• Question: How do you check how good a rivers quality is?

    Asked by Thomasthetankengine to Karen on 16 Nov 2018.
    • Photo: Karen

      Karen answered on 16 Nov 2018:


      I use something called a turbidity sonde which is a machine that shoots out a small beam of light into the water, and measures the amount of light that hits the dirt (soil) and bounces back đŸ™‚

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