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Green Infrastructure Plan and Reports

In September 2010, New York City released the NYC Green Infrastructure Plan which presents an alternative approach to improving water quality that integrates “green infrastructure,” such as rain gardens and green roofs, with investments to optimize the existing system and to build targeted, cost-effective “grey” or traditional infrastructure.





2016 Green Infrastructure Performance Metrics Report
This 2016 Performance Metrics report describes CSO reductions based on the 1.5% GI implementation rate and a modeled CSO volume reduction based on the 10% implementation rate. The 1.5% equivalency rate incorporates data on the existing and planned GI implemented through the Green Infrastructure Program to date, which has primarily focused on retention based right-of-way bioswales using site-specific information to model individual, distributed assets. By contrast, the 10% equivalency rate incorporates a lumped approach to estimate future projects where GI asset specifics such as location, technology type and design details are currently unknown. Finally, for the 1.5% GI implementation rate, DEP has included two equivalency rates that are defined as: a) “Stormwater capture to CSO reduction ratio” and b) “Million Gallons (MG) of CSO eliminated on an annual basis per acre (Ac) of impervious area managed by GI.”
Report (PDF)
Appendices (PDF)




Green Infrastructure Contingency Plan for the 1.5% Implementation Rate Milestone
DEP submitted a Contingency Plan on June 27, 2016, for the 1.5% milestone for the Green Infrastructure Program. As previously reported, DEP was not able to achieve the 1.5% implementation rate by December 31, 2015 and has therefore submitted the Contingency Plan to show planned projects that will achieve the remaining impervious acres needed.
Contingency Plan (PDF)




2015 Green Infrastructure Annual Report
The 2015 Annual Report contains updates on the Green Infrastructure Program which includes retrofits to the City’s streets and sidewalks, public property, private property through the Green Infrastructure Grant Program, maintenance and operations, and green infrastructure project tracking and asset management. It also provides updates on the impervious acres managed through 2015, estimated impervious acres to be managed through 2016, and Program funding.
Download the report (PDF)




2014 Green Infrastructure Annual Report
In 2014 DEP met or exceeded the expected green infrastructure performance rates for the three Neighborhood Demonstration Areas, committed $36 million for green infrastructure construction as part of the City’s Community Parks Initiative, supported the construction of two green infrastructure playgrounds with the Trust for Public Land, increased the scale of Area-wide design and construction contracts within Priority CSO Tributary Areas, advanced and diversified the standard designs for right-of-way green infrastructure, and much more. Learn more in our latest update for 2014.
Download the report (PDF)




2013 Green Infrastructure Annual Report
In 2013 DEP certified completion of three Neighborhood Demonstration Area projects and met the three 2012 CSO Consent Order milestones, oversaw the completion of four Green Infrastructure Grant projects in the Bronx, Brooklyn and Manhattan, worked with other City agencies to initiate Area-wide design and construction contracts, launched the BioswaleCare Program to support community stewardship of green infrastructure, accepted a NYC Public Design Commission Award for Excellence in Design for the first green infrastructure design standards, worked to support the extension of the NYC Green Roof Tax Abatement, and much more.
Download the report (PDF)




2012 Green Infrastructure Annual Report
During 2012, DEP released design standards for green infrastructure, promulgated new stormwater performance standards for new development and substantial redevelopment, completed construction of the first neighborhood demonstration area in East New York, oversaw the completion of grant projects at the Brooklyn Navy Yard and Queens College, initiated construction on area-wide contracts for the Flushing Bay and Bronx River drainage areas, and much more.
Download the report (PDF)




2011 Green Infrastructure Plan Update
In 2011, the City created an interagency Green Infrastructure Task Force to identify opportunities to add green infrastructure to capital projects, created an Office of Green Infrastructure within DEP, launched a Green Infrastructure Grant Program, developed design standards for green infrastructure, signed a memorandum of agreement for the maintenance of green infrastructure, and facilitated the creation of a Green Infrastructure Steering Committee comprised of community groups and other interested parties.
Download the report (PDF)




2010 NYC Green Infrastructure Plan
In September 2010, New York City released the NYC Green Infrastructure Plan which presents an alternative approach to improving water quality that integrates “green infrastructure,” such as Right-of-way Bioswales and green roofs, with investments to optimize the existing system and to build targeted, cost-effective “grey” or traditional infrastructure.
Download the report (PDF)

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