[Music] Raised over the last century as icons of engineering and for the taming of mighty rivers for hydropower facilities and water supplies. >> Engineers have radically changed the Inland Empire. >> Here in the United States, increasing numbers of dams are reaching end of life status.no longer fit for purpose, too expensive or too dangerous to operate. Of course, many monuments from that era still stand as viable important sources of water, like this dam founded more than a century ago outside San Francis ...