According to the latest information available, the boat ramp named 220th Street Boone County in Iowa is a concrete boat ramp. It is approximately 12 feet wide and services the Des Moines River. The ramp is suitable for small to medium-sized watercraft, such as canoes, kayaks, and small motorboats. It is not recommended for larger boats or vessels that require a deeper draft. The latitude and longitude provided are accurate and can be used to locate the boat ramp on a map.