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There are many videos on Youtube about opening of new dams, where the water is already ready to go though the dam.

What I wonder is how engineers moves water to a new dam.

To me it seams as a chicken and egg problem.

  • Are explosives involved?
  • And how do you prevent the water from hammering into the new dam and destroy it?
  • How did they get e.g. the water to Hoover Dam?
Sandra Schlichting
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    They built the dam on the path of the river. They mined bypass tunnels for use during construction. You'll probably find the answer on a simple YouTube search. Many US dams are now being removed as they are environmentally detrimental and silt up rendering them not much use. – Transistor May 18 '21 at 19:51
  • How do they prevent the water from going into the bypass tunnel while making it? I'd really like to see videos of this. Any idea for search terms? =) – Sandra Schlichting May 18 '21 at 19:54
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    They let it go along the old river bed while digging the tunnels. "Hoover dam construction", of course. – Transistor May 18 '21 at 19:56
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    There is a film / documentary about the construction of the Hoover dam, includes the info of the treatment of the workers to to the air conditions - take the time to find and then watch it. – Solar Mike May 19 '21 at 02:49

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