Water Quality
Water Quality > Tributary and Waterfront Data > New York City Waterfront > Brooklyn Navy Yard- East River, Wallabout Channel

Brooklyn Navy Yard- East River, Wallabout Channel

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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

208 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
09/21/2023 10 Acceptable 0.0 0.0 0.0 1.1 1.1
09/14/2023 <10 Acceptable 0.0 0.3 0.0 1.4 1.7
09/07/2023 86 Beach Advisory 0.0 0.2 0.0 0.0 0.2
08/24/2023 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/17/2023 884 Beach Advisory 0.0 1.0 0.7 0.0 1.6
08/17/2023 884 Beach Advisory 0.0 1.0 0.7 0.0 1.6
08/10/2023 10 Acceptable 0.0 0.0 0.0 1.0 1.0
08/10/2023 10 Acceptable 0.0 0.0 0.0 1.0 1.0
08/03/2023 109 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/03/2023 109 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/27/2023 189 Beach Advisory 0.0 0.0 0.6 0.0 0.6
07/20/2023 110 Beach Advisory 0.0 0.0 0.1 0.0 0.2
07/13/2023 41 Acceptable 0.0 0.0 0.0 0.0 0.0
07/06/2023 161 Beach Advisory 0.0 0.0 1.0 0.1 1.1
06/29/2023 20 Acceptable 0.0 0.0 0.2 0.1 0.3
06/22/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2023 52 Acceptable 0.0 0.1 0.0 0.3 0.4
06/02/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/25/2023 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2022 199 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/22/2022 52 Acceptable 0.0 0.0 0.0 0.1 0.1
09/15/2022 1267 Beach Advisory 0.0 0.0 0.4 0.8 1.2
09/08/2022 52 Acceptable 0.0 0.0 0.1 0.0 0.1
09/01/2022 <10 Acceptable 0.0 0.0 0.1 0.0 0.1
08/25/2022 <10 Acceptable 0.0 0.0 0.0 0.2 0.2
08/18/2022 10 Acceptable 0.0 0.3 0.0 0.0 0.3
08/11/2022 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/04/2022 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/28/2022 >24196 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2022 <10 Acceptable 0.0 0.0 0.0 1.9 1.9
07/14/2022 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/07/2022 20 Acceptable 0.0 0.0 0.1 0.0 0.1
06/30/2022 31 Acceptable 0.0 0.0 0.0 0.3 0.3
06/23/2022 73 Beach Advisory 0.0 0.0 0.1 0.0 0.1
06/16/2022 131 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/09/2022 >24196 Beach Advisory 0.0 0.0 0.1 0.0 0.1
06/02/2022 >24196 Beach Advisory 0.0 0.7 0.0 0.0 0.7
05/26/2022 31 Acceptable 0.0 0.0 0.0 0.0 0.0
05/19/2022 >24196 Beach Advisory 0.0 0.0 0.0 0.1 0.1
10/01/2020 201 Beach Advisory 0.0 1.1 0.5 0.0 1.6
09/24/2020 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2020 52 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2020 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/03/2020 30 Acceptable 0.0 0.1 0.2 0.0 0.4
08/27/2020 644 Beach Advisory 0.0 0.0 0.4 0.0 0.4
08/20/2020 75 Beach Advisory 0.0 0.1 0.2 0.1 0.5
08/13/2020 1594 Beach Advisory 0.0 1.8 0.0 0.0 1.8
08/06/2020 97 Beach Advisory 0.0 0.0 0.6 0.5 1.1
07/30/2020 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/23/2020 3282 Beach Advisory 0.0 1.4 0.0 0.0 1.4
07/16/2020 86 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/09/2020 10 Acceptable 0.0 0.0 0.0 0.5 0.6
07/02/2020 588 Beach Advisory 0.0 0.0 0.0 0.6 0.6
06/25/2020 20 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2020 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/11/2020 86 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/04/2020 332 Beach Advisory 0.0 0.5 0.0 0.0 0.5
10/03/2019 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/26/2019 <10 Acceptable 0.0 0.0 0.1 0.0 0.1
09/19/2019 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2019 96 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/05/2019 1274 Beach Advisory 0.0 0.0 0.0 0.3 0.3
08/29/2019 63 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/22/2019 5172 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/15/2019 820 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/08/2019 19863 Beach Advisory 0.2 1.2 0.0 0.0 1.4
