Expeditions & surveys; Railroad surveys; Columbia River; Cascade Falls
The Cascade rapids, sometimes referred to as the Cascade Falls. This is an area of rapids in the Columbia River where travelers by boat along the river were forced to either portage boats and supplies or pull boats up with ropes. Plate XLV.
"Just below the outlet of Flathead Lake there is a series of rapids and falls, one of which, at the time, was fifteen feet high. The country to the west of the lake is a high rolling prairie. Salmon trout, three feet long, are caught in it,...