Rivers:
* Snake River: The longest river in Idaho, flowing for over 1,000 miles from Yellowstone National Park to the Pacific Ocean.
* Salmon River: A major tributary of the Snake River, known for its whitewater rafting and fishing opportunities.
* Clearwater River: Another tributary of the Snake River, known for its scenic beauty and abundant wildlife.
* St. Joe River: A tributary of the Clearwater River, popular for fishing and kayaking.
* Boise River: A river that flows through the Boise metropolitan area, providing recreational opportunities such as fishing, rafting, and kayaking.
Valleys:
* Treasure Valley: A broad valley in southwestern Idaho, home to the cities of Boise, Meridian, and Nampa.
* Snake River Valley: A long, narrow valley that follows the course of the Snake River.
* Salmon River Valley: A scenic valley that follows the course of the Salmon River.
* Clearwater River Valley: A beautiful valley that follows the course of the Clearwater River.
* St. Joe River Valley: A picturesque valley that follows the course of the St. Joe River.