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Region 4 - Southwest New Mexico Regional Water Plan
2017 Southwest New Mexico Regional Water Plan
2005 Southwest New Mexico Regional Water Plan
The water planning region encompasses Catron, Grant, Hidalgo, and Luna Counties. The principal river basin is the Gila River, tributary to the Lower Colorado River. Principal aquifers are associated with the Gila River Basin and the Mimbres Basin.
The region is bounded on the north by Cibola County, on the west by Arizona, on the south by Mexico, and on the east by Socorro, Sierra and Doña Ana Counties.