The Red river delta plain is the second-largest delta in Vietnam with an area of over 14,860 km2, residing 22.5 million people, and the place with the largest population density in the country. Groundwater is a valuable resource that has been exploited but some problems such as ground subsidence, pollution, depletion, and saltwater intrusion related to groundwater have also occurred in this area. In order to sustain groundwater exploitation, groundwater recharge needs to be clarified with an assessment of less subjective involvement. AHP method was applied to determine the weights based on their impact rating on groundwater recharge potential. The verification of overlay integration is also made and implied that the model made is reliable
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