Chouteau Island and Gateway Arch can both be found having at least half of their area in what state?
Chouteau Island Chouteau Island ( ), situated approximately 8 mi due north of the Gateway Arch in St. Louis, Missouri, and approximately 1 mi south of the confluence of the Missouri River and Mississippi River, is one of a cluster of three islands: Chouteau Island, Gabaret Island, and Mosenthein Island. The three, with a combined area of approximately 5500 acre , are located in Madison County, Illinois. The three-island complex is also referred to as "Chouteau Island". The island is manmade, having been created during the construction of the Chain of Rocks Canal between 1946 and 1953. Most of Chouteau Island lies in Chouteau Township, but its southern quarter lies in Venice Township, both in Madison County. Gabaret Island and Mosenthein Island both lie entirely in Venice Township.
Wellesley Island State Park Wellesley Island State Park is a 2636 acre state park located on Wellesley Island in the St. Lawrence River in the Town of Orleans in Jefferson County, New York. The park is divided into sections that are on different parts of the island. It has the largest camping complex in the Thousand Islands region, including wilderness campsites on the banks of the St. Lawrence accessible only by foot or boat. The park is open year-round.