Harper Creek Boat Launch is located in St. Mary's County, Maryland, and is a popular boat ramp for recreational boaters and anglers. It is a concrete boat ramp that is wide enough to accommodate two boats at a time. The ramp is also equipped with a floating dock that allows boaters to easily board and disembark from their vessels.

Harper Creek Boat Launch services the Patuxent River, which is a major tributary of the Chesapeake Bay. The Patuxent River is approximately 110 miles long and is a popular area for recreational boating and fishing.

The body of water serviced by Harper Creek Boat Launch allows a variety of watercraft, including motorized boats, kayaks, canoes, and sailboats. Boaters can explore the many creeks and coves that are located along the Patuxent River, which are home to a diverse range of wildlife and aquatic plants.

The information provided is accurate as of the time of writing, but it is always recommended to check with local authorities for the most up-to-date information regarding boat ramps, regulations, and restrictions.