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:: Volume 22, Issue 4 (12-2020) ::
J Gorgan Univ Med Sci 2020, 22(4): 123-131 Back to browse issues page
Evaluation of water quality of Chehel-chai River in northern Iran based on NSFWQI, IRWQIsc and CWQI
Mohammad Gholizadeh 1, Mohammad Zibaei2
1- Assistant Professor, Department of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran. , gholizade_mohammad@yahoo.com
2- B.Sc in Fisheries, Faculty of Sciences, Gonbad Kavous University, Gonbad Kavous, Iran.
Abstract:   (2163 Views)
Background and Objective: The increasing development of agricultural and aquaculture activities along the rivers has reduced the quality of running water. The aim of this study was to evaluate Chehel-chai River water quality with national sanitation foundation water quality index (NSFWQI), Iran water quality index for surface water (IRWQISC), Canadian water quality index (CWQI).
Methods: This descriptive-analytical study, was performed on all of 7 sampling stations based on standard factors such as availability, land use type, geology and dispersion along the river, 12 water quality parameters including dissolved oxygen, fecal coliform, pH, biochemical oxygen demand (BOD), chemical oxygen demand (COD), temperature, organic phosphate, nitrate, ammonium, turbidity, total soluble solids and electrical conductivity and 5 cations (sodium, calcium and magnesium) and anion (chloride and sulfate) along the river for summer and autumn seasons 2018 (42 sample) with the standard method was measured.
Results: The amount of phosphate and turbidity increased from station 2 to downstream due to the existence of fish ponds and agricultural drainage. BOD, COD and fecal coliform values at station 6 have increased significantly with due to urban effluent output. River pollution in the summer has increased due to reduction of river flow and after station 3 (promenade) to the downstream, which is due to the entry of agricultural fertilizers and urban wastewater discharge. According to the average of IRWQISC and NSFWQI, the water quality of Chehel-chai River in the sampling station in the area of Minoodasht city (station 6) is in bad class. The CWQI index showed that the water of the Chehel-chai River is suitable for drinking and aquaculture at the border of the class, for agriculture in the bad class, and in terms of recreation and livestock use in the higher class.
Conclusion: The mean values of the above indices indicate high pollution quality class, and since this river is used for water supply for agricultural and aquaculture, management strategies are necessary.
Keywords: Water Quality [MeSH], NSFWQI , IRWQISC , CWQI , River [MeSH]
Article ID: Vol22-63
Full-Text [PDF 391 kb]   (11252 Downloads)    
Type of Study: Original Articles | Subject: Environmental Health
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Gholizadeh M, Zibaei M. Evaluation of water quality of Chehel-chai River in northern Iran based on NSFWQI, IRWQIsc and CWQI. J Gorgan Univ Med Sci 2020; 22 (4) :123-131
URL: http://goums.ac.ir/journal/article-1-3789-en.html


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Volume 22, Issue 4 (12-2020) Back to browse issues page
مجله دانشگاه علوم پزشکی گرگان Journal of Gorgan University of Medical Sciences
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