Enhance Rainwater Runoff using Concrete Footpaths and Parking Spaces in LEED Green Associate Projects (USGBC)
In the realm of sustainable urban development, the choice of materials for sidewalks and parking areas can have a significant impact on stormwater management.
Rainwater discharge, the amount of rainwater that leaves a site as surface runoff or subsurface flow, is a crucial factor to consider. Installing concrete sidewalks and parking areas can lead to an increase in rainwater discharge from a site. This is because concrete pedestrian walkways and parking lots will cause increased surface runoff by reducing the infiltration of rainwater into the ground.
On the other hand, options like porous pavers for parking lots, bioswales, rain gardens with native plants, and even vegetated roofs, can help decrease rainwater discharge. Porous pavers allow water to percolate into the ground rather than running off, while vegetated roofs absorb and retain rainwater, reducing runoff. Bioswales and rain gardens, meanwhile, collect and filter stormwater, helping it to slowly soak into the soil.
This information is particularly relevant for those preparing for the USGBC LEED Green Associate certification exam, as understanding the impact of different materials on stormwater management is a key part of the exam.
However, it's important to note that an increase in rainwater discharge can lead to several environmental issues. Rainwater discharge can cause erosion, flooding, sedimentation, pollution, and habitat loss. By minimizing impervious surfaces and instead using green infrastructure elements like porous pavers, bioswales, rain gardens, and even vegetated roofs, we can help mitigate these issues and contribute to sustainable stormwater management.
In conclusion, while concrete sidewalks and parking areas may be practical choices for some urban developments, it's essential to consider their impact on stormwater management and the environment as a whole. By making informed choices, we can help create more sustainable and resilient cities.
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