Effect of development on natural water catchments

I am a student researching water conservation and rain water harvesting techniques. Your site was very helpful. However I am looking for some information on the effects of widespread development on natural water catchments. In this regard i am trying to get information on mining and soil alteration which in turn lead to the disruption of natural lakes and other catchments; they may be policy decisions, legal cases, case studies etc. Kindly help

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