After conducting research, I was unable to find any information about a boat ramp named County Road 6 in Brown County, South Dakota. It is possible that the ramp has been recently constructed or renamed, or it may be a smaller, less well-known ramp that is not widely documented. Without more information, it is not possible to determine the kind of boat ramp it is, its width, the body of water it services, or what kind of craft are permitted on the water.

In general, boat ramps can vary widely in size, shape, and amenities depending on their location and purpose. Some ramps are designed for smaller boats like kayaks or canoes, while others can accommodate larger vessels like fishing boats or speedboats. Most boat ramps are located along rivers, lakes, or coastal areas and provide easy access to the water for recreational activities like fishing, water sports, and boating.

If there is a specific boat ramp in Brown County, South Dakota that you are interested in, I would recommend contacting the local parks and recreation department or county government to inquire about its location, hours of operation, and any restrictions or regulations that may apply. Additionally, speaking with local boaters or fishing enthusiasts may also provide valuable insights and information about the area's waterways and facilities.