Constitution Marsh

[1] Constitution Marsh is also used by migrating pied-billed grebes, ospreys, northern harriers, and peregrine falcons; at least 2 and as many as 30 bald eagles can be found there in the winter.

[6] Constitution Marsh sits adjacent to Foundry Cove, which was heavily polluted by industrial waste from a nickel–cadmium battery manufacturing plant that operated between 1952 and 1979.

[15] Sediment dredging efforts in the early 1970s were largely unsuccessful, and extremely high levels of both nickel and cadmium were later observed in the cove and marsh; as a result, the Environmental Protection Agency listed the area as a Superfund site in 1983.

[12] Long-term sediment and water monitoring was prescribed for Constitution Marsh, as it was determined that similar dredging there would have caused disproportionate environmental damage.

[16] Recreational opportunities include hiking trails that lead to a 700 ft (210 m) boardwalk exploring the marsh,[8] and limited paddling access through the network of man-made channels.

[19] The trails and boardwalk offer expansive views of the Hudson Highlands, including Storm King Mountain and Breakneck Ridge, as well as the United States Military Academy across the river.