Based on the latest information available online, the Miami County boat ramp in Kansas is a concrete ramp that provides access to the Marais des Cygnes River. It is located at latitude 38.68109512 and longitude -94.92169189. The ramp is fairly wide, accommodating multiple boats at once.

The Marais des Cygnes River is a popular location for fishing and boating. According to the Kansas Department of Wildlife, Parks, and Tourism, the river is open to all types of watercraft, including canoes, kayaks, and motorized boats. There are no horsepower restrictions on the river, so larger boats can also be used.

Overall, the Miami County boat ramp is a convenient and accessible location for anyone looking to enjoy the Marais des Cygnes River in Kansas.