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Streetside Infiltration Swale

Streetside Infiltration Swale at 99th Avenue

Type of green infrastructure: Streetside infiltration swale
Location: 99th Avenue From 205 Street to 205 Place, Queens
Sewer Drainage Area Type: Combined Sewer
Combined Sewer Drainage Area: Jamaica Bay

Runoff from the street is diverted by curb cut and routed into the swale, where specially engineered soils and native plant species are used to absorb water and filter associated pollutants, preventing polluted water from reaching Jamaica Bay. It is one of many innovative pilot projects recommended by theNew York Department of  Environmental Protection's Jamaica Bay Watershed Protection Plan and Mayor Bloomberg's PlaNYC initiative.

Did you know?

  • One inch of rainfall falling on the street and sidewalk of a typical city block can produce 6,500 gallons of stormwater runoff.
  • This Streetside Infiltration Swale can treat one inch of stormwater runoff from a 2,200 square foot area of the street and sidewalk amounting to 1,346 gallons.
  • The plants and trees within this stormwater facility provide greenspace and microhabitat for wildlife including birds and pollinators.
  • Streets and sidewalks make up a third of the City’s impervious area.

The enhanced tree pits were constructed with additional subsurface storage technologies; as a result, stormwater would be stored for an extended period of time to allow for infiltration and provide a reservoir of water for the trees.

Green Infrastructure Pilot Projects

Related Documents and Links

Green Infrastructure

Reservoir Levels

Current: 97.4%

Normal: 88.9%