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San Francisco Bay Delta

Newcomb Avenue Project

Newcomb Avenue, now recognized as the greenest street in San Francisco, was completed in December 2011. The project replaced a nearly 100% impervious streetscape with LID elements, such as permeable pavement, sidewalk landscaping, trees, and stormwater planters.

  • Improved water quality through treatment of stormwater by the project's block-long implementation of LID components
  • Contribute to the understanding of LID BMP design effectiveness: The project tests the effectiveness of various BMPs and their ability to retain stormwater runoff.
  • Serve as a model for future projects in the San Francisco Bay Area: Information gathered from ongoing monitoring of this project will inform future LID projects in San Francisco and other areas around the Bay. In order to comply with new stormwater permit provisions requiring implementation of LID to protect local streams, creeks and the Bay, municipalities need project relevant information to help determine what is cost-effective in their jurisdictions.
  • Neighborhood renewal by street beautification: The project's amenities, including new plants and trees, traffic calming features, and sidewalk design will foster community pride.

More information about the Newcomb Avenue Project:

Project Facts

Recipient: San Francisco Estuary Partnership/Association of Bay Area Governments, City and County of San Francisco
Funding: EPA = $492,500; Match/leverage = $1,009,921
Project Period: February 2009 to December 2013
Partners: Architects for Humanity, San Francisco Estuary Institute

Environmental Results Summary: Newcomb Avenue Project

OUTPUTS (Activities, efforts, and/or work product during project period)

OUTCOMES (Environmental results)

(1-5 yrs)


Replaced 20,891 ft2 of concrete with new landscaping, street trees, stormwater planters and permeable pavers to allow rainwater to permeate into the ground along one block of Newcomb Ave., San Francisco

Treated 1.17 acres of impervious surface with LID

Widespread use of LID to treat polluted stormwater and enhance aquatic ecosystems

Full List of Project Summaries