The severe discharge of aquifers is presenting many problems such as a drop in groundwater level and resulting in ground settlement and quality decline. To determine the groundwater system current conditions, the data of 15 piezometers and 11 sampling points concerning groundwater levels and quality were obtained from 1999 to 2014 in the study area of Jangal-Geysour, Razavi Khorasan Province, Iran. Concerning groundwater levels and quality data, two developed models of MODFLOW and MT3D were applied and calibrated from 1999 to 2010 and validated for the years 2010–2014. After substantial calibration and validation, four scenarios were presented. In scenario one (to balance the relative groundwater level drop condition in a five-year period) to achieve this target, the rate of withdrawals was decreased annually over 10%. To provide water demands of the public, the 10% reduction in the exploitation amount can be compensated by the groundwater sourced from the Jangal-Geysour groundwater resource field. In the second scenario, by applying the suggested addition withdrawals control method, the average moment withdrawal of 33.8 l/s was calculated for each well, and wells that exploit more than average should be controlled and the amount of overdraft subtracted from them. The third scenario studied wells used to supply the demand for agriculture, and tried to presented a suitable cropping pattern by considering allowed work hours to control and manage withdrawals. In the fourth scenario, the impact of irrigation of salty water on production decrease because of water level drop by continuing the current trend was evaluated.

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