Siltation: The deposition of finely divided soil and rock particles upon the bottom of stream and river beds and reservoirs.
Sleet: Precipitation which is a mixture of rain and ice.
siltation Referring to the deposition of silt-sized particles.
Silurian Of the period of the Paleozoic era characterized by the appearance of land plants; also, of the rocks of that period.
siltation
The deposition or accumulation of fine soil particles.
silviculture ...
Siltation: The process of becoming clogged with fine sediments.
Storm Drain: A system of gutters, pipes, or ditches used to carry stormwater runoff into sewers or streams.
siltation due to floods;
eutrophication of lakes due to seasonal changes
acid rain caused by natural volcanic discharges or smog from factories
acid pollution of rivers and lakes by runoff from naturally acidic soils ...
 See also: Water, Environment, Discharge, River, Sewage
  
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