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Naturalized drainage ways (factsheet) are surface stormwater conveyance features that use wetland zones, drop structures, and natural materials and vegetation to replace storm sewer mains or prevent erosion of existing drainage ways.

Naturalized drainage ways generally have frequent or continual runoff (base flow). They are typically larger than grass swales, more engineered than natural wetlands, and in some cases, may appear similar to a small creek.

Additionally, prolonged stormwater contact with natural materials promotes the hydrologic cycle through infiltration, evaporation, and transpiration.

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