Map of Lake Missoula
This file appears in: Carving the Columbia: The Ice Age Floods
The borders of Idaho, Washington, and Montana give a sense of how much land this ice-age lake covered. When the ice dams burst, the entire lake could flow into the Pacific in a matter of days.
This file appears in: Carving the Columbia: The Ice Age Floods
Carving the Columbia: The Ice Age Floods
These gently sloping hills beside the lake show the marks of a tumultuous process at work. This region of the Columbia Basin was carved over eons by the meander of the river, by slow erosion, and by…