AN investigation on environmental impact of Polrud Dam and providing strategies reducing environmental impacts

Polrud dam is constructed on PolrudRiver, at 17 kilometers southwest of Kalachay city in EastGilanProvince. The capacity of the dam is 30 million cubic meters. The main goal of this study is to investigate adverse effects of the constructed dam. Also, a mitigation plan was recommended. To achive this goal, some information was gathered about physical, biological, socio – economic characteristics of the up stream basin of the dam. In this paper, list of activities performed during the construction of the dam, was introduced in details. The combination matrix method (LEOPOLD & ICOLD) was applied to quantify the effects of such activities on the environment. Results of aggregate values for matrix,showed that 47 percent of values were negative and others were positive. Negative impacts (permanent or temperate) were not more than 50 percent of total. Hence construction and operation of polrud dam in the viewpoint of environmental management is justifiable.
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