Abstract
The aim of this paper is to design a Simulink model which can estimate the effect of rainwaters in the contaminated soil by heavy metal. The paper suggests design of Simulink model to estimate concentration of heavy metals in soil depending on the given data. Then compared the results with laboratory inspecting to estimate the accuracy of suggested technique. Where the sample data selected from different zone in Baghdad before and after the rain to determine its effect. The practical results show the efficiency of suggested technique.