Norris Dam and powerhouse. General view of Norris Dam. Spillway in foreground
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Library of Congress
No known restrictions on images made by the U.S. government; images copied from other sources may be restricted. For information, see U.S. Farm Security Administration/Office of War Information Black & White Photographs http://www.loc.gov/rr/print/res/071_fsab.html