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The surface of the Dead Sea is hundreds of meters below sea level so it seems like pumping would only be needed to prime a siphon and then it could keep flowing. What am I missing?

https://en.wikipedia.org/wiki/Red_Sea%E2%80%93Dead_Sea_Water_Conveyance

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[-] CameronDev@programming.dev 7 points 6 hours ago

I am a pretend engineer, so take this with a grain of salt, but my guess is that because its very hard to perfectly airtight seal a pipe of that length, the siphon would be very hard to maintain.

[-] smuuthbrane@sh.itjust.works 4 points 6 hours ago

My guess is pumping losses. Essentially there's friction moving water through a pipe, and the distance would be so long as to make said friction higher than the available suction. It would probably just start cavitating and destroy the pipe.

this post was submitted on 04 Dec 2025
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