TeachMeFinance.com - explain Filter (filter zone)
Filter (filter zone) The term 'Filter (filter zone)' as it applies to the area of reclamation can be defined as ' One or more layers of granular material which is incorporated in an embankment dam and is graded (either naturally or by selection) to allow seepage through or within the layers while preventing the migration of material from adjacent zones. A layer or combination of layers of pervious materials designed and installed in such a manner as to provide drainage, yet prevent the movement of soil particles due to flowing water'.
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