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.
Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction.
Removal of one of the towers used to support the conveyor belt which delivered aggregate to the west side mix plant. The foundation level of Grand Coulee Dam is complete, and the river flows through diversion slots in the dam.
Concrete construction; Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction.
Portions of the foundation level of Grand Coulee Dam have been poured, others remain to be poured. In the foreground, cooling coils are visible. These were required to maintain the desired temperature for optimum curing of the concrete.
Expeditions & surveys; Railroad surveys; Marias River (Mont.)
Marias River "flows in a channel two or three hundred feet below the prairie level, and is tolerable well wooded. The water was at that time one hundred and fifty feet wide and two to four feet deep, slightly milky, with a swift current and...
"The altitude of this butte, as determined by barometric measurement, is 281.8 feet above the level of the Shyenne (Cheyenne) River." Named for "an engagement between some half-breeds and Sioux, in which one of the former, by the...
"Minnehaha, or the Laughing Water, called also Brown's Falls. It is situated west of the Mississippi, and distant about three miles from Fort Snelling. Ten miles above the falls the stream flows from Lake Calhoun, and it passes through a level...
Expeditions & surveys; Railroad surveys; Fort Benton (Mont.); Missouri River
"Fort Benton stands on the eastern bank of the Missouri, near the Great Bend." "The river is here perfectly transparent at most seasons of the year. The Teton River empties into the Missouri six miles below Fort Benton; the Marias...