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After conducting research, it appears that the boat ramp named South Colwell Pond in New York is a concrete ramp that provides access to South Colwell Pond. The width of the ramp is not specified in the available information. According to the New York State Department of Environmental Conservation, South Colwell Pond is designated for "non-motorized boating only." Therefore, only non-motorized watercraft, such as canoes, kayaks, and rowboats, are permitted on the water.

It should be noted that the information available on the South Colwell Pond boat ramp may be subject to change. Therefore, it is advisable to consult local authorities or the relevant websites for the latest updates on the ramp's specifications and regulations.