Roper Lake State Park Hot SpringRoper Lake State Park Hot Spring is a single geothermal mineral spring in Roper Lake State Park, Safford, Arizona.Water profileThe hot mineral water emerges from the ground at 99 °F.LocationThe hot springs are located in the State Park which offers camping, cabins, swimming, hiking and fishing. They are handicapped accessible, with railings, and one can drive a vehicle up to the spring. About eight people can fit in the single rock and concrete pool.