Water Quality > Tributary and Waterfront Data > New York City Waterfront > Gowanus- Gowanus Canal, 2nd Street Sponge Park

Gowanus- Gowanus Canal, 2nd Street Sponge Park

Physical/Chemical Data

Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.

Entero Count (fecal indicator) and Rainfall

27 Samples taken

Sample Date [i] Enterococcus Count

Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

Quality Rain, day of (in) Prior Day 2 Days Prior 3 Days Prior Rain 4 Days Total Rain
Sort Sort Sort Sort Sort Sort Sort Sort
07/20/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/13/2017 122 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/06/2017 41 Acceptable 0.0 0.0 0.0 0.5 0.5
06/29/2017 145 Beach Advisory 0.0 0.0 0.2 0.0 0.2
06/22/2017 426 Beach Advisory 0.0 0.0 0.0 1.4 1.4
06/08/2017 10 Acceptable 0.0 0.0 0.1 0.0 0.1
05/25/2017 20 Acceptable 0.0 0.0 0.0 0.0 0.0
05/18/2017 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 <10 Acceptable 0.0 0.0 0.2 0.0 0.2
09/15/2016 241 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/01/2016 10 Acceptable 0.5 0.0 0.0 0.0 0.5
08/25/2016 20 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2016 20 Acceptable 0.0 0.0 0.1 0.0 0.2
08/11/2016 74 Beach Advisory 0.2 0.1 0.0 0.0 0.2
08/04/2016 109 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2016 161 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2016 122 Beach Advisory 0.0 0.0 0.0 0.4 0.4
07/14/2016 10 Acceptable 0.6 0.0 0.0 0.0 0.6
07/07/2016 10 Acceptable 0.0 0.0 0.7 0.5 1.2
06/30/2016 336 Beach Advisory 0.0 0.0 0.1 0.5 0.6
06/23/2016 161 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2016 145 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/09/2016 199 Beach Advisory 0.0 0.5 0.0 0.9 1.4
06/02/2016 426 Beach Advisory 0.0 0.0 0.0 1.7 1.7
05/26/2016 <10 Acceptable 0.0 0.0 0.2 0.0 0.2
05/19/2016 52 Acceptable 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

27 Samples taken

Water Quality*

Acceptable (0–60) Beach Advisory (61+)

*Single sample thresholds;
Enterococcus count per 100mL

Prior Four Day Rainfall
(in inches)

Dry Weather (0–0.25) Wet Weather (0.25+)

Enterococcus is an EPA-approved fecal contamination indicator.

Samples taken by citizen scientists and processed at laboratories that aren't directly affiliated with Riverkeeper, using methods and study designs that are consistent with Riverkeeper's Hudson River and Citizen Testing programs.

Rainfall data comes from wunderground.com. Wet weather is a common trigger of fecal contamination.

What do the Numbers Mean?

Water Quality scoring is based on the 2012 Recreational Water Quality Criteria from the US Environmental Protection Agency (EPA) for safe swimming. Learn More

About this location:

Site coordinator: Josephine Pho. Site sponsor: Empire Dragon Boat Team NYC. There are major CSO outfalls at this location. These samples are processed by Queens College (Gregory O'Mullan).

Agencies Responsible:

NYCDEP: 212-639-9675; NYSDEC Region 2: 718-482-4933

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