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Filter Drain Overview
Filter Drain (FD) is a computer program that allows quick and easy design (or review of design) of a filtration and/or an underdrain system of stormwater retention/detention
systems. The stormwater retention/detention system can be ponds, lakes, underground trenches, wetlands, canals, rivers, etc., from which water is discharged via perforated pipes embedded in filter material (i.e.,
clean fine sand, gravel, natural soil, or other filter material).
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