Lake Mary Jane is located north of the city of Sebring, Florida. It is a man-made lake, being dredged from a swamp. Its surface area is 10.5 acres (42,000 m2). The lake is privately owned, in fact being entirely within the Bluffs of Sebring, a condominium development. Lake Mary Jane is closed to the public, existing for the enjoyment of the condo residents and their visitors. Condos almost completely surround the lake, which is about a half mile long and a block wide.