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    Flood Frequency Analysis of Narmada River Basin in India under Nonstationary Condition

    Source: Journal of Hydrologic Engineering:;2019:;Volume ( 024 ):;issue: 008
    Author:
    Litan Kumar Ray
    ,
    Narendra Kumar Goel
    DOI: 10.1061/(ASCE)HE.1943-5584.0001808
    Publisher: American Society of Civil Engineers
    Abstract: The influence of recent climate variability coupled with the intensified human-induced changes has led hydrologists to modify the flood frequency analysis (FFA) considering nonstationary behavior of time series. Presently, a case study has been undertaken to demonstrate a methodology for FFA considering nonstationarity of annual maximum flood series of six gauging sites from Narmada River Basin. Two different approaches, namely time-varying nonstationarity and nonstationarity due to physical covariates, have been applied in the present case. The influence of climate indices and the effect of reservoir constructions on the Narmada River Basin have been included as external covariates. The results indicated that the construction of reservoirs has played a major role for the changing behavior of flood series of Narmada River Basin from stationary to nonstationary. Due to nonstationarity, the return level flood value increased substantially with time and may create problems for the old structures, which were designed using traditional FFA assumptions of stationarity. The present case study can be used as an alternative to the stationary FFA for any basins worldwide, which will provide more options to the designers and managers.
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      Flood Frequency Analysis of Narmada River Basin in India under Nonstationary Condition

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4260520
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    contributor authorLitan Kumar Ray
    contributor authorNarendra Kumar Goel
    date accessioned2019-09-18T10:42:24Z
    date available2019-09-18T10:42:24Z
    date issued2019
    identifier other%28ASCE%29HE.1943-5584.0001808.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4260520
    description abstractThe influence of recent climate variability coupled with the intensified human-induced changes has led hydrologists to modify the flood frequency analysis (FFA) considering nonstationary behavior of time series. Presently, a case study has been undertaken to demonstrate a methodology for FFA considering nonstationarity of annual maximum flood series of six gauging sites from Narmada River Basin. Two different approaches, namely time-varying nonstationarity and nonstationarity due to physical covariates, have been applied in the present case. The influence of climate indices and the effect of reservoir constructions on the Narmada River Basin have been included as external covariates. The results indicated that the construction of reservoirs has played a major role for the changing behavior of flood series of Narmada River Basin from stationary to nonstationary. Due to nonstationarity, the return level flood value increased substantially with time and may create problems for the old structures, which were designed using traditional FFA assumptions of stationarity. The present case study can be used as an alternative to the stationary FFA for any basins worldwide, which will provide more options to the designers and managers.
    publisherAmerican Society of Civil Engineers
    titleFlood Frequency Analysis of Narmada River Basin in India under Nonstationary Condition
    typeJournal Paper
    journal volume24
    journal issue8
    journal titleJournal of Hydrologic Engineering
    identifier doi10.1061/(ASCE)HE.1943-5584.0001808
    page05019018
    treeJournal of Hydrologic Engineering:;2019:;Volume ( 024 ):;issue: 008
    contenttypeFulltext
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