Based on the available information, the boat ramp named Riverwood Trail 45 is located in Uvalda, Georgia, at latitude 31.95063972 and longitude -82.5071106. It is not clear what kind of boat ramp it is, but it appears to be a public boat ramp.

The width of the boat ramp is also not specified in the available information. However, it is likely that the ramp is wide enough to accommodate most watercraft sizes, from small fishing boats to larger vessels.

The Riverwood Trail 45 boat ramp services the Altamaha River, which is a major waterway that flows through the southeastern United States. The Altamaha River is known for its diverse fish population, including catfish, bass, and bream.

As for the kind of craft allowed on the water, it is likely that the Riverwood Trail 45 boat ramp allows all types of boats, including motorboats, canoes, and kayaks. However, it is important to note that all boaters should follow the local regulations and safety guidelines to ensure a safe and enjoyable experience on the water.

Overall, the available information suggests that Riverwood Trail 45 is a public boat ramp located in Uvalda, Georgia, that services the Altamaha River and likely allows all types of watercraft.