Water Quality > Tributary and Waterfront Data > New York City Waterfront > Gowanus- Gowanus Canal- 4th Street, Vechtes Brook

Gowanus- Gowanus Canal- 4th Street, Vechtes Brook

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

20 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
10/02/2014305Beach Advisory0.00.00.00.00.0
09/25/20141223Beach Advisory0.30.00.00.00.3
09/18/2014638Beach Advisory0.00.00.40.00.4
09/11/2014146Beach Advisory0.00.00.00.00.0
09/04/2014<10Acceptable0.00.00.00.00.0
08/28/2014158Beach Advisory0.00.00.00.00.0
08/21/2014218Beach Advisory0.40.00.00.00.4
08/14/2014759Beach Advisory0.00.50.20.00.7
08/07/201420Acceptable0.00.00.00.00.0
07/31/2014345Beach Advisory0.00.00.00.20.2
07/24/2014670Beach Advisory0.00.20.00.00.2
07/17/2014957Beach Advisory0.00.01.30.51.8
07/10/20141145Beach Advisory0.10.40.00.00.5
07/02/201452Acceptable1.00.00.00.01.0
06/26/2014520Beach Advisory0.10.10.00.00.2
06/19/20141455Beach Advisory0.20.00.00.00.2
06/12/2014504Beach Advisory0.10.00.01.61.7
06/05/20143255Beach Advisory0.90.00.10.01.0
05/29/2014754Beach Advisory0.00.00.00.00.0
05/22/20144106Beach Advisory0.20.00.00.00.2

Entero Count (fecal indicator) and Rainfall Correlation

20 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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