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We've got a creek. I can't cross it with machinery and need to build a bridge at some point in the future. So I devised a way to create an Archimedes screw turbine within a culvert to generate electricity and to not hurt fish or violate riparian area rules.
Turns out this is the latest way to do
both of those things.
If, like me, you had no clue this existed... well if you've read this then you can't say that anymore.
one of the oldest feats of engineering still being used today
considered more fishfriendly than conventional turbines. However, only a handful of studies have been done to assess this [a1, May 08 2023]