Socio-environmental consequences resulting from human privacy interference and bed rivers in Gilan province

The Gilan province has several rivers which the most of them are full of water and usually over flow in spring. Raining over the altitudes which covered snow، with high intensity showers result overflow of rivers and cause many damages like flooded passages، farms and residential areas in inferior and middle parts of catchments. Of course، the method of taking advantage of the area near river، as traditional way which is done in province، especially in inferior parts، cause various problems in the province of Gilan. So that human enforce make overflow of rivers and it''s side effects in recent years. The inappropriate taking advantage of river recourses as irrelative utilized water، Tourism aspects، fishier activities، around the river and water diversion. These are examples of inappropriate management which damages rivers of province. On the other hand the ascending needs for water in order to agricultural activities and increasing tourism aspects in The Gilan province cause numerous that human enforces make to bed of river. So that irrelative harvest of sand from bed river، to empty trash، building garbage urban، rural sewage in the river and grazing more than the capacity of pastures and forest، and damaging the forest covering result ascending the discharge capacity of surface runoff and rivers and occurrence flood of rivers. One of the following events is criminal and financial damages and increased frequency of flood. While the environmental damages caused by floods and overflow of rivers are also significant and reaches to tens of billions. Therefore the results of the review and study in the range of 13796 km2 area. Province of Gilan consisted of the following 3 main catchments of Talesh، Anzali، Sefid-Rood and watershed in east of Gilan has been carried out، show that the damages caused by floods in the current studied watershed including death of 39 persons and loss amounts to 125. 9 billion Rials in years of 1971 to 2001. So that these damages occur in 53 events flood at the sometime furthermore showers، floods، have been led to negative consequences in urban and rural environments and bio-economic level in farm and farm crops and infrastructure including communicational networks. Therefore، in order to solve this problem consideration to the management strategy in observation to substrate of river and decreasing the non principles that human enforce make، is necessity.