Groundwater is a vital water source in central Arizona, but decades of overuse have caused water levels to drop significantly. This study explores a practical solution called Agricultural Managed Aquifer Recharge (Ag-MAR), which involves intentionally flooding farm fields to help refill underground aquifers. Using real flood event data from a 2019 storm and focusing on three major irrigation districts near Phoenix, we identified the best areas for recharge based on factors like soil type, groundwater depth, and crops grown, especially alfalfa, which can tolerate extra water. We then simulated the recharge using a detailed groundwater model. The results showed that even a short, 20-day flood event could meaningfully raise water levels and produce lasting benefits, especially in areas with the right soil and crop conditions. This research shows that Ag-MAR can be a powerful and cost-effective tool to boost groundwater supplies, not only in Arizona but in other dry regions facing similar water challenges.