Quote:
Originally Posted by Elspode
I guess the spillway shaft itself is just a tunnel drilled through solid rock? I'd like to the see profile of that...I mean, it has 770' of drop, and has to make a bend from vertical to horizontal at some point. The water pressure at that bend must be tres' impressivo.
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Pretty sure it's concrete all the way, constructed integral with the dam. Hoover/Boulder Dam, however, uses bypass tunnels through the rock that are fed by a spillway channel. I've seen that setup and those tunnels must be 50 feet in diameter.
