Analysis of the effects Pollutants at the source of (Between Gotvand dam to Ahwaz)

The Karun River is the largest and longest river in the country, due to the presence of multiple centers of industrial, agricultural and other major cities on the periphery, strategic location in the country and improve its quality monitoring is the national imperative. The main objective of this study is to investigate the role of anthropogenic factors on the quality of the Karoon River between the gotvand of dam to the bottom of the range of city Ahvaz. For this purpose, the sampling and testing for Karun river water downstream of the Gotvand at four stations in the period 1385 to 1395, and taking into account the location of emissions sources, obtained is qualitative data. , and then by using the Excel and Chemistry software, water quality indicators With figures and charts were reviewed and analyzed.Then by ARC GIS10.2 and Expert choice11 software is spatial analyzed the role of effective factors in the Karun River water quality and finally according to the model of FuzzAHP were assessed vulnerable areas. The results showed that, due to unfavorable Karun River, from the Junction GARGAR, And SHOTEYT to the next, surrounding villages and factories and industrial waste near the river, agricultural and Dez of river, that Sewage water the surrounding towns, especially the return of water the sugarcane of Agro-industrial units. The zoning also found that, 3863/42 square kilometers of area in terms of vulnerability to pollutants, very vulnerable, and 2647/34 square kilometers pollutants are much less vulnerable And the effects of various factors on water quality Karun River at the Junction of Dez River, GARGAR and SHOTEYT to downstream Ahwaz is very much, The need to pay special attention to the planners.