Bridges; Columbia River -- History; Spokane River (Idaho and Wash.)
Highway bridge across the Spokane River east of its confluence with the Columbia. This portion of the road was flooded by the reservoir, requiring relocation of the road.
Structures which were to be inundated by the reservoir were removed before the lake started to fill. The photo appears to show the destruction of one of the piers which supported the Great Northern bridge across the Columbia at Marcus, Washington.
The lock is a single lift type, 86 feet wide and 683 feet long, with a 15-foot minimum depth over the sills. The vertical lifts average 75 feet. The lock is located on the Washington side of the Columbia River.
Architectural drawing of the McNary Dam, a 7365 foot hydroelectric dam that spans the Columbia River. McNary Dam is located one mile east of Umatilla, Oregon.
Expeditions & surveys; Railroad surveys; Canyons; Grand Coulee (Wash.)
"The Grand Coulee is about ten miles wide where it opens on the Columbia River at its northern end, which is a hundred feet above the water, and gradually widens toward the south; its walls, eight hundred feet high are formed of solid basaltic...
"The mission is located upon a hill overlooking extensive prairies stretching to the east and west toward the Coeur D'Alene Mountains and the Columbia River. About a hundred acres of the eastern prairie adjoining the Mission are enclosed and...