عنوان مقاله [English]
Temporal and spatial routing of water quality is necessary for planning water resource management. The aim of this study was to determine the quality of water resources of Chehelchay River using NSFWQI index. Sampling of water was done monthly during a rainy year from October 2015 to September 2016 from five stations in the outlet of the sub-basins. Dissolved oxygen, total solids, nitrate, phosphate, temperature, biochemical oxygen demand, pH, turbidity, fecal coliform parameters were tested based on standard methods. The NSFWQI index was calculated based on the data obtained from the sampling procedure. Then, the water quality was spatially classified into five classes (from very bad to excellent) using ArcGIS software. The effect of each sub-basin on rate of water quality index was determined and sub-basins were prioritized according to the percentage of effectiveness. The results showed that water quality was varied from bad to good in different months according to NSFWQI. In different seasons of the year, the river was placed in the middle class in terms of water quality. The reasons of being located in the middle class in this category might be due to factors such as decreasing river flow in the summer, increasing recreational and leisure activities in the river boundaries, agricultural wastes and unprincipled cultivation in sloping lands, drainage of rural sewage, wastewater from fish breeding pool, and high density of livestock trapped in the region. Therefore, the issue of water quality in this river, according to the results of the present research, should be considered by managers and planners of water resources management in the State.
Abtahi M., Golchinpour N., Yaghmaeian K., Rafiee M., Jahangiri-rad M., Keyani A. and Saeedi R. (2015). A modified drinking water quality index (DWQI) for assessing drinking source water quality in rural communities of Khuzestan Province, Iran. Ecol. Indicat., 53, 283-91 [In Persian].
Clescerl S.l., Greenberg A.E. and Eaton, A.D. (2005). Standard Methods for Examination of Water and Wastewater, 21st ed., American Water Works Association, DC.
Hajiannejad M. and Rahsapar A. (2010). Investigating the effect of wastewater and wastewater treatment on water quality parameters of Zayandehrood River. J. Res. Health Sys., 6, 821-828 [In Persian].
Hooshmand A., Delgandi M. and Sied Kaboli H. (2008). Zoning of water quality on Karoon river bases on WQI index with GIS. 2nd congress on environmental Eng. Proceeding. Tehran University.
House M. A. and Newsome D. H. (1989). Water quality indices for the management of surface water quality. Water Sci., 21, 11371148.
Javid A. H., Mirbagheri S. A. and Karimian A. (2014). Assessing Dez Dam reservoir water quality by application of WQI and TSI indices. Iran. J. Health Environ., 7(2), 133142 [In Persian].
Jonnalagadda S. B. and Mhere G. (2001). Water quality of the Odzi River in the eastern highlands of Zimbabwe. Water Res., 35, 2371-2376.
Katiraie G. H. (2001). Usage of GIS for flood zoning of rivers, Case study: Sefidrood River. Dissertation for Master of River Engineering. School Electrical and Power Industry of Tehran. 87 pages.
Liou S. M., Lo S. L. and Hu C. Y. (2003). Application of two-stage fuzzy set theory to river quality evaluation in Taiwan. Water Res., 37, 1406- 1416.
Muangthong S. (2015). Assessment of surface quality using multivariate statistical techniques: A case of the Nampong River basin, Thailand. J. Indust. Technol., 11(1), 25-73.
Nasir Ahmadi K., Yousefi Z. and Tarseli A. (2012). qualification zoning of the haraz river according to NSFWQI index. J. Mazandaran Univ. Med. Sci., 22(92), 64-71 [In Persian].
Nor-Azalina R., Mohd-hafiz Z. and Rosmina A. (2012). Salak River water quality identification and classification according to physicochemical characteristics. Proc. Eng. J., 50, 69-77.
Pote S. E., Singal S. K. and Srivastava D. K. (2012). Assessment of surface water quality of Godaraei River at Aurangabad. Asian J. Water, Environ. Pollut., 9(1), 117-122.
Rahmani A. (2006). Study on pollution reduction methods of the SiminaRood River. Environmental Directorate of Hamedan. Research report. [In Persian].
Razzaz M., Roshanfekri A. and Ghorbani F. (2007). Study of Maroon river water quality by using Water Quality Indexes (WQI). International conference on River Engineering, Ahwaz, 7, 197-204 [In Persian].
Sadeghi M., Bay A., Bay N., Soflaie N., Mehdinejad M. and Mallah M. (2015). The effect of agriculture drainage on water quality of the zaringol in Golestan province by the water quality index. Iran. J. Res. Environ. Health, 1(3), 177-185 [In Persian].
Sanchez E., Colmenarejo M., Vicente J., Garci A., Travioeso L. and Borja R. (2007). Use of the water quality index and dissolved oxygen deficit as simple indicators of watersheds pollution. Ecol. Indicat., 7, 315328.
Shokohi R., Hosseinzadeh A., Roshanaie Q. A., Alipour M. and Hosseinzadeh S. (2011). Assessment water quality of the lake Aydamghoush dam behind using of NSFWQI and change quality parameters. J. Health Environ., 4, 439-450 [In Persian].
Zandbergen P. A. and Hall K. I. (1988). Analysis of the British Columbia water quality index for watershed Managers: a case study of two small watersheds. Water Qual. Res, Canada, 33, 519-525.