Identity elements
Reference code
Name and location of repository
Level of description
Part
Title
NWRPC-0187 Front
Date(s)
- c. 1945 (Creation)
Extent
Content and structure elements
Scope and content
Preliminary plans for the Grand Coulee Dam were made in the early 1920's, but the dam itself was not completed until 1941. The powerhouses and pumping plants were worked on during World War II and completed by 1946. 12 million cubic yards of concrete were used in the project, making it the largest concrete structure in the world. circa 1945.