Many people know the Three Gorges Dam in Yichang, Hubei, but the Gezhou Dam actually came before it. The Gezhou Dam is the first large-scale water conservation project on the Yangtze River, and it has many functions, including generating electricity, shipping, and preventing flooding. It's also now a major tourist site in Yichang, attracting many people to enjoy a boat ride on the dam. Join Rachel on a boat as she experiences the changing of the water levels at the Gezhou Dam first-hand!