Water Quality
Water Quality > Tributary and Waterfront Data > New York City Waterfront > Brooklyn Heights- East River, Brooklyn Br Park, Pier 4 beach

Brooklyn Heights- East River, Brooklyn Br Park, Pier 4 beach

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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

199 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
09/05/2024 20 Acceptable 0.0 0.0 0.0 0.0 0.0
08/29/2024 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/22/2024 10 Acceptable 0.0 0.0 0.0 0.3 0.3
08/15/2024 98 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/08/2024 75 Beach Advisory 0.4 0.1 2.1 0.0 2.6
08/01/2024 <10 Acceptable 0.0 0.0 0.0 0.1 0.1
07/25/2024 41 Acceptable 0.0 0.0 0.1 0.0 0.1
07/18/2024 481 Beach Advisory 0.0 1.5 0.0 0.0 1.5
07/11/2024 132 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/27/2024 445 Beach Advisory 0.2 0.1 0.0 0.0 0.3
06/20/2024 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/13/2024 41 Acceptable 0.0 0.0 0.0 0.0 0.0
05/30/2024 373 Beach Advisory 0.2 0.7 0.0 1.0 1.8
05/23/2024 31 Acceptable 0.0 0.0 0.0 0.0 0.0
05/16/2024 10 Acceptable 0.3 0.3 0.0 0.0 0.6
05/09/2024 31 Acceptable 0.2 0.0 0.0 0.4 0.6
09/28/2023 10 Acceptable 0.0 0.0 0.0 0.7 0.7
09/21/2023 10 Acceptable 0.0 0.0 0.0 1.0 1.0
09/14/2023 199 Beach Advisory 0.0 0.1 0.0 1.4 1.5
08/31/2023 20 Acceptable 0.0 0.1 0.0 0.0 0.1
08/24/2023 30 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2023 246 Beach Advisory 0.0 0.8 0.8 0.0 1.6
08/10/2023 31 Acceptable 0.0 0.0 0.0 1.0 1.0
08/03/2023 15,531 Acceptable 0.0 0.0 0.0 0.0 0.0
07/27/2023 <10 Acceptable 0.0 0.0 0.3 0.0 0.3
07/20/2023 247 Beach Advisory 0.0 0.0 0.1 0.0 0.2
07/13/2023 52 Acceptable 0.0 0.0 0.0 0.0 0.0
07/06/2023 98 Beach Advisory 0.0 0.0 1.0 0.1 1.1
06/15/2023 41 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
05/18/2023 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2022 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/22/2022 199 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/15/2022 41 Acceptable 0.0 0.0 0.4 0.8 1.2
09/08/2022 30 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
08/11/2022 218 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/04/2022 20 Acceptable 0.0 0.0 0.0 0.0 0.0
07/28/2022 31 Acceptable 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 122 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/07/2022 <10 Acceptable 0.0 0.0 0.1 0.0 0.1
06/30/2022 10 Acceptable 0.0 0.0 0.0 0.3 0.3
06/23/2022 20 Acceptable 0.0 0.0 0.1 0.0 0.1
06/16/2022 52 Acceptable 0.0 0.0 0.0 0.0 0.0
06/09/2022 110 Beach Advisory 0.0 0.0 0.1 0.0 0.1
06/02/2022 216 Beach Advisory 0.0 0.7 0.0 0.0 0.7
05/26/2022 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/19/2022 148 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/30/2021 10 Acceptable 0.0 0.0 0.3 0.0 0.3
09/23/2021 10 Acceptable 1.4 0.0 0.1 0.0 1.5
09/16/2021 85 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/09/2021 84 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/02/2021 1112 Beach Advisory 0.1 7.1 0.0 0.0 7.2
08/26/2021 10 Acceptable 0.0 0.0 0.0 1.1 1.1
08/19/2021 84 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/12/2021 20 Acceptable 0.0 0.2 0.8 0.0 1.0
08/05/2021 31 Acceptable 0.0 0.0 0.0 0.0 0.0
07/29/2021 10 Acceptable 0.0 0.0 0.0 0.8 0.8
07/22/2021 464 Beach Advisory 0.0 0.1 0.0 0.0 0.1
07/15/2021 135 Beach Advisory 0.0 0.0 0.0 1.4 1.4
