Frequency curves of high and low flows in intermittent river basins for hydrological analysis and hydraulic design

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dc.authoridSarigil, Gokhan/0000-0002-7461-5169
dc.authoridAksoy, Hafzullah/0000-0001-5807-5660
dc.authoridEris, Ebru/0000-0003-0601-7666
dc.contributor.authorSarigil, Gokhan
dc.contributor.authorAksoy, Hafzullah
dc.contributor.authorCavus, Yonca
dc.contributor.authorEris, Ebru
dc.date.accessioned2025-03-09T10:49:06Z
dc.date.available2025-03-09T10:49:06Z
dc.date.issued2024
dc.departmentİstanbul Beykent Üniversitesi
dc.description.abstractUpper and lower percentiles of Flow Duration Curves (FDCs) of daily streamflow data were investigated to develop frequency curves. Upper percentiles with exceedance probability of 1, 5 and 10% (Q1, Q5, Q10) were used for high flows, and lower percentiles with non-exceedance probability of 10, 5 and 1% (Q90, Q95, Q99) for low flows. Median value (Q50) was covered to represent the average conditions of streamflow. A mixed frequency analysis based on the total probability theorem taking zero values into account was applied for the lower percentiles of FDC. Case studies were performed for three intermittent Streamflow Gauging Stations (SGSs) from Kucuk Menderes River Basin in western Turkey. An overall assessment of results shows that the best-fit probability distribution function does not change from one SGS to another considerably for low flows while each SGS has its own probability distribution function for high flows. Upper and lower percentiles, and median value were calculated at various return periods by using the identified probability distribution functions. The calculated values were plotted in the form of frequency curves of high flow percentiles and low flow percentiles. The frequency curves have a practically significant potential use in hydrological analysis, water resources management and hydraulic design under high and low flow conditions. They are yet open to further development for regionalization and their applicability can be extended to ungauged sites in river basins.
dc.description.sponsorshipEge University
dc.description.sponsorshipNo Statement Available
dc.identifier.doi10.1007/s00477-024-02732-0
dc.identifier.endpage3092
dc.identifier.issn1436-3240
dc.identifier.issn1436-3259
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85192690956
dc.identifier.scopusqualityQ1
dc.identifier.startpage3079
dc.identifier.urihttps://doi.org/10.1007/s00477-024-02732-0
dc.identifier.urihttps://hdl.handle.net/20.500.12662/4727
dc.identifier.volume38
dc.identifier.wosWOS:001220406900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofStochastic Environmental Research and Risk Assessment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250310
dc.subjectFrequency curve
dc.subjectHigh flow
dc.subjectIntermittency
dc.subjectLow flow
dc.subjectPercentile
dc.subjectTotal probability theorem
dc.titleFrequency curves of high and low flows in intermittent river basins for hydrological analysis and hydraulic design
dc.typeArticle

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