The scientists used a model and Geographic Information System tools to manage water resources in a dry area. They created a map to show where groundwater can be recharged effectively. About 45% of the shallow aquifer area is highly rechargeable, while only 29% has medium recharge potential. By adding recharge rates to the model, they found that increasing water extraction can lower water levels, but building a recharge dam can raise them. This information can help decision makers plan how to use water resources effectively.