 Within the refuge is the Reed Wilderness Seashore Sanctuary, designated a National Natural Landmark on November 1967.According to the Florida Department of Environmental Protection, a significant amount of coastal erosion in Florida is directly attributable to the construction and maintenance of navigation inlets.In July 2013, approximately of beach-quality material was dredged from the St. Lucie Inlet Federal channel and impoundment basin and placed on the downdrift beaches of Jupiter Island in the vicinity of the Hobe Sound National Wildlife Refuge, with funding provided to the U.S. Army Corps of Engineers from the U.S. Congress.