Frequency analysis of low flows in intermittent and non-intermittent rivers from hydrological basins in Turkey

Ebru Eris*, Hafzullah Aksoy, Bihrat Onoz, Mahmut Cetin, Mehmet Ishak Yuce, Bulent Selek, Hakan Aksu, Halil Ibrahim Burgan, Musa Esit, Isilsu Yildirim, Ece Unsal Karakus

*Bu çalışma için yazışmadan sorumlu yazar

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35 Atıf (Scopus)

Özet

This study attempts to find out the best-fit probability distribution function to low flows using the up-to-date data of intermittent and non-intermittent rivers in four hydrological basins from different regions in Turkey. Frequency analysis of D ¼ 1-, 7-, 14-, 30-, 90- and 273-day low flows calculated from the daily flow time series of each stream gauge was performed. Weibull (W2), Gamma (G2), Generalized Extreme Value (GEV) and Log-Normal (LN2) are selected among the 2-parameter probability distribution functions together with the Weibull (W3), Gamma (G3) and Log-Normal (LN3) from the 3-parameter probability distribution function family. Selected probability distribution functions are checked for their suitability to fit each D-day low flow sequence. LN3 mostly conforms to low flows by being the best-fit among the selected probability distribution functions in three out of four hydrological basins while W3 fits low flows in one basin. With the use of the best-fit probability distribution function, the low flow-duration-frequency curves are determined, which have the ability to provide the end-users with any D-day low flow discharge of any given return period.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)30-39
Sayfa sayısı10
DergiWater Science and Technology: Water Supply
Hacim19
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - Şub 2019

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© 2019 IWA Publishing. All rights reserved.

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