The only things that keeps lakes from going berserk during floods are their own size (bigger=harder to fill), and the height of the dam. The more shocking numbers are the rivers, where there's nothing holding the water back except the water in front of it. The Yellow River in Rockdale county near my grandparents' house was about 25' above normal at its peak.
Imagine the lake at the golf club, 7 feet higher, and flowing past you at 2-5 feet per second.
My grandparents live on a lake whose dam crest is about 20 feet above the Yellow River, and its spillway empties into the river. On Monday, the river was actually flowing over the dam into the lake.