Abstract
Water resource management is always very important. This is due to climate change, especially in hot and dry areas becomes more important. Optimal planning in the optimal management of water resources (especially reservoirs of dams) is an important pillar in this field. In general, planning, predicting and identifying trends play an important role in making timely and correct decisions, controlling conditions and managing crises. has it. Therefore, predicting the inflow to the dam reservoir is vital for planning and ultimately optimal management of water resources (in particular reservoirs and dams). Analyzing the statistics and valid information of the flow of the river entering the dam reservoir and choosing a suitable model can be done The nose allows the flow. For this purpose, an ARIMA model was developed. From the ARIMA model in order to model the linear component of the data was used The results showed that the ARIMA model has a relatively acceptable ability in simulating the input flow.