... effects on the river. If iron is present in the water then the river will look orange and murky. Iron cannot dissolve in water so the solid covers the riverbed. This stops the plants from photosynthesising. Indicators of poor river quality are the animals that live there. The Afon Llwyd is situated in South Wales. In its lower courses it joins the river Usk before joining the mouth of the Severn. I decided to do this topic, as I am curious as to why the river quality varies along the Afon Llwyd. I expect it will be very interesting to find out. I did this as part of group. We looked at four specific sites along the Afon Llwyd. These are some of the questions that I am hoping to answer. * How do the aesthetics vary at the ...

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