Green Infrastructure

When it rains, green infrastructure collects and manages the rain water or “stormwater” that falls on our city’s streets and sidewalks. Green Infrastructure prevents stormwater from entering the City’s sewer system, which helps to improve the health of local waterways.

We have successfully built thousands of Green Infrastructure installations, like Rain Gardens, across New York City.

Types of Green Infrastructure

Learn more about the Types of Green Infrastructure you might come across in New York City. You can also watch our Green Infrastructure Video, view our Green Infrastructure Infiltration Basin Design, and view our Green Infrastructure Photos.

Private Property Stormwater Incentives

We provide financial incentives for installing green infrastructure, or stormwater source controls, on private property in New York City. These programs help to cover up to 100% of the costs of designing and constructing green infrastructure practices.

Green Infrastructure Reports and Plans

Green Infrastructure Standards and Specifications

DEP has developed design guidelines, standards and specifications for:

  • green infrastructure built in city streets and sidewalks (right-of-way (ROW))
  • green infrastructure built within the property line of a City-owned site such as parklands and schools (public on-site)

These design standards and procedures are used by engineers, architects, landscape architects, and other city agencies to streamline the development of contract plans and drawings, and reduce the timeline and costs associated with design and approval processes. For access to previous versions of the Standards for Green Infrastructure, please contact

Right-of-Way Design Standards

Right-of-Way Standard Specifications

Public On-site Retrofit Design Standards

Green Infrastructure Protections

Proper protection of Green Infrastructure is crucial as contractors shall be liable for any damage to assets due to construction activities. Please notify at least 48 hours prior to commencing construction work near Green Infrastructure.

Impervious Area Map Layer

This DEP-developed Geographic Information System (GIS) land cover map layer displays citywide pervious areas (surfaces that allow water to pass through to the underlying soil, like permeable pavers or rain gardens) and impervious areas (surfaces that do not allow water to pass through, like asphalt or concrete) at the parcel level. It supports ongoing citywide planning efforts and programs related to stormwater, resiliency, and other initiatives.

View the Parcel-Based Impervious Area GIS Layer on OpenData