Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-whitewater-a480aa456c99

Why are holes also called hydraulics dangerous?

They recirculate water that can trap a boater.

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  1. They only appear in dry weather
  2. They recirculate water that can trap a boater ✔
  3. They always contain sharp metal

Why: Holes recirculate surface water back upstream, and a boater or craft may become stuck under the surface.

Huh, didn't know that: Holes recirculate surface water back upstream, and a boater or craft may become stuck under the surface.

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That hole is a real trap.
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References

Answer: They recirculate water that can trap a boater. Holes recirculate surface water back upstream, and a boater or craft may become stuck under the surface.

  1. Whitewater en.wikipedia.org/wiki/Whitewater
    a boater or watercraft may become stuck under the surface in the recirculating water
    Checked 2026-11-07.

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