From this story in the Des Moines Register:
Gov. Chet Culver vowed Sunday to restore Lake Delhi, a treasured summer retreat that drained away in less than a day this weekend. The nine-mile-long lake all but disappeared after sudden floodwaters breached its 92-year-old dam Saturday morning. Residents fear millions of dollars in property values also washed away, because about 900 vacation homes and cottages lost their lakefront status. "It just makes your jaw drop," said Irv Janey, a Marion resident who owns a condominium there. "The lake's gone."