The park extends three miles along the south shore of its namesake, beautiful Lake Manatee.
The lake was created when a dam was built across the Manatee River in the mid-1960s. Despite the park's name, visitors cannot actually see manatees at this park because the dam blocks their access to the lake. The lake offers excellent freshwater fishing and anglers can fish from their boats or from the park's fishing docks.
Lake Manatee State Park's designated swimming area is along the shores of a man-made reservoir. Water plants are frequently blown ashore. Conditions and accessibility vary seasonally. It is strongly recommended that those wishing to use the swimming area call in advance of their visit for current conditions. A lifeguard is not provided.