Lake Anna is about long from tip to tip. It has some 200 miles (300 km) of shoreline. The lake is divided into two sides: the public side (also known as the "cold" side) and the private side (also known as the "hot" side). The public side is roughly 9,000 acres (36 km²), while the private side is roughly 4,000 acres (16 km²). The private side is formed of three main bodies of water, connected by navigable canals. The public and private sides are divided by three stone dikes. The private side has no marinas or public access ramps. Only property owners and North Anna Power Station employees have access to the waters of the private side. The public side has several marinas and boat launches, including a boat ramp at the state park. The public side sees much higher boat traffic than the private side, especially on summer weekends.