CLEAR LAKE — A Wisconsin woman is dead after being struck and killed by a tractor at Clear Lake State Park on Tuesday afternoon. The Cerro Gordo County Sheriff’s Department says they responded to a medical call at State Park Beach at about 4:15 PM. An unattended tractor owned by the State of Iowa rolled down a hill towards the beach area and struck a female sitting near the beach. The woman, identified as 21-year-old Mercedes Kohlhardt of Eau Claire Wisconsin, was pronounced dead at the scene due to injuries sustained from the accident. The Sheriff’s Department says the incident remains under investigation.