The Jacksonville Beaches communities are all located on an unnamed barrier island defined by the Atlantic Ocean to the east, the St. Johns River to the north, and the Intracoastal Waterway to the west. The island was actually originally a peninsula until 1912, when a 10-mile channel was dug connecting the San Pablo and Tolomato Rivers, facilitating the Intracoastal Waterway and separating the land from the mainland. The island has no official name; beginning in the 21st century there has been a push to name it San Pablo Island. The northernmost of the beach communities is Mayport, in Duval County. Since the consolidation of the Jacksonville and Duval County governments in 1968, Mayport has been within the city limits of Jacksonville. Most of Mayport is currently occupied by Naval Station Mayport, a major U.S. Navy base. Moving south along the coastline are three incorporated towns, also within Duval County: Atlantic Beach, Neptune Beach, and Jacksonville Beach. All three maintain their own municipal governments; however, residents receive county-level services from Jacksonville and vote for Jacksonville's mayor and City Council. Continuing south into St. Johns County is Ponte Vedra Beach. Typically, only the communities on the northern part of the island are considered the Beaches; areas to the south such as Vilano Beach are usually not included. The Palm Valley area of St. Johns County, much of which is also located on the island, is sometimes considered part of the Beaches.