Detection of runoff fluctuations with Drought Severity in Case of Increase in Efficiency and Reduction of Area under Cultivation and Artificial Recharge Plan

The present study aims at investigating the groundwater reservoirs in Khanmirza Plain under drought conditions in regard of the fluctuations in the rivers leading to Khanmirza Basin using WEAP Software. In order to actualize this goal, 2007 was chosen as the base year. Then, the scenarios were evaluated within a 30-year time span (2007-2037) using the WEAP model. The results of the first scenario showed that at least 50% is required for bringing about balance in the water level of Khanmirza Plain’s aquifer through implementing a plan for reducing the area under cultivation. The second scenario shows that not only the plain does not reach a stable balance state but also the water needs of the farmlands cannot be perfectly supplied by the implementation of pressurized irrigation and increasing the irrigation efficiency in the entire plain. Moreover, the third scenario is also reflective of the insufficiency of the implementation of an artificial recharge plan on Khanmirza Plain for reaching balance in the groundwater.