The Snake River Canyon is formed by the Snake River

Snake River

The Snake is a major river of the greater Pacific Northwest in the United States. At long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean...

 on the western border of Wyoming

Wyoming

Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

 south of Jackson Hole

Jackson Hole

Jackson Hole, originally called Jackson's Hole, is a valley located in the U.S. state of Wyoming, near the western border with Idaho. The name "hole" derives from language used by early trappers or mountain men, who primarily entered the valley from the north and east and had to descend along...

. At the southern end of this canyon is the town of Alpine, Wyoming

Alpine, Wyoming

Alpine is a town in Lincoln County, Wyoming, United States. The population was 550 at the 2000 census.-Geography:Alpine is located at the southern end of the Snake River Canyon where the Snake River enters Palisades Reservoir. The town is also known as Alpine Junction since it marks the point...

 where the Snake River

Snake River

The Snake is a major river of the greater Pacific Northwest in the United States. At long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean...

 meets the Greys River

Greys River

The Greys River is a tributary of the Snake River, flowing through western Wyoming in the United States. The river is about long, starting high up in the Wyoming Range, south of the town of Alpine in Lincoln County. The river eventually flows into the Snake River in the Snake River Canyon,...

 and the Salt River

Salt River (Wyoming)

The Salt River is an river draining a valley in Lincoln County in western Wyoming. It is named for several exposed beds of salt and briny salt springs of up 60% pure salt in Idaho that drains into the Salt River via Stump Creek. The Salt River valley was a popular destination for Indians and later...

 at Palisades Reservoir on the Wyoming

Wyoming

Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

-Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

 border. It is a popular destination for rafting trips and is known for having some of the best white-water rafting in the United States. Running through the canyon is Highway 89

U.S. Route 89

U.S. Route 89 is a north–south United States Highway with two sections, and one former section. The southern section runs for 848 miles from Flagstaff, Arizona, to the southern entrance of Yellowstone National Park...

, which is used by the many Star Valley residents who commute to Jackson Hole daily.