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United Nations Environment Programme
Division of Technology, Industry and Economics
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Newsletter and Technical Publications
<Planning and Management of Lakes and Reservoirs:
An Integrated Approach to Eutrophication
Abridged Version- A Student's Guide>


Sediment Control

The prevention of soil erosion in watersheds draining into lakes is an imperative step in the control of non-point sources of nutrients and agricultural chemicals. Human-made changes to river and stream banks, and changes in flow characteristics result in increased erosion of exposed riverbanks. Changes are caused by removal of tree cover and of ground cover for agricultural production. Cattle, sheep, and other animals with free access to streams and rivers cause bank collapse and damage. To prevent this type of erosion, fences to exclude access of animals to the stream or river are required; access for drinking must be provided by construction of an access point.

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  • International Year of Forests
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