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− | File:Bioinfiltration.png|alt=image of bioinfiltration device| | + | File:Bioinfiltration.png|alt=image of bioinfiltration device|Bioinfiltration device |
File:Biofiltration with elevated underdrain.png|alt=image of biofiltration device with elevated underdrain|Biofiltration device with elevated underdrain | File:Biofiltration with elevated underdrain.png|alt=image of biofiltration device with elevated underdrain|Biofiltration device with elevated underdrain | ||
File:Biofiltration with underdrain at bottom.png|alt=image of biofiltration device with an underdrain at the bottom|Biofiltration device with an underdrain at the bottom | File:Biofiltration with underdrain at bottom.png|alt=image of biofiltration device with an underdrain at the bottom|Biofiltration device with an underdrain at the bottom |
Infiltration basins and bioretention basins are terrestrial-based (up-land as opposed to wetland-based), water quality and water quantity control treatment practices with a required drawdown time of 48 hours or less. For basins within trout stream watersheds, the drawdown time is 24 hours or less due to the need to reduce discharge temperatures.
Differences between infiltration basins and bioretention basins