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

Gowanus- Gowanus Canal, 2nd Street boat launch

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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

73 Samples taken

Sample Date [i] Enterococcus Count
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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
10/01/2015 1267 Beach Advisory 0.1 1.3 0.1 0.0 1.5
09/24/2015 1439 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/17/2015 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2015 1274 Beach Advisory 1.6 0.0 0.0 0.0 1.6
09/03/2015 20 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2015 448 Beach Advisory 0.0 0.0 0.3 0.0 0.3
08/13/2015 794 Beach Advisory 0.0 0.0 1.2 0.0 1.2
07/30/2015 520 Beach Advisory 2.0 0.0 0.0 0.4 2.3
07/23/2015 74 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/16/2015 19863 Beach Advisory 0.0 0.1 0.4 0.0 0.5
06/25/2015 97 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/18/2015 301 Beach Advisory 0.0 0.0 0.3 0.6 0.8
06/11/2015 246 Beach Advisory 0.0 0.0 0.0 0.1 0.1
06/04/2015 281 Beach Advisory 0.0 0.0 0.4 0.7 1.1
05/28/2015 10 Acceptable 0.0 0.1 0.0 0.0 0.1
05/21/2015 20 Acceptable 0.0 0.0 0.0 0.0 0.0
10/02/2014 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/25/2014 10 Acceptable 0.3 0.0 0.0 0.0 0.3
09/18/2014 98 Beach Advisory 0.0 0.0 0.4 0.0 0.4
09/11/2014 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/04/2014 20 Acceptable 0.0 0.0 0.0 0.0 0.0
08/28/2014 52 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2014 <10 Acceptable 0.4 0.0 0.0 0.0 0.4
08/14/2014 158 Beach Advisory 0.0 0.5 0.2 0.0 0.7
08/07/2014 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/31/2014 52 Acceptable 0.0 0.0 0.0 0.2 0.2
07/24/2014 122 Beach Advisory 0.0 0.2 0.0 0.0 0.2
07/17/2014 987 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 624 Beach Advisory 0.0 0.1 0.4 0.0 0.5
07/02/2014 <10 Acceptable 1.0 0.0 0.0 0.0 1.0
06/26/2014 52 Acceptable 0.1 0.1 0.0 0.0 0.2
06/19/2014 341 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/12/2014 171 Beach Advisory 0.1 0.0 0.0 1.6 1.7
06/05/2014 96 Beach Advisory 0.9 0.0 0.1 0.0 1.0
05/29/2014 160 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/22/2014 >24196 Beach Advisory 0.2 0.0 0.0 0.0 0.2
10/03/2013 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/26/2013 727 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/19/2013 86 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/12/2013 52 Acceptable 1.6 0.0 0.0 0.0 1.6
09/05/2013 31 Acceptable 0.0 0.0 0.0 0.1 0.1
08/29/2013 73 Beach Advisory 0.0 0.4 0.0 0.0 0.5
08/22/2013 512 Beach Advisory 0.3 0.0 0.0 0.0 0.3
08/15/2013 2382 Beach Advisory 0.0 0.0 0.9 0.1 0.9
08/08/2013 2987 Beach Advisory 0.5 0.0 0.0 0.0 0.5
08/01/2013 75 Beach Advisory 0.7 0.0 0.0 0.0 0.7
07/25/2013 238 Beach Advisory 0.0 0.0 0.3 0.1 0.4
07/18/2013 1198 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/11/2013 >24196 Beach Advisory 0.0 0.0 0.2 0.2 0.5
07/02/2013 >24196 Beach Advisory 0.1 0.8 0.0 0.0 0.9
06/27/2013 1281 Beach Advisory 0.2 0.1 0.0 0.0 0.3
06/20/2013 6131 Beach Advisory 0.0 0.0 0.2 0.0 0.2
06/13/2013 3654 Beach Advisory 1.3 0.0 0.1 1.4 2.7
06/06/2013 1124 Beach Advisory 0.1 0.0 0.0 0.9 1.0
05/30/2013 11199 Beach Advisory 0.0 0.0 0.5 0.0 0.5
05/23/2013 173 Beach Advisory 1.8 0.0 0.0 0.0 1.8
09/27/2012 74 Beach Advisory 0.1 0.0 0.0 0.0 0.1
09/20/2012 2481 Beach Advisory 0.0 0.0 1.5 0.0 1.5
09/13/2012 203 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/06/2012 238 Beach Advisory 0.0 0.1 0.1 0.0 0.2
08/23/2012 110 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/16/2012 >24196 Beach Advisory 0.0 0.6 0.0 0.0 0.6
08/09/2012 323 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/02/2012 5794 Beach Advisory 0.0 0.6 0.0 0.0 0.6
07/26/2012 52 Acceptable 0.6 0.0 0.0 0.2 0.8
07/19/2012 173 Beach Advisory 0.0 1.8 0.0 0.0 1.8
07/12/2012 41 Acceptable 0.0 0.0 0.0 0.0 0.0
07/05/2012 1722 Beach Advisory 0.0 0.1 0.0 0.0 0.1
06/21/2012 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/14/2012 4106 Beach Advisory 0.0 0.3 1.0 0.0 1.4
05/31/2012 816 Beach Advisory 0.0 0.0 0.2 0.0 0.2
05/24/2012 10 Acceptable 1.0 0.0 0.2 1.4 2.6
05/17/2012 391 Beach Advisory 0.0 0.1 0.5 0.0 0.6

Entero Count (fecal indicator) and Rainfall Correlation

73 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:

This marina is the home base of the Empire Dragon Boat Team NYC. There are major CSO outfalls at this location. Site coordinator: Josephine Pho. Site sponsor: Empire Dragon Boat Team NYC. 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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