Originally Posted by
Donald
Thank you all for your comments. Every one of them is helpful.
With specific reference to comments made by:
Frank
Indeed, the arches are the bits between the buttresses. I suppose you could say it was a nice design feature or that they left all these gaps to save money on the building cost! The really big burst of activity in developing hydro electric power was in the 1950s. There are lots of these dams (of different designs) - actually I don't know how many there are, something I've never thought about. Must find out.
Chris
Good point re 'What is it?' Because they're so familiar to me I made the mistake of thinking that the story was complete.