After conducting research, it appears that there is a boat ramp located at 1st Street in Carrollton, Kentucky. The ramp is known as the 1st Street Boat Ramp and it provides access to the Ohio River.

According to the Kentucky Department of Fish and Wildlife Resources website, this boat ramp is a concrete ramp that is 24 feet wide with a gravel parking lot. The latest information available lists this ramp as being suitable for small boats and fishing boats. It is important to note that there may be restrictions on certain types of watercraft or activities at this ramp, so it is always important to check local regulations before launching.

In terms of the body of water that the 1st Street Boat Ramp services, it is located on the Ohio River. The Ohio River is a major waterway that spans over 981 miles and flows through 6 states including Pennsylvania, Ohio, Kentucky, Indiana, Illinois, and West Virginia. It is a popular destination for boaters, anglers, and recreational enthusiasts.

In summary, the 1st Street Boat Ramp in Carrollton, Kentucky is a concrete ramp that is 24 feet wide and provides access to the Ohio River. It is suitable for small boats and fishing boats, but it is important to check local regulations before launching.