According to the latest information available, Prairie Road 21 boat ramp in Unity, Maine is a public boat ramp that provides access to Unity Pond. It is a concrete ramp with a width of approximately 15 feet and a length of about 40 feet. Unity Pond, also known as Lake Winnecook, is a 2,524-acre freshwater lake that is popular for fishing, boating, and swimming.

The Maine Department of Inland Fisheries and Wildlife manages the lake and has established rules and regulations for watercraft use. All motorized and non-motorized watercraft are permitted on the lake, including boats, canoes, kayaks, and paddleboards. However, there are specific rules regarding speed limits, life jackets, and other safety measures that must be followed.

Overall, Prairie Road 21 boat ramp in Unity, Maine provides easy access to Unity Pond for a variety of watercraft and recreational activities.