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Idaho
- 6,000 feet
Interstate
15 is now underwater along with the cities of Idaho Falls and Pocatello.
The central portion of the state is the largest land mass above sea level
and includes the higher ridges of the Payette, Sawtooth and Challis National
Forests and the Idaho Primitive Area. A few towns remain above sea level,
all in the eastern state border areas such as Island Park, Driggs and
Montpelier.
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