Encompassing parts of Greene, Sullivan, and Clay Counties, the main park entrance is located just east of Jasonville on SR 48. With over 400 acres of water in three man-made lakes (Lake Shakamak, Lake Kickapoo, and Lake Lenape) each accessible with a boat launch, the park provides abundant boating and fishing opportunities. The 1,766-acre park owes its name to the Shakamak Indians who played a prominent part in history of the region. It also features the former camp of the Civilian Conservation Corp who contributed significantly to park improvements and structures helping to define the Shakamak State Park Historic District that is listed on the National Register of Historic Places for Clay County. The park features 8½ miles of hiking trails, tennis courts, family cabins, picnic areas, group camping area, saddle barn, and miles of bridle trails for horseback riding. The park is also known for its Family Aquatic Center open during the summer months and for its ice fishing during the winter.