Integrated river quality management by CCME WQI as an effective tool to characterize surface water source pollution (Case study: Karun River, Iran)

Document Type : Original Research Paper


1 Department of Environment Science, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University of Tehran, Iran

2 Department of Environment Science, Gorgan University of Agricultural and Natural Resource, Iran

3 Department of Fishery Science, Gilan University, Iran

4 Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran



Evaluation of surface water quality is a complex process undertaking
multiple parameters. Converting great amount of parameters into a simpler expression
and enabling easy interpretation of data are the main purposes of water quality indices.
The main aim of this study is to plan effective water resources management system for
Karun River by combination of CCMEWQI and Geographic Information System (GIS).
The investigation was carried out to set a management plan through exploratory and
spatial analysis of physicochemical water parameters of collected samples from 10
stations over one year period. Since all indices were obtained from index, river zoning
was conducted by GIS. Moreover, trace metals concentrations (As, Cr, Cd, Fe, Zn, Mn,
and Al) ranged in safer limit. The highest values of F1 belonged to aquatic life and the
lowest ones belonged to irrigation. Aquatic life and drinking uses received the maximum
values of F2. The lowest values were devoted to livestock and then recreation uses. It was
inferred from index that the quality of the Karun River is principally impacted by high
turbidity, TDS, NO3, SO4, and PO4 due to high suspended sediment loads. The main
cause is incremental agricultural, industrial, and residential effluents. Amongst stations,
station one only received the priority for drinking water supply and recreation.


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