American Journal of Environment and Sustainable Development
Articles Information
American Journal of Environment and Sustainable Development, Vol.2, No.1, Mar. 2017, Pub. Date: Jun. 15, 2017
Water Quality Classification of the Karaj River Based on a Biological Index
Pages: 11-15 Views: 289 Downloads: 153
Authors
[01] Seyed Hadi Khatami, Division of Human Environment, Department of the Environment, Bureau of Environmental Impact Assessment, Tehran, Iran.
Abstract
The Karaj River is one of the most important rivers in Iran that provide potable water for Tehran City. The purpose of this study was to determine the water quality of the Karaj River based on the BMWP biotic index along the river from Gachsar village to the Amirkabir Dam. Four Phyla, 4 Classes, 4 Orders and 21 Families of macro-invertebrates were identified via the collected samples. There was a significant difference (P=0.03; n=4) between the BMPW indices recoreded during summer and autumn. This could be due to decreasing chanel size and differences in the discharge of pollutants between the two seasons. The result of cluster analysis showed three distinct groups of sites. The results of the biological survey showed that, although the quality of the water is influenced is pollution, the impact is not at the level that could seriously the use of the river water for potable consumption.
Keywords
Karaj River, Macro-Invertebrates, Biological Monitoring Working Party (BMWP) Index
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