The Swan River is one of four bodies of water that wind their way into the town of Patchogue on the south shore of Long Island. Patchogue is located in the middle of Long Island about 50 miles from both Manhattan and Point Montauk. Two marinas make their home here, and one of them will greet visiting mariners with open slips.
Use NOAA Chart 12352.
The Swan River is approached from the south via Great South Bay toward the eastern end of the town of Patchogue. Flashing green buoy 1, the only aid to navigation for the river, is situated about a quarter mile from the rivers mouth. The channel into the Swan River has reported depths of five feet, From flashing green buoy 1, make your way up to the narrow entrance, and be sure to keep your eye on the depth sounder as you work your way in slowly.
Once you have made your way up into the Swan River, you will find two marinas. The first marina is directly to starboard after the rivers mouth (visible in the image above), and there is another facility farther up the river to port. The first marina can handle limited repairs (no haul-outs), while the second marina will accept transient guests at their slips. There are a few places to anchor in the river, most notably at the head of the creek across from the marina in four-foot depths.
Local Notices to Mariners are available online from the U.S. Coast Guard.