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Message: <blockquote data-quote="DrWazzock" data-source="post: 7806157" data-attributes="member: 2119">We have the forestry commission and golf course downstream of us. They have never cleaned out the watercourses so can’t be accused of over deepening them. They are also having the same problems of self deepening and bank collapse and are trying to hold the water back by crude dams and such like. Upstream of us there have quite a few field soil erosion prevention measures in place for a decade now.I’m wondering if we are actually the effect of a shortage of silt. Lots of winter flow but with less silt added so the watercourses deepen. It could be that was their old natural depth or more likely they were much wider slower and shallower but in any case I think we are seeing maybe unexpected consequences of field run off reduction. If nothing else is done then I think we will the see the evolution of some very deep water courses in terms of bed level below ground.</blockquote>