07/08/2021 20 Acceptable 0.0 0.0 0.6 0.0 0.6
07/01/2021 50 Acceptable 0.9 0.7 0.0 0.0 1.6
06/24/2021 10 Acceptable 0.0 0.0 0.2 0.0 0.2
06/17/2021 10 Acceptable 0.0 0.0 0.0 0.2 0.2
06/10/2021 10 Acceptable 0.0 0.0 0.5 0.1 0.6
06/03/2021 30 Acceptable 0.0 0.0 0.0 0.0 0.0
05/20/2021 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/01/2020 109 Beach Advisory 0.0 1.1 0.5 0.0 1.6
09/24/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2020 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2020 4360 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/03/2020 <10 Acceptable 0.0 0.1 0.2 0.0 0.4
08/27/2020 <10 Acceptable 0.0 0.0 0.4 0.0 0.4
08/20/2020 10 Acceptable 0.0 0.1 0.2 0.1 0.5
08/13/2020 1624 Beach Advisory 0.0 1.8 0.0 0.0 1.8
08/06/2020 10 Acceptable 0.0 0.0 0.6 0.5 1.1
07/30/2020 41 Acceptable 0.0 0.0 0.0 0.0 0.0
07/23/2020 109 Beach Advisory 0.0 1.4 0.0 0.0 1.4
07/16/2020 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2020 20 Acceptable 0.0 0.0 0.0 0.5 0.6
07/02/2020 85 Beach Advisory 0.0 0.0 0.0 0.6 0.6
06/25/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/11/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/03/2019 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/26/2019 30 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 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/05/2019 81 Beach Advisory 0.0 0.0 0.0 0.3 0.3
08/29/2019 109 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/22/2019 30 Acceptable 0.0 0.1 0.0 0.0 0.1
08/15/2019 63 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/08/2019 20 Acceptable 0.2 1.2 0.0 0.0 1.4
08/01/2019 98 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/18/2019 259 Beach Advisory 0.5 1.8 0.0 0.0 2.3
07/11/2019 <10 Acceptable 0.8 0.0 0.0 0.0 0.8
06/27/2019 10 Acceptable 0.0 0.0 0.9 0.0 0.9
06/20/2019 20 Acceptable 0.0 0.1 0.7 0.0 0.8
06/13/2019 10 Acceptable 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 95 Beach Advisory 0.0 0.8 0.2 0.0 1.0
05/23/2019 73 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/04/2018 31 Acceptable 0.0 0.0 0.7 0.0 0.7
09/27/2018 52 Acceptable 0.0 0.2 2.0 0.0 2.2
09/20/2018 41 Acceptable 0.0 0.0 1.2 0.0 1.2
09/13/2018 84 Beach Advisory 0.1 0.2 0.0 0.9 1.2
09/06/2018 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/30/2018 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2018 20 Acceptable 0.0 0.7 0.1 0.0 0.8
08/16/2018 20 Acceptable 0.0 0.8 0.7 0.0 1.5
08/09/2018 836 Beach Advisory 0.6 0.0 0.3 0.0 0.9
08/02/2018 <10 Acceptable 0.0 0.1 0.0 0.4 0.5
07/26/2018 20 Acceptable 0.0 0.7 0.0 0.2 0.9
07/19/2018 <10 Acceptable 0.0 0.0 2.2 0.0 2.2
07/12/2018 529 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/05/2018 41 Acceptable 0.0 0.0 0.0 0.0 0.0
06/28/2018 10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/21/2018 <10 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 20 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2018 228 Beach Advisory 0.0 0.3 0.3 0.0 0.6
09/28/2017 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/21/2017 199 Beach Advisory 0.0 0.0 0.2 0.0 0.2
09/14/2017 <10 Acceptable 0.0 0.1 0.0 0.0 0.1
09/07/2017 41 Acceptable 0.0 0.4 0.0 0.0 0.4
08/31/2017 98 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/24/2017 52 Acceptable 0.0 0.0 0.3 0.0 0.3
08/10/2017 10 Acceptable 0.0 0.0 0.0 0.8 0.8
07/27/2017 63 Beach Advisory 0.0 0.0 0.0 0.7 0.7
