Stormwater Water originating from rain, snowmelt, or ice melt that runs off roofs, driveways, sidewalks, and other paved, impervious urban surfaces.
In highly paved environments like New York City, massive amounts of stormwater are generated during heavy rainstorms, overwhelming municipal sewer systems. NYC regulations actively encourage property owners to use sustainable, permeable landscaping choices to absorb stormwater locally. When replacing sidewalks, incorporating green infrastructure like bioswales, tree pits, and permeable pavers helps capture stormwater at the source, protecting the neighborhood from flooding. Resource link: nyc.gov/dep
Frequently Asked Questions About Stormwater
What is stormwater?
Water from rain, snowmelt or ice melt that runs off roofs, driveways, sidewalks and other paved surfaces instead of soaking into the ground.
Why is it a problem in NYC?
Extensive paving generates large volumes quickly, which can overwhelm the sewer system during heavy storms.
How can sidewalk work help?
Correct grading, properly sized tree pits, permeable materials where permitted, and green infrastructure all capture or slow water at the source.
Who manages stormwater infrastructure?
The Department of Environmental Protection. See https://www.nyc.gov/site/dep/index.page