
Siltation is the pollution of water by fine particulate terrestrial clastic material, with a particle size dominated by silt or clay. It refers both to the increased concentration of suspended sediments, and to the increased accumulation (temporary or permanent) of fine sediments on bottoms where they are undesirable. Siltation is most often cause...
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http://en.wikipedia.org/wiki/Siltation

deposition of earthy matter, fine sand, or the like by moving or running water (Stein 1966).
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http://imnh.isu.edu/digitalatlas/bio/glsry.htm

The deposition or accumulation of fine soil particles.
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http://www.encyclo.co.uk/local/21804

The deposition of silt (very fine aggregate) along the substrate of an aquatic habitat (usually a stream), often with deleterious effects on its inhabitants. Can result from natural phenomena or from human activities such as land development.
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http://www.encyclo.co.uk/visitor-contributions.php

the deposition of fine-grained sediments (mud and sand). The finer the sediment, the longer it takes to settle or strand, and the more readily it is disturbed.
Found on
http://www.seafriends.org.nz/books/glossary.htm
No exact match found.