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

36 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.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
SortSortSortSortSortSortSortSort
09/28/2017<10Acceptable0.00.00.00.00.0
09/21/201710Acceptable0.00.00.20.00.2
09/14/201741Acceptable0.00.10.00.00.1
09/07/2017211Beach Advisory0.00.40.00.00.4
08/31/201720Acceptable0.00.00.30.00.3
08/17/201720Acceptable0.00.00.50.00.5
08/10/2017112Beach Advisory0.00.00.00.80.8
08/03/201785Beach Advisory0.00.10.00.00.1
07/27/201798Beach Advisory0.00.00.00.70.7
07/20/2017<10Acceptable0.00.00.00.00.0
07/13/2017122Beach Advisory0.00.00.00.00.0
07/06/201741Acceptable0.00.00.00.50.5
06/29/2017145Beach Advisory0.00.00.20.00.2
06/22/2017426Beach Advisory0.00.00.01.41.4
06/08/201710Acceptable0.00.00.10.00.1
05/25/201720Acceptable0.00.00.00.00.0
05/18/201731Acceptable0.00.00.00.00.0
09/29/2016<10Acceptable0.00.00.20.00.2
09/15/2016241Beach Advisory0.00.60.00.00.6
09/08/201631Acceptable0.00.00.00.00.0
09/01/201610Acceptable0.50.00.00.00.5
08/25/201620Acceptable0.00.00.00.00.0
08/18/201620Acceptable0.00.00.10.00.2
08/11/201674Beach Advisory0.20.10.00.00.2
08/04/2016109Beach Advisory0.00.00.00.00.0
07/28/2016161Beach Advisory0.00.00.01.01.0
07/21/2016122Beach Advisory0.00.00.00.40.4
07/14/201610Acceptable0.60.00.00.00.6
07/07/201610Acceptable0.00.00.70.51.2
06/30/2016336Beach Advisory0.00.00.10.50.6
06/23/2016161Beach Advisory0.00.00.00.00.0
06/16/2016145Beach Advisory0.20.00.00.00.2
06/09/2016199Beach Advisory0.00.50.00.91.4
06/02/2016426Beach Advisory0.00.00.01.71.7
05/26/2016<10Acceptable0.00.00.20.00.2
05/19/201652Acceptable0.00.00.00.00.0

Entero Count (fecal indicator) and Rainfall Correlation

36 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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