Based on the latest information available, the Flood Club Road boat ramp in Kingsbury County, South Dakota is a concrete boat ramp that is approximately 16 feet wide. It services Lake Thompson, which is the largest natural lake in South Dakota with over 16,000 acres of water. The lake is popular for recreational activities such as fishing, boating, and swimming.

According to the South Dakota Game, Fish, and Parks website, motorized watercraft are allowed on Lake Thompson, including boats with outboard motors, jet skis, and pontoons. However, there are speed limits and other regulations that must be followed to ensure the safety of all users of the lake.

It is important to note that availability and conditions of boat ramps can change, so it is always recommended to check with local authorities or online resources for the latest information before launching a watercraft.