Iona Island (New York)

Iona Island
	View of Iona Island from atop Bear Mountain
	Iona Island Location of Iona Island in New York State
Geography
Location	Hudson River
Coordinates	41°18′14″N 73°58′38″W
Area	556 acres (225 ha)
Highest elevation	72 ft (21.9 m)
Administration
	United States
State	New York
County	Rockland County
Town	Stony Point
Owner	Palisades Interstate Park Commission; New York State Office of Parks, Recreation and Historic Preservation;
U.S. National Natural Landmark
Designated	1974

Iona Island is a 556-acre (2.25 km²) island of the Hudson River in the town of Stony Point, New York, on its west bank. The island is located approximately one mile (1.6 km) south of the Bear Mountain Bridge and is separated from the Hudson's western shore by mudflats and freshwater tidal marshes. It is part of Bear Mountain State Park, although it is occasionally listed separately as Iona Island State Park. From 1899 to 1947 the island was used as the Naval Ammunition Depot Iona Island.

The island and its adjacent marsh were designated a National Natural Landmark in May 1974, and it is part of the Hudson River National Estuarine Research Reserve. It serves mainly as a bird sanctuary, particularly known as a winter nesting place for bald eagles.

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