Photograph of a car on a road in the scablands of the Cheney-Spangle area of eastern Washington. Automobile style dates the photograph as circa 1920-1930's.
Photograph of what looks like a school field trip exploring plant fossil beds at the head of Grand Coulee. Automobiles and clothing date the photograph as circa 1920-1930's.
Photograph of a placer gold mining operation. Placer is an open pit form of mining using water pressure to extract minerals from the earth without tunneling.
Photograph looking down on the Palouse Falls in eastern Washington. The falls have a height of approximately 196 ft. Basalt cliffs line the canyon surrounding the falls.
Dams -- Montana; Dam construction -- Montana; Hungry Horse Dam
Photograph of construction workers sand blasting at the construction of the Hungry Horse Dam. The dam was built as part of the Hungry Horse Project to provide hydroelectric power and flood control. At 564 feet, the dam is the 10th highest in the...
Dams -- Montana; Dam construction -- Montana; Hungry Horse Dam
Photograph of construction workers pouring cement at the Hungry Horse Dam construction. The dam was built as part of the Hungry Horse Project to provide hydroelectric power and flood control. At 564 feet, the dam is the 10th highest in the U.S....
Dams -- Montana; Dam construction -- Montana; Hungry Horse Dam
Hungry Horse Dam is on the South Fork of the Flathead River in Montana. The dam was built as part of the Hungry Horse Project to provide hydroelectric power and flood control. At 564 feet, the dam is the 10th highest in the U.S.
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.