After conducting research, I was unable to find any specific information regarding a boat ramp named Southwest Citrus Boulevard 21479, Indiantown in Florida. It is possible that the name or location may have changed, or it may be a smaller, lesser-known ramp that is not widely documented online.

In general, boat ramps in Florida are regulated and maintained by the Florida Fish and Wildlife Conservation Commission (FWC). They vary in size, capacity, and amenities, and typically provide access to lakes, rivers, and coastal areas for recreational boaters. The FWC website provides a searchable map of boat ramps throughout the state, as well as information on their locations, capacities, and any restrictions or regulations that apply.

If more specific information about the Southwest Citrus Boulevard boat ramp becomes available, it may be possible to determine the type of ramp, its width, the body of water it services, and the types of watercraft permitted on the water. However, without this information, it is impossible to provide a complete answer to the question.