Low Streamflow Analysis in Yeşilırmak Basin
Drought is generally defined as precipitation that drops significantly below recorded normal levels, negatively affecting soil and water resources in a region. Daily low flow indices are usually used for drought analysis. In this study, 7 and 30-day flow data consisting of daily data of flow observa...
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| Language: | English |
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Artvin Coruh University
2024-01-01
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| Series: | Doğal Afetler ve Çevre Dergisi |
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| Online Access: | http://dacd.artvin.edu.tr/tr/download/article-file/3285729 |
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| author | Sümeyye Özkan Turgay Partal |
| author_facet | Sümeyye Özkan Turgay Partal |
| author_sort | Sümeyye Özkan |
| collection | DOAJ |
| description | Drought is generally defined as precipitation that drops significantly below recorded normal levels, negatively affecting soil and water resources in a region. Daily low flow indices are usually used for drought analysis. In this study, 7 and 30-day flow data consisting of daily data of flow observation stations at Kale, Sütlüce, Gömeleönü, Artova and Alpudereköyü stations in Yeşilırmak basin, numbered E14A002, E14A014, E14A018, D14A062 and D14A106, were used. By using 31 years of data, flow rate continuous graphs were drawn first, and low flows were determined by reading Q90, Q95, and Q99 flow rates over these graphs. Then, recurrent flow rates of 2, 5, 10, 25, 50, and 100 years were estimated for 7-day and 30-day low flows. Normal, Lognormal, and Gumbel probability distributions, which are frequently examined in the literature at low flows, are used. The Kolmogorov-Smirnov test was performed to determine the optimal probability distribution. All distributions tested at the 90% and 95% statistical significance levels. Finally, the data were included in the Mann-Kendall and Spearman’s Rho trend analysis, and a significant decrease was observed at the Sütlüce and Artova stations for seven days of minimum flow.
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| format | Article |
| id | doaj-art-96959882729141b2ac554f9763876e63 |
| institution | Kabale University |
| issn | 2528-9640 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Artvin Coruh University |
| record_format | Article |
| series | Doğal Afetler ve Çevre Dergisi |
| spelling | doaj-art-96959882729141b2ac554f9763876e632025-02-03T10:00:51ZengArtvin Coruh UniversityDoğal Afetler ve Çevre Dergisi2528-96402024-01-01101778810.21324/dacd.1332448Low Streamflow Analysis in Yeşilırmak BasinSümeyye Özkan0https://orcid.org/0009-0006-9580-4248 Turgay Partal1https://orcid.org/0000-0002-3779-441XOndokuz Mayıs Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, 55270, SamsunOndokuz Mayıs Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, 55270, SamsunDrought is generally defined as precipitation that drops significantly below recorded normal levels, negatively affecting soil and water resources in a region. Daily low flow indices are usually used for drought analysis. In this study, 7 and 30-day flow data consisting of daily data of flow observation stations at Kale, Sütlüce, Gömeleönü, Artova and Alpudereköyü stations in Yeşilırmak basin, numbered E14A002, E14A014, E14A018, D14A062 and D14A106, were used. By using 31 years of data, flow rate continuous graphs were drawn first, and low flows were determined by reading Q90, Q95, and Q99 flow rates over these graphs. Then, recurrent flow rates of 2, 5, 10, 25, 50, and 100 years were estimated for 7-day and 30-day low flows. Normal, Lognormal, and Gumbel probability distributions, which are frequently examined in the literature at low flows, are used. The Kolmogorov-Smirnov test was performed to determine the optimal probability distribution. All distributions tested at the 90% and 95% statistical significance levels. Finally, the data were included in the Mann-Kendall and Spearman’s Rho trend analysis, and a significant decrease was observed at the Sütlüce and Artova stations for seven days of minimum flow. http://dacd.artvin.edu.tr/tr/download/article-file/3285729minimum flowprobability distributionstatistical data analysistrend analysisyeşilırmak basin |
| spellingShingle | Sümeyye Özkan Turgay Partal Low Streamflow Analysis in Yeşilırmak Basin Doğal Afetler ve Çevre Dergisi minimum flow probability distribution statistical data analysis trend analysis yeşilırmak basin |
| title | Low Streamflow Analysis in Yeşilırmak Basin |
| title_full | Low Streamflow Analysis in Yeşilırmak Basin |
| title_fullStr | Low Streamflow Analysis in Yeşilırmak Basin |
| title_full_unstemmed | Low Streamflow Analysis in Yeşilırmak Basin |
| title_short | Low Streamflow Analysis in Yeşilırmak Basin |
| title_sort | low streamflow analysis in yesilirmak basin |
| topic | minimum flow probability distribution statistical data analysis trend analysis yeşilırmak basin |
| url | http://dacd.artvin.edu.tr/tr/download/article-file/3285729 |
| work_keys_str_mv | AT sumeyyeozkan lowstreamflowanalysisinyesilırmakbasin AT turgaypartal lowstreamflowanalysisinyesilırmakbasin |