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Reserve Sites




The four Reserve sites are listed below from north to south, with a short description of the site settings. Many visitors enjoy these sites for hiking, canoeing, kayaking, and bird-watching. Anyone is welcome to visit these sites at any time but all are encouraged to follow posted signs regarding any closed areas or private property. More information about what you can do at each site, as well as directions, can be found here.

Stockport Flats Stockport Flats is the northernmost site of the Hudson River Reserve. It is located on the east shore of the Hudson River in Columbia County, a few miles north of the city of Hudson, in the towns of Stockport and Stuyvesant. The Stockport Flats site is a five-mile, narrow mosaic of landforms, including Nutten Hook, a bedrock outcropping; Gay’s Point and Stockport Middle Ground Island, dredge features that are both part of the Hudson River Islands State Park; the mouth of Stockport Creek, a large tributary stream; a portion of the upland bluff south of Stockport Creek; the dredge spoils and tidal wetlands between Stockport Creek and Priming Hook; and the northern end of Priming Hook. The Hudson is entirely tidal freshwater at this site.

Tivoli Bays

The Tivoli Bays component extends for two miles along the east shore of the Hudson River between the villages of Tivoli and Barrytown, in the Dutchess County town of Red Hook. The Tivoli Bays site includes Tivoli North Bay, a large intertidal marsh, and Tivoli South Bay, a shallow cove with mudflats exposed at low tide. The site also includes an extensive upland buffer area bordering Tivoli North Bay; sections of upland shoreline along Tivoli South Bay; Cruger Island and Magdalene Island, two bedrock islands, extensive subtidal shallows; and the mouths of two tributary streams, the Stony Creek and the Saw Kill.

Iona Island

Iona Island is located in Bear Mountain State Park on the east side of Route 9W in the Town of Stony Point in Rockland County, six miles south of West Point. Iona Island is a bedrock island in the midst of the Hudson Highlands, bordered to the west and the southwest by Salisbury and Ring Meadows, two large tidal marshes, the mouth of Doodletown Bight, an expanse of shallows and mudflats. A separate island, Round Island, was attached to the South end of Iona Island with fill in the early 20th century. The marshes and shallows occupy one mile between Iona Island and the west shore. In addition to being part of the Hudson River National Estuarine Research Reserve, Iona Island and its associated tidal wetlands have been designated a National Natural Landmark by the National Park Service.

Piermont Marsh

Piermont Marsh encompasses 1,017 acres and lies at the southern edge of the village of Piermont, four miles south of Nyack in Rockland County. The Piermont Marsh site is on the western shore of the Tappan Zee Bridge. The site occupies two miles of shoreline south of the mile-long Erie Pier and includes the mouth of Sparkill Creek and extensive tidal shallows. Piermont Marsh habitats include brackish tidal marsh, shallows, and intertidal flats. The Sparkill Creek drains 11.1 square miles of watershed. There is a picnic area on Paradise Avenue in Piermont. Nearby Tallman Mountain State Park offers many recreational opportunities as well.


Iona Island

Iona Island (photo: Lisa Graichen)

Tivoli North

Tivoli North (photo: Lisa Graichen)

Hudson River National Estuarine Research Reserve

New York State Department of Environmental Conservation
NOAA National Estuarine Research Reserve System

Tivoli Bays Launch Closure – 2020

The canoe and kayak launch on the Kidd Lane access road at Tivoli Bays WMA is closed for renovations until further notice. At this time, DEC does not have an estimated completion date for the project. Please contact Nathan Ermer at 845-256-3047 for more information about this project. Thank you for your patience and understanding.