Effect of Drought on Pollution of LENJ Station of Zayandeh Rood River by Artificial Neural Network (ANN) and Effect of Salinity in This Region Agriculture

Iran is one of the arid countries in the world. In recent years due to universal climate change, precipitation reduction is happened. The Rivers are the most important domestic water resources and agricultural consumptions and are affected by the rainfalls reduction. Amount of salts in the rivers is increasing and threat life of organism. Therefore expectancy of amount of salts in the river considering to rainfalls reduction is necessary. Three years information of Lenj station is used at Zayandehrood River in this research. The monthly precipitation considered as the input and the river pollutants as output. Modeling with ANN was done and the result showed that discharge, EC & TDS with Root Mean Square Error 9.56 m3/s, 0.11 dS/m and 84.5 mg/lit respectively depend on rainfall in the case station directly.