Based on the latest information available, the Clark County boat ramp in Indiana is located at latitude: 39.44645691 and longitude: -87.80776978. This boat ramp is a concrete ramp and is approximately 16 feet wide. It services the Wabash River, which flows through Indiana and several other states.

The Wabash River is a major tributary of the Ohio River, and it is used for recreational activities such as boating, fishing, and kayaking. The Clark County boat ramp is open to a variety of watercraft, including motorized boats, canoes, and kayaks. However, it is important to note that there may be restrictions on the use of certain types of watercraft, depending on the season and local regulations.

In summary, the Clark County boat ramp in Indiana is a concrete ramp that services the Wabash River, and it is open to a variety of watercraft. It is approximately 16 feet wide, and its location can be verified using the provided latitude and longitude coordinates.