08/01/2019 160 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/18/2019 >24196 Beach Advisory 0.5 1.8 0.0 0.0 2.3
07/11/2019 52 Acceptable 0.8 0.0 0.0 0.0 0.8
06/27/2019 279 Beach Advisory 0.0 0.0 0.9 0.0 0.9
06/20/2019 204 Beach Advisory 0.0 0.1 0.7 0.0 0.8
06/13/2019 >24195 Beach Advisory 0.0 0.0 0.5 0.6 1.1
06/06/2019 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/30/2019 >24196 Beach Advisory 0.0 0.8 0.2 0.0 1.0
05/23/2019 110 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/04/2018 318 Beach Advisory 0.0 0.0 0.7 0.0 0.7
09/27/2018 41 Acceptable 0.0 0.2 2.0 0.0 2.2
09/20/2018 145 Beach Advisory 0.0 0.0 1.2 0.0 1.2
09/13/2018 >24196 Beach Advisory 0.1 0.2 0.0 0.9 1.2
09/06/2018 41 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2018 75 Beach Advisory 0.0 0.7 0.1 0.0 0.8
08/16/2018 75 Beach Advisory 0.0 0.8 0.7 0.0 1.5
08/09/2018 >24196 Beach Advisory 0.6 0.0 0.3 0.0 0.9
08/02/2018 20 Acceptable 0.0 0.1 0.0 0.4 0.5
07/26/2018 10 Acceptable 0.0 0.7 0.0 0.2 0.9
07/19/2018 422 Beach Advisory 0.0 0.0 2.2 0.0 2.2
07/12/2018 20 Acceptable 0.0 0.0 0.0 0.0 0.0
07/05/2018 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/28/2018 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/21/2018 31 Acceptable 0.0 0.1 0.1 0.1 0.2
06/14/2018 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/07/2018 <10 Acceptable 0.0 0.0 0.0 0.2 0.2
05/31/2018 41 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2018 <10 Acceptable 0.0 0.3 0.3 0.0 0.6
09/28/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/21/2017 20 Acceptable 0.0 0.0 0.2 0.0 0.2
09/14/2017 75 Beach Advisory 0.0 0.1 0.0 0.0 0.1
09/07/2017 121 Beach Advisory 0.0 0.4 0.0 0.0 0.4
08/24/2017 10 Acceptable 0.0 0.0 0.3 0.0 0.3
08/17/2017 10 Acceptable 0.0 0.0 0.5 0.0 0.5
08/10/2017 354 Beach Advisory 0.0 0.0 0.0 0.8 0.8
07/27/2017 74 Beach Advisory 0.0 0.0 0.0 0.7 0.7
07/20/2017 96 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/13/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/06/2017 31 Acceptable 0.0 0.0 0.0 0.5 0.5
06/29/2017 31 Acceptable 0.0 0.0 0.2 0.0 0.2
06/22/2017 185 Beach Advisory 0.0 0.0 0.0 1.4 1.4
06/15/2017 249 Beach Advisory 0.0 0.3 0.0 0.0 0.3
06/08/2017 <10 Acceptable 0.0 0.0 0.1 0.0 0.1
06/01/2017 <10 Acceptable 0.0 0.0 0.1 0.1 0.2
05/25/2017 84 Beach Advisory 0.1 0.0 0.0 0.6 0.7
05/18/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 52 Acceptable 0.0 0.0 0.2 0.0 0.2
09/22/2016 <10 Acceptable 0.0 0.0 0.0 0.7 0.7
09/15/2016 >24196 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 109 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/01/2016 75 Beach Advisory 0.5 0.0 0.0 0.0 0.5
08/25/2016 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2016 201 Beach Advisory 0.0 0.0 0.1 0.0 0.2
08/11/2016 31 Acceptable 0.2 0.1 0.0 0.0 0.2
08/04/2016 98 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2016 554 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2016 <10 Acceptable 0.0 0.0 0.0 0.4 0.4
07/14/2016 75 Beach Advisory 0.6 0.0 0.0 0.0 0.6
07/07/2016 121 Beach Advisory 0.0 0.0 0.7 0.5 1.2
06/30/2016 884 Beach Advisory 0.0 0.0 0.1 0.5 0.6
06/23/2016 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2016 148 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/09/2016 17329 Beach Advisory 0.0 0.5 0.0 0.0 0.5
06/02/2016 86 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 132 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/01/2015 1281 Beach Advisory 0.1 1.3 0.1 0.0 1.5
09/24/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2015 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2015 10 Acceptable 1.6 0.0 0.0 0.0 1.6
09/03/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/27/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2015 <10 Acceptable 0.0 0.0 0.3 0.0 0.3
