After conducting a search, it appears that there is no information available on a boat ramp named Broadway Buchanan with the provided latitude and longitude coordinates in New York. It is possible that the location may be a private boat ramp or a non-official designation.

It is important to note that there are many public boat ramps located throughout New York state that provide access to various bodies of water. These ramps vary in size and are designed to accommodate a range of watercraft, from kayaks and canoes to larger vessels such as motorboats and sailboats.

To obtain accurate information on a specific boat ramp in New York, it is recommended to contact the local Department of Environmental Conservation or Parks and Recreation department for up-to-date details on the ramp's location, size, and permitted watercraft.