedged zones and temporally varying rationing ratios but very few studies addressing this have been reported especially in relation to adaptation to projected climate change. This study developed and tested Genetic Algorithms (GA) optimised zone-based operating policies of various configurations using data for the Pong reservoir, Himachal Pradesh, India. The results show that hedging does lessen vulnerability, which dropped from ≥60% without hedging to below 25% with the single stage hedging. More complex hedging policies, e.g. two stage and/or temporally varying rationing ratios only produced marginal improvements in performance. All this shows that water hedging policies do not have to be overly complex to effectively offset reservoir vulnerability caused by water shortage resulting from e.g. projected climate change.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalProceedings of the International Association of Hydrological Sciences
Publication statusPublished - 5 Jun 2018
Event8th International Symposium on Integrated Water Resources Management 2018 - Beijing, China
Duration: 13 Jun 201815 Jun 2018

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)


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