REXBURG — Lee Munns was 19 years old when a massive wall of water covered the valley around his family farm. While their home suffered minimal damage, he remembers riding on horseback with his father, Lyrin Munns to help people around town. "You looked out there, and it was just a lake, but as far as you can see," Munns recalled. "The whole valley looked destroyed beyond repair." On June 5, 1976, the Teton Dam came apart during its inaugural fill.