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+ | [[Category:Bioretention table]] | ||
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Summary of factors that can be used to determine differences between infiltration basins and bioretention basins. This table corresponds with Table 1 in the flowchart [1].
Link to this table
BMP | Typical position in watershed | Treatment scale | Typical storm sizes | Maximum drainage area guidelines | Maximum ponding depth guidelines | Growing medium |
---|---|---|---|---|---|---|
Infiltration (basin, trench, underground, dry well) | Downgradient of other water quantity or water quality control practices | Development or regional scale control | Less frequent large storm events that exceed capacity of upgradient practices | 50 acres | 4 feet | Native soil |
Bioretention basin | Located throughout the watershed | Site scale control | Small storms (water quality events) | Typically 5 acres | Ideally 12 inches; can be up to 18 inches with appropriate design and plant selection | Engineered growing medium |