• Minimize impervious surfaces in site design;
• Adopt strategies to infiltrate, evaporate, and reuse rainwater;
• Utilize low impact development (LID) and green infrastructure strategies that increase detention and manage the rate of stormwater flow; and
• Install stormwater infiltration, detention, and storage.

Specific examples of LID and green infrastructure technologies include bioswales, rain gardens, rainwater harvesting for reuse, green roofs, blue roofs, living walls, and detention basins or tanks. Trees and pavement suspension technologies or structural soils can also manage rainwater in dense urban environments.

The City Storm Water BMP Guide for New and Redevelopment (2017) provides details on post-construction measures that can be integrated into building design. An appendix to the BMP Guide is currently under development that will provide more detailed specifications and guidelines for LID features, including infiltration basins and trenches, vegetated bioretention basins, permeable pavement and pavers, vegetated swales, biofilters, and buffer strips.

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Collect, Slow, and Infiltrate Stormwater with Green Infrastructure and LID

Green Infrastructure/LID Examples

• Green Roofs

• Blue Roofs

• Living/Green Walls

• Rain Gardens

• Detention Tanks

• Permeable Pavements