It is 7993 feet deep and is the deepest gorge in the US. See the related link for more information.
about 25000 feet
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No accurate estimate is possible.
It was the Colorado River.
That would be CANYON.
A canyon
Hells Canyon, located along the border of eastern Oregon and western Idaho, is the United States' deepest canyon/gorge at 7,993 ft (2,436m). It is part of the Hells Canyon National Recreational Area.
Hell's Canyon is a gorge of the Snake River, forming part of the Idaho-Oregon boundary. It is 125 miles long, and for 40 miles it is more than a mile deep. A maximum depth of 7,900 feet (2,400 m) makes it the deepest gorge in North America. Along with its surrounding area of 662,000 acres, Hells Canyon was designated a national recreation area in 1975.
Its is 4.500.000 miles wide and 45.000.000 miles long and 2700 feet deep
* Black Canyon of the Gunnison ~ Colorado * Bryce Canyon ~ Utah * Columbia River Gorge ~ Pacific Northwest * Grand Canyon ~ Arizona * Grand Canyon of Yellowstone ~ Wyoming * Hells Canyon ~ Idaho and Oregon * Kings Canyon ~ California * Palo Duro Canyon ~ Texas * Red River Gorge ~ Kentucky * Royal Gorge ~ Colorado
The Great Gorge is south of Mt. McKinley in Alaska. It is 9,000 ft deep and the Ruth glacier runs through it. Hells Canyon is the deepest river gorge in the lower 48. It is located between the borders of Oregon & Idaho, as the Snake River runs through it. It averages 5,500 feet in depth over it's entire 40 mile length, but reaches 7,900 feet in places.
South Idaho: City of Rocks Craters of the Moon Hells Canyon Malad Gorge Oregon National Historic Trail Snake River Birds of Prey National Conservation Area Three Island Crossing State Park Yellowstone National Park Boise North Idaho: Coeur d'Alene -- large beach on a huge lake Sandpoint -- also has beach, plus the lake is bottomless...it is so deep the Navy tests sonar there Wallace -- old mining town with "picturesque" history. Cataldo Mission -- oldest building in Idaho St. Maries -- home of the St. Joe River, the highest navigable river in the world
I'm not positive, but I think it is the Saguenay in Quebec Province. It is 600-900 feet deep and flows into a fjord. Beluga whales breed in its cold waters. Steep cliffs along its bank. I think it is the Saguenay River. Dr. Dan Finley, Panama City, Florida
5,500 feet
Glen Canyon is approximately 710 feet deep, or approximately 220 meters deep. The canyon, with the Glen Canyon Dam, can hold 5,370,000 cubic yards for water.
A deep valley could be called a canyon, such as the Grand Canyon.
A canyon is a deep narrow valley.
It is a Canyon as in the Grand Canyon.