Each year since 2017, Gowanus Canal Conservancy holds a bioblitz, working with experts, volunteers, and students to survey and document the biodiversity thriving in and around the Gowanus Canal. On foot and canoe, the team traverses the area for a set period of time (typically from 4 to 24 hours), documenting their findings using iNaturalist, a citizen science mapping application. The bioblitzes provide yearly species inventories at a time when the canal and its banks are rapidly changing with the Superfund clean-up and new development.

Over 1,000 wildlife observations of more than 300 species have been made in the survey area, including over 200 plant species, over 35 bird species and over 20 marine life species. Visit iNaturalist to view all of our observations.

On September 7th and 8th 2019, GCC will hold its largest bioblitz yet. A collaboration with Macaulay Honors College and Greenwood Cemetery, the 2019 BioBlitz involves an entire weekend of intensive and collaborative cataloguing of the life in both Gowanus and Greenwood. Hundreds of Macaulay students will be guided by scientific experts and other knowledgeable volunteers. If you are familiar with the area around the Gowanus Canal and are interested in volunteering during this event, get in touch by emailing



Gowanus Dredgers
Brooklyn Bird Club
New York Botanical Garden
Macaulay Honors College
Greenwood Cemetery