07/20/2017 529 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 85 Beach Advisory 0.0 0.0 0.0 0.5 0.5
06/22/2017 538 Beach Advisory 0.0 0.0 0.0 1.4 1.4
06/15/2017 20 Acceptable 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 20 Acceptable 0.2 0.0 0.0 0.6 0.8
05/18/2017 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 399 Beach Advisory 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 489 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 85 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/01/2016 97 Beach Advisory 0.5 0.0 0.0 0.0 0.5
08/25/2016 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/18/2016 <10 Acceptable 0.0 0.0 0.1 0.0 0.2
08/11/2016 20 Acceptable 0.2 0.1 0.0 0.0 0.2
08/04/2016 20 Acceptable 0.0 0.0 0.0 0.0 0.0
07/28/2016 148 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2016 107 Beach Advisory 0.0 0.0 0.0 0.4 0.4
07/14/2016 41 Acceptable 0.6 0.0 0.0 0.0 0.6
07/07/2016 209 Beach Advisory 0.0 0.0 0.7 0.5 1.2
06/30/2016 86 Beach Advisory 0.0 0.0 0.1 0.5 0.6
06/23/2016 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2016 311 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/09/2016 216 Beach Advisory 0.0 0.5 0.0 0.0 0.5
06/02/2016 3873 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
10/01/2015 171 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 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2015 201 Beach Advisory 1.6 0.0 0.0 0.0 1.6
09/03/2015 31 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 63 Beach Advisory 0.0 0.0 0.3 0.0 0.3
08/13/2015 10 Acceptable 0.0 0.0 1.2 0.0 1.2
08/06/2015 30 Acceptable 0.0 0.0 0.4 0.0 0.4
07/30/2015 410 Beach Advisory 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 10 Acceptable 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 134 Beach Advisory 0.0 0.0 0.3 0.6 0.8
06/11/2015 10 Acceptable 0.0 0.0 0.0 0.1 0.1
06/04/2015 75 Beach Advisory 0.0 0.0 0.4 0.7 1.1
05/28/2015 63 Beach Advisory 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 121 Beach Advisory 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 20 Acceptable 0.0 0.0 0.4 0.0 0.4
09/11/2014 94 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/04/2014 41 Acceptable 0.0 0.0 0.0 0.0 0.0
08/28/2014 51 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2014 20 Acceptable 0.4 0.0 0.0 0.0 0.4
08/07/2014 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/31/2014 30 Acceptable 0.0 0.0 0.0 0.2 0.2
07/24/2014 62 Beach Advisory 0.0 0.2 0.0 0.0 0.2
07/17/2014 86 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 473 Beach Advisory 0.0 0.1 0.4 0.0 0.5
07/01/2014 20 Acceptable 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 <10 Acceptable 0.2 0.0 0.0 0.0 0.2
06/12/2014 31 Acceptable 0.1 0.0 0.0 1.6 1.7
06/05/2014 512 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 213 Beach Advisory 0.2 0.0 0.0 0.0 0.2

Entero Count (fecal indicator) and Rainfall Correlation

199 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 city park beach and dock is owned by the NYC Parks Department, and it is the home base of the Bronx nonprofit Rocking the Boat. There is free weekend rowing in season. Site Coordinator: Sam Marquand. Site Sponsor: Rocking the Boat. These samples are processed by Rocking the Boat.

Agencies Responsible:

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

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