One person is seriously injured in a personal watercraft accident at the Lake of the Ozarks. The highway patrol says it happened shortly before 3:00 Saturday afternoon at the 8-mile mark of the Big Niangua Arm. The PWC operated by 22-year-old Jake Lochner, of Sullivan, hit a wake causing Lochner to be ejected when the PWC came back down. Lochner was wearing a safety device and suffered serious injuries. He was taken to Lake Regional.