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Built 80 years ago, the magnificent Hoover Dam still stands strong, serving the United States for irrigation, flood control, and power generation. Even during heavy rains, you won’t see the Hoover Dam overflow like this, causing devastation. Welcome to Hoover Dam Engineering Secrets. In this video, you’ll take on the role of Mr. John Savage, the Hoover Dam design engineer, and design and build a massive dam on the Colorado River in Arizona.