TOP-F-251959-0000 Boulder Dam, as seen from the tail-race. The power houses on either side of the drive are 20 storeys high. The dam itself rises 726.4 feet above foundation, and water is rising behind the dam more than 400 feet above the level here in the tailrace.31st December 1937, General, Boulder Dam Credit: 2005 / TopFoto / Alinari Archives WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Date of photography: 31/12/1937 Place of photography: United States Collection: TopFoto / Alinari Archives Object type: digital image Technical info Image sizes (pixel): 2890 X 3649 Image sizes (cm at 300 dpi): 24 X 30 Image sizes (MB): 1.23 Color space: RGB