Abstract
Most water is obtained from groundwater in dry and semi-dry regions when permanent water sources like rivers and lakes do not exist. It is vital that groundwater is recharged to ensure that it remains abundant. By utilizing remote sensing techniques, geographic information system, analytical hierarchy process, and considering seven layers, this article presents a method for identifying suitable groundwater recharge areas. The mentioned layers include rainfall maps, slope, land cover, soil texture, lithology, drainage network density, and lineament density of Neyshabur Plain with an area of 7134 square kilometers. The artificial recharge map of Neyshabur Plain was created with four suitable categories: excellent, good, moderate, and poor. According to the study, 5.8% and 69.9% of the study area would be excellent and good for artificial recharge, respectively, while 21% and 3.3% of the area would be poor and unsuitable for artificial recharge, respectively. Most areas with excellent to good recharge have a slope between 0 to 3.4 degrees and are used for irrigated agriculture, dry farming, and low-density pastures. The main soil type in areas with excellent to good recharge is loam followed by sandy loam. Validation was done with 56 piezometers throughout the study area. In addition, the relative operating characteristic curve (ROC) was performed which indicates a good prediction accuracy.
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