From the course: Practical Engineering
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Weirs
- Being able to control the level of water in a river is beneficial in quite a few ways. Historically, mills relied on water power to drive saws, grinding wheels, and other equipment. Raising the water level in a river can also allow boats and ships to navigate areas that would otherwise be inaccessible. Finally, having control of a river can help mitigate the damaging impacts of flooding. But how do we get this type of control over the level in body of water? Hey, I'm Grady, and this is Practical Engineering. On today's episode, we're talking about weirs. (lively music) (gentle, tinkling music) A weir is a small dam built across a river to control the upstream water level. Weirs have been used for ages to control the flow of water in streams, rivers, and other water bodies. Unlike large dams, which create reservoirs, the goal of building a weir across a river isn't to create a storage, but only to gain some control…
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