Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX
In this study, the water quality of the Talar River was evaluated based on the National Sanitation Foundation Water Quality Index (NSFWQI), the Iranian Surface Water Quality Index (IRWQISC), and the Wilcox Diagram (WILCOX) at six different stations along the river during a hydrological year from Oct...
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Iranian Water Resources Association
2025-02-01
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| Series: | تحقیقات منابع آب ایران |
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| Online Access: | https://www.iwrr.ir/article_215613_632c812837ffe2a066960e05438b4d6b.pdf |
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| author | Ali Laki Ali Moridi Reza Khalili Sam Sadeghi |
| author_facet | Ali Laki Ali Moridi Reza Khalili Sam Sadeghi |
| author_sort | Ali Laki |
| collection | DOAJ |
| description | In this study, the water quality of the Talar River was evaluated based on the National Sanitation Foundation Water Quality Index (NSFWQI), the Iranian Surface Water Quality Index (IRWQISC), and the Wilcox Diagram (WILCOX) at six different stations along the river during a hydrological year from October 2022 to September 2023. Subsequently, statistical analyses, including a correlation matrix and a dendrogram diagram, were utilized to study the relationships among various water quality parameters.
In autumn, the poorest water quality based on the IRWQISC index was observed at the fourth station, with a value of 4.16, indicating very poor quality for the river. Additionally, the NSFWQI analysis revealed the worst water quality at the fifth station during summer, with a score of 23.63. However, at the first station in spring, the river's water quality slightly improved due to increased rainfall during this season.
According to the Wilcox Diagram, which depends solely on two parameters—Electrical Conductivity (EC) and Sodium Adsorption Ratio (SAR)—the worst result was observed at the sixth station in autumn. This result, classified as C3S2, corresponds to moderate quality for agricultural purposes.
As we move downstream, it is evident that increased agricultural and urban activities contribute to a decline in water quality across all indices. Moreover, reduced rainfall in certain months significantly exacerbates this deterioration in water quality. |
| format | Article |
| id | doaj-art-3eed28bf7e5c4f17af04058890e58d19 |
| institution | Kabale University |
| issn | 1735-2347 |
| language | fas |
| publishDate | 2025-02-01 |
| publisher | Iranian Water Resources Association |
| record_format | Article |
| series | تحقیقات منابع آب ایران |
| spelling | doaj-art-3eed28bf7e5c4f17af04058890e58d192025-08-20T03:50:01ZfasIranian Water Resources Associationتحقیقات منابع آب ایران1735-23472025-02-01211335310.22034/iwrr.2025.482028.2790215613Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOXAli Laki0Ali Moridi1Reza Khalili2Sam Sadeghi3Master's student, Faculty of Water and Environmental Civil Engineering, Shahid Beheshti University, Tehran.Associate Professor, Faculty of Civil Engineering, Water and Environment, Shahid Beheshti University, Tehran.PhD student, Faculty of Civil Engineering, Water and Environment, Shahid Beheshti University, Tehran.Master student, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.In this study, the water quality of the Talar River was evaluated based on the National Sanitation Foundation Water Quality Index (NSFWQI), the Iranian Surface Water Quality Index (IRWQISC), and the Wilcox Diagram (WILCOX) at six different stations along the river during a hydrological year from October 2022 to September 2023. Subsequently, statistical analyses, including a correlation matrix and a dendrogram diagram, were utilized to study the relationships among various water quality parameters. In autumn, the poorest water quality based on the IRWQISC index was observed at the fourth station, with a value of 4.16, indicating very poor quality for the river. Additionally, the NSFWQI analysis revealed the worst water quality at the fifth station during summer, with a score of 23.63. However, at the first station in spring, the river's water quality slightly improved due to increased rainfall during this season. According to the Wilcox Diagram, which depends solely on two parameters—Electrical Conductivity (EC) and Sodium Adsorption Ratio (SAR)—the worst result was observed at the sixth station in autumn. This result, classified as C3S2, corresponds to moderate quality for agricultural purposes. As we move downstream, it is evident that increased agricultural and urban activities contribute to a decline in water quality across all indices. Moreover, reduced rainfall in certain months significantly exacerbates this deterioration in water quality.https://www.iwrr.ir/article_215613_632c812837ffe2a066960e05438b4d6b.pdfwater qualitytalar rivernsfwqi indexirwqisc indexwilcox index |
| spellingShingle | Ali Laki Ali Moridi Reza Khalili Sam Sadeghi Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX تحقیقات منابع آب ایران water quality talar river nsfwqi index irwqisc index wilcox index |
| title | Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX |
| title_full | Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX |
| title_fullStr | Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX |
| title_full_unstemmed | Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX |
| title_short | Temporal Water Quality Patterns in the Talar River: A Multi-Index Approach Using IR-WQISC, NSFWQI, and WILCOX |
| title_sort | temporal water quality patterns in the talar river a multi index approach using ir wqisc nsfwqi and wilcox |
| topic | water quality talar river nsfwqi index irwqisc index wilcox index |
| url | https://www.iwrr.ir/article_215613_632c812837ffe2a066960e05438b4d6b.pdf |
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