The 277 miles (446 km) of the river that flow through the Grand Canyon are largely encompassed by Grand Canyon National Park and are known for their difficult whitewater, separated by pools that reach up to 110 feet (34 m) in depth.
277 mil (446 km) sungai itu aliran melalui Grand Canyon sebahagian besarnya dikelilingi oleh Taman Nasional Grand Canyon dan dikenali dengan jeram sukarnya, dipisahkan oleh kolam yang mencapai sehingga 110 kaki (34 m) kedalaman.