08/13/2015 63 Beach Advisory 0.0 0.0 1.2 0.0 1.2
08/06/2015 10 Acceptable 0.0 0.0 0.4 0.0 0.4
07/30/2015 <10 Acceptable 2.0 0.0 0.0 0.4 2.3
07/23/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/16/2015 >24196 Beach Advisory 0.0 0.1 0.4 0.0 0.5
06/25/2015 10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2015 74 Beach Advisory 0.0 0.0 0.3 0.6 0.8
06/11/2015 75 Beach Advisory 0.0 0.0 0.0 0.1 0.1
06/04/2015 31 Acceptable 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 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/02/2014 110 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/25/2014 52 Acceptable 0.3 0.0 0.0 0.0 0.3
09/18/2014 41 Acceptable 0.0 0.0 0.4 0.0 0.4
09/11/2014 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/04/2014 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/28/2014 <10 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 2809 Beach Advisory 0.0 0.5 0.2 0.0 0.7
08/07/2014 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/31/2014 <10 Acceptable 0.0 0.0 0.0 0.2 0.2
07/24/2014 10 Acceptable 0.0 0.2 0.0 0.0 0.2
07/17/2014 203 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 75 Beach Advisory 0.0 0.1 0.4 0.0 0.5
07/01/2014 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/26/2014 10 Acceptable 0.1 0.1 0.0 0.0 0.2
06/19/2014 345 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/12/2014 228 Beach Advisory 0.1 0.0 0.0 1.6 1.7
06/05/2014 >24196 Beach Advisory 0.9 0.0 0.1 0.0 1.0
05/29/2014 20 Acceptable 0.0 0.0 0.0 0.0 0.0
05/22/2014 20 Acceptable 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 148 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/19/2013 169 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/12/2013 10 Acceptable 1.6 0.0 0.0 0.0 1.6
09/05/2013 10 Acceptable 0.0 0.0 0.0 0.1 0.1
08/29/2013 10 Acceptable 0.0 0.4 0.0 0.0 0.5
08/22/2013 30 Acceptable 0.3 0.0 0.0 0.0 0.3
08/15/2013 97 Beach Advisory 0.0 0.0 0.9 0.1 0.9
08/08/2013 41 Acceptable 0.5 0.0 0.0 0.0 0.5
08/01/2013 <10 Acceptable 0.7 0.0 0.0 0.0 0.7
07/25/2013 <10 Acceptable 0.0 0.0 0.3 0.1 0.4
07/18/2013 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/11/2013 158 Beach Advisory 0.0 0.0 0.2 0.2 0.5
07/02/2013 457 Beach Advisory 0.1 0.8 0.0 0.0 0.9
06/27/2013 41 Acceptable 0.2 0.1 0.0 0.0 0.3
06/20/2013 41 Acceptable 0.0 0.0 0.2 0.0 0.2
06/13/2013 355 Beach Advisory 1.3 0.0 0.1 1.4 2.7
06/06/2013 63 Beach Advisory 0.1 0.0 0.0 0.9 1.0
05/30/2013 216 Beach Advisory 0.0 0.0 0.5 0.0 0.5
05/23/2013 31 Acceptable 1.8 0.0 0.0 0.0 1.8
09/27/2012 10 Acceptable 0.1 0.0 0.0 0.0 0.1
09/20/2012 313 Beach Advisory 0.0 0.0 1.5 0.0 1.5
09/13/2012 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/06/2012 63 Beach Advisory 0.0 0.1 0.1 0.0 0.2
08/30/2012 109 Beach Advisory 0.0 0.0 0.1 0.6 0.8
08/09/2012 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/02/2012 41 Acceptable 0.0 0.6 0.0 0.0 0.6
07/26/2012 >24196 Beach Advisory 0.6 0.0 0.0 0.2 0.8
07/19/2012 11119 Beach Advisory 0.0 1.8 0.0 0.0 1.8
06/28/2012 51 Acceptable 0.0 0.0 0.0 0.2 0.2
06/21/2012 110 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/14/2012 10 Acceptable 0.0 0.3 1.0 0.0 1.4
06/07/2012 <10 Acceptable 0.0 0.0 0.0 0.2 0.2
05/24/2012 317 Beach Advisory 1.0 0.0 0.2 1.4 2.6
12/01/2011 39 Acceptable 0.0 0.0 0.5 0.0 0.5
11/21/2011 18 Acceptable 0.1 0.0 0.0 0.0 0.1
11/09/2011 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/20/2011 33 Acceptable 0.0 1.1 0.0 0.0 1.1

Entero Count (fecal indicator) and Rainfall Correlation

208 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 site is no longer actively sampled. Site Coordinator: Rebecca Gibson

Agencies Responsible:

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

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