This study aims to evaluate and predict stability level of underground water in KHOSVIEH plain located in ZARRIN DASHT town using economic models. In this regard, the approach of the box-Jenkins was used in choosing economic model. After applying remaining tests and various calculations, it was shown that the best model of estimating objective function is time series model of moving stacked correlated average (ARIMA). The data required for this research were collected monthly from data bases of east regional water organization of FARS province \"between\" (1995-2006). The results showed that the best estimating for modeling and predicting the future values of water stability level is ARIMA (4, 1, and 4). The recent year’s values and estimated values of underground water level to 1400 are indicative of an increasing trend. So it’s suggested due to dry climate and erratic rainfall in the region, water use patterns in order to increase the amount of water in wells and lower the water stability level, in order to achieve this goal, traditional methods of watering in agricultural part must be revised. In other words, the pattern of water usage in this region must be changed

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