nsAm_Govt_101RO, nsAm_Govt_101RW
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Refers to the frequency and duration of periods of saturation or partial saturation during soil formation, as opposed to altered drainage, which is commonly the result of artificial drainage or irrigation but may be caused by the sudden deepening of channels or the blocking of drainage outlets.
Refers to the frequency and duration of periods of saturation or partial saturation during [[soil]] formation, as opposed to altered drainage, which is commonly the result of artificial drainage or irrigation but may be caused by the sudden deepening of channels or the blocking of drainage outlets.
==References==
==References==
[http://www.fsis.usda.gov/Help/A-Z_Index/index.asp USDA Index]
[http://www.fsis.usda.gov/Help/A-Z_Index/index.asp USDA Index]