The recognition of changes hydroclimatological factors in mountainous area of East Gilan

Laheejan – Chaboksar mountainous areas are located in Eest of Gilan and its hydroclimatological factors obtained with analyzing of hydrological and climatological data for this research. The aim of this paper is recognition and determination of hydrological cycle factors such as: precipitation, Run off, Infiltration, Evapotranspiration during in 1998-2006. The research method of this research has used from descriptive analytical, Correlation and regression method. The result of this paper has shown that this area with increase of elevation, precipitation is lower than evaporation and have deficit water and hydrological cycle factors. These pharameter in during times has been for runoff (24 percent), infiltration (18%), evapotranspiration (51/9%) interception (61/1%) and must be addition, this area have sustainable condition for this phenomena, that it is drought.