Codorus Navigation and Holyoke Canal System, are based in the United States?
Codorus Navigation The Codorus Navigation Company, based in York in south-central Pennsylvania, was formed in 1829 to make a navigable waterway along Codorus Creek from York to the Susquehanna River, a distance of 11 mi . Plans called for 3 mi of canal, 8 mi of slack-water pools, 10 dams, and 13 locks with an average lift of about 7 ft .
Saint Croix Island, Maine Saint Croix Island (French: "Île Sainte-Croix" ), long known to locals as Dochet Island, is a small uninhabited island in Maine near the mouth of the Saint Croix River that forms part of the Canada–United States border separating Maine from New Brunswick. The island was the site of an early attempt at French colonization by Pierre Dugua, Sieur de Mons in 1604. In 1984 it was designated by the United States Congress as Saint Croix Island International Historic Site. There is no public access to the island, but there is a visitor contact station on the U.S. mainland and a display on the Canadian mainland opposite the island.