. Land use always is one of the major factors that human has affected their environmental through this factor. Remote sensing technology as a valuable solution for monitoring, detecting, identifying and natural resources and environment zoning, and especially is used for providing land use map of all over the world. These maps are basic requirements for an environmental management and monitoring and they are used at the planning and decision-making in the various sectors. changes Monitoring is an important process at the using of remote sensing Post- To determine the accuracy of the simulated maps and attaining the prediction validity of CA-Markov, it was used from two methods of calculating tables of agreement and disagreement and generating the prediction error method . Components of agreement and disagreement results show that the hybrid map agreement and prediction of 2013 is 0.81 and the disagreement is 0.19 and assessing the error prediction of the CA-Markov model for 2013 simulation at the three cla showed high accuracy between the reference map and the forecasted maps. In addition, the modeling process showed that by 1419 urban areas and main roads will reach about 85.247 and 22.117 hectares respectively. Due to the drying up of zayandehroud river and dehydration stresses created because of water shortage, a development about 1.37 in size of cultivation dependent on water at the western part of the region was observed so that amount of used water at the Western Region in the year 2003 and 2013 were 52.59 and 60.2 % respectively, and then this amount of water followed by the central region and lowest water use for irrigated farming was calculated at the eastern zone. an average expansion of 952 hectares per year and the lowest growth has been done between 203 to 2013 with an area of ??552 hectares per year. The results of Markov model is a matrix which shows the possibility of changing in every land cover and land use Keywords: Change Detection, Post-classification ,CA-Markov Model, Water Consumption, Landsat, Zayandehroud River.
