Tappan Zee is the 2-mile-wide part of Hudson River between Piermont and Croton Point, 8 miles to the northward. Tappan Zee Bridge, Mile 23.5, crosses Tappan Zee from Nyack to Tarrytown. A regulated navigation area and a safety zone surrounds the bridge. A racon is atop the center of the main channel span of the southernmost bridge. Tarrytown, Mile 24E, has about 1 mile of developed waterfront, part of which has been improved by dredging. Tarrytown Light (41°05’03″N., 73°52’28″W.), 54 feet above the water, is shown from a white cast iron and concrete tower.
A federal project provides for depths of 12 feet in both the northwest and southwest connecting channels in Tarrytown Harbor and also in the waterfront channel. An obstruction, consisting of rocks, is on the east edge of the waterfront channel in about 41°04’48″N., 73°52’10″W. Both access channels are buoyed. Tarrytown Harbor usually is open to navigation throughout the year, but in severe winters ice floes from the upper river may temporarily block the channels.
Anchorages:
A special anchorage is at Tarrytown. Several waterfront terminals, with depths of 10 feet alongside, are available at Tarrytown, and there are rail connections nearby. The wharves are used mostly for the receipt of petroleum products, sand, gravel and crushed rock. A marina is southward of the principal wharves; berths, gasoline, diesel fuel, electricity, water, ice, marine supplies and a 15-ton mobile hoist are available. Two private boat clubs are southward of the marina; a launching ramp is available.
