The river that flows through the Grand Canyon in the United States is the Colorado River. This iconic river stretches approximately 2,330 kilometers and is a crucial water source for several southwestern states. The Grand Canyon, carved by the Colorado River over millions of years, showcases stunning geological formations and a variety of ecosystems. Visitors to the Grand Canyon area enjoy activities such as hiking, rafting, and sightseeing, with breathtaking views of the canyon’s layered rock formations. The Colorado River is also significant for its role in irrigation and hydroelectric power generation in the region.