 According to the Highway Patrol report, a 20-year-old from Warrensburg drowned Friday afternoon when he was pinned underwater by a riding mower, which slid down an embankment and overturned into a private pond in Henry County. In Stone County, around 10.30 Friday night on Table Rock Lake, one boat was drifting near Kimberling City when it was hit by another boat. All occupants were apparently thrown into the water and were able to swim back to one of the boats.