The Gowanus Canal Conservancy is a nonprofit conservancy founded in 2009 that serves as a community-based environmental steward of the Gowanus Canal. Partnering with the EPA, the city Department of Environmental Protection (NYCDEP), groups like Riverkeeper and universities as diverse as Brooklyn Law School, SUNY Environmental Science and Forestry at Syracuse, and Rutgers, it seeks to improve the canal's water quality while promoting local green spaces and building habitats for the fauna that live in or near the waterway.
Twenty to 40 volunteers turn up for the events that the conservancy organizes. There are monthly composting events using compost culled at the city's many Greenmarkets.
References
Gowanus Canal Conservancy Wikipedia(Text) CC BY-SA