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The approximately 350 miles (560 km) of the Colorado above the confluence of the Green, including the entire section within Colorado, was known as the Grand River. [2] [3] [4] Below the Green River the Colorado flows through Cataract Canyon, which contains some of its most difficult rapids.
The Grand Canyon [a] is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).
The last part of the Colorado River to be surveyed was the Grand Canyon itself. In 1869, John Wesley Powell with nine men set out on an expedition from Green River Station, Wyoming. They were the first part of non-natives to travel the length of the Grand Canyon, and the first to successfully travel by boat from the upper Green River to the ...
Map showing locations of major dams in the Colorado River basin. Lee's Ferry, which separates the Upper and Lower Basins, is located just downriver from Glen Canyon Dam. This is a list of dams on the Colorado River system of the southwestern United States and northwestern Mexico.
The Grand Canyon section of the Colorado River, like several other big-water Western rivers, uses a rapids scale developed by Otis R. Marston of 1–10 for rapids, 10 being the most difficult. The International Scale of River Difficulty , which classifies rapids from class I to VI, is more common elsewhere in the US and internationally.
A visual journey along the Colorado River, from the headwaters to Mexico, that shows the environmental toll on the depleting resource.
The lower 57.2 miles (92.1 km) is known as the Little Colorado River Gorge [3] and forms one of the largest arms of the Grand Canyon, at over 3,000 feet (910 m) deep where it joins the Colorado near Desert View in Grand Canyon National Park. An overlook of the gorge is a Navajo Nation Tribal Park.
Grand Canyon National Park is a national park of the United States located in northwestern Arizona, the 15th site to have been named as a national park.The park's central feature is the Grand Canyon, a gorge of the Colorado River, which is often considered one of the Wonders of the World.
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