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Dexter Marsh

Dexter Marsh
Dexter Marsh

Dexter Marsh is a relatively undisturbed, extensive example of a large bay-head marsh complex at the eastern end of Lake Ontario.

Location: Jefferson County, NY

Year designated: 1973

Acres: 1,350

Ownership: State

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Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012