"This valley for the most part is wide and open." There are "spurs separating it from the Hell-Gate Valley on the south," and "separate on the north the various tributaries flowing into the Blackfoot River." Plate LXII.
"The Peluse (Palouse) River flows over three steppes, each of which is estimated to have an ascent of a thousand feet. The falls descend from the middle of the lower of these steppes." "The fall of the water, which is about thirty...
Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction.
The initial level of concrete has been poured across the entire distance of the bottom of the dam. The Columbia is flowing over the central portion of the dam.