Journal of Wetland Ecobiology
Volume 16, Issue 2 (Summer 2024)
2024, 16(2): 28-34 |
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Gholami M, Merrikh A, Razavi M, Mobarhan fard A. Environmental Assessment of the Talar River in Savadkuh, Mazandaran Province, Using the IRWQI Water Quality Index. Wetland Ecobiology 2024; 16 (2) : 3
URL: http://jweb.ahvaz.iau.ir/article-1-1105-en.html
URL: http://jweb.ahvaz.iau.ir/article-1-1105-en.html
Islamic Azad University, Central Tehran Branch
Abstract: (306 Views)
Determining the quality and conducting environmental assessments of surface waters is of high importance for various uses. Identifying polluted points and pollutants in each region enables optimal management of water resources. The objective of this research was the environmental assessment of the Talar River in Savadkuh, from the Veresk area to the end of North Savadkuh County. In this descriptive-analytical study, over four months (September, October, November, December 2023), 28 water samples were collected from 7 sampling stations. Fourteen physicochemical and microbial parameters including DO, BOD, COD, NH₄, NO₃, PO₄, pH, EC, temperature, TDS, turbidity, total hardness, fecal coliform, and total coliform were measured at each station. The data were analyzed using the Iranian Surface Water Quality Index (IRWQIsc) and Excel software, and the station locations were mapped using GIS software. Based on the quality index calculations, the river's status at the upstream station (Veresk) was in the "moderate" category (with a score of 45.8), while at other midstream and downstream stations (Doab, Polsefid, Azadmehr, Shirgah, Chali, and Mangal) it was in the "relatively poor" category (with scores between 39.2 and 43.6). The overall average water quality index for the Talar River was 41.78, assessed as "relatively poor." Parameter analysis revealed that high levels of turbidity (resulting from sand and gravel mining activities) and microbial pollution (resulting from the discharge of domestic and rural wastewater) were the most important factors reducing the water quality of this river. The results of this research indicate the severe impact of human activities on the gradual degradation of water quality along the river's course and reveal the necessity of adopting immediate management measures including controlling mining activities, organizing wastewater disposal, and continuous monitoring.
Article number: 3
Keywords: Water Quality Index, Talar River, Environmental Assessment, Water Pollution, IRWQIsc Index.
Type of Study: Research |
Subject:
Special
Received: 2025/10/10 | Accepted: 2026/01/4 | Published: 2026/01/4
Received: 2025/10/10 | Accepted: 2026/01/4 | Published: 2026/01/4
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