Increasing groundwater withdrawal combined with prolonged dry periods occurring in recent years in Iran, necessitated the importance of research on groundwater consumption management. One of the prevailing difficulties is the appearance of severe decline in groundwater table in the Kangawar Basin. To overcome the recent declination of groundwater, artificial recharge was evaluated and safe yield was calculated. MODFLOW was selected to simulate the aquifer. The input data including, water levels in selected wells, hydrological, geophysical data of 40 locations were obtained by field reconnaissance visits. Furthermore, pumping test data were used to determine the hydraulic parameters. Calibration was attempted for water levels in existing piezometers during the year 2003. Groundwater fluctuations from the year 2004 to 2008 were predicated to verify the model. The study reveals that observed water level data, were good adjusted to achieve a reasonable fit with calculated data. Artificial recharge impacts were assessed in different positions. Groundwater level mound of 3 m with recharged water volume of 3.42 cubic million meter (mcm) in two sites, and upcoming of 6 m in 3 sites with recharged water volume of 7 mcm were obtained. The maximum radial effect of these artificial recharge sites was found to be 1.5 km.
Key words: Artificial recharge, groundwater modeling, radial effects.
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