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Water Quality > Tributary and Waterfront Data > New York City Waterfront > Dumbo- East River, Main Street beach

Dumbo- East River, Main Street 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

188 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 367 Beach Advisory 0.0 0.0 0.0 1.2 1.2
08/24/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2023 10 Acceptable 0.0 1.0 0.7 0.0 1.6
08/17/2023 10 Acceptable 0.0 1.0 0.7 0.0 1.6
08/10/2023 20 Acceptable 0.0 0.0 0.0 1.0 1.0
08/10/2023 20 Acceptable 0.0 0.0 0.0 1.0 1.0
08/03/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/03/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/27/2023 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/20/2023 20 Acceptable 0.0 0.0 0.1 0.0 0.2
07/13/2023 31 Acceptable 0.0 0.0 0.0 0.0 0.0
07/06/2023 <10 Acceptable 0.0 0.0 1.0 0.1 1.1
06/29/2023 <10 Acceptable 0.0 0.0 0.2 0.1 0.3
06/22/2023 31 Acceptable 0.0 0.0 0.0 0.0 0.0
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 84 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/15/2022 30 Acceptable 0.0 0.0 0.4 0.8 1.2
09/08/2022 63 Beach Advisory 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 161 Beach Advisory 0.0 0.3 0.0 0.0 0.3
08/11/2022 <10 Acceptable 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 110 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2022 95 Beach Advisory 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 63 Beach Advisory 0.0 0.0 0.1 0.0 0.1
10/01/2020 97 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 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2020 1178 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
08/13/2020 377 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 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/23/2020 121 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 10 Acceptable 0.0 0.0 0.0 0.6 0.6
06/11/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/03/2019 86 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 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/05/2019 <10 Acceptable 0.0 0.0 0.0 0.3 0.3
08/29/2019 <10 Acceptable 0.0 0.1 0.0 0.0 0.1
08/22/2019 40 Acceptable 0.0 0.1 0.0 0.0 0.1
08/15/2019 10 Acceptable 0.0 0.0 0.1 0.0 0.1
08/08/2019 135 Beach Advisory 0.2 1.2 0.0 0.0 1.4
08/01/2019 246 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/18/2019 265 Beach Advisory 0.5 1.8 0.0 0.0 2.3
07/11/2019 175 Beach Advisory 0.8 0.0 0.0 0.0 0.8
06/27/2019 20 Acceptable 0.0 0.0 0.9 0.0 0.9
06/20/2019 63 Beach Advisory 0.0 0.1 0.7 0.0 0.8
06/13/2019 86 Beach Advisory 0.0 0.0 0.5 0.6 1.1
06/06/2019 20 Acceptable 0.0 0.0 0.0 0.0 0.0
05/30/2019 109 Beach Advisory 0.0 0.8 0.2 0.0 1.0
05/23/2019 235 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/04/2018 10 Acceptable 0.0 0.0 0.7 0.0 0.7
09/27/2018 31 Acceptable 0.0 0.2 2.0 0.0 2.2
09/20/2018 301 Beach Advisory 0.0 0.0 1.2 0.0 1.2
09/13/2018 63 Beach Advisory 0.1 0.2 0.0 0.9 1.2
08/30/2018 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2018 60 Acceptable 0.0 0.7 0.1 0.0 0.8
08/16/2018 60 Acceptable 0.0 0.8 0.7 0.0 1.5
08/09/2018 20 Acceptable 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 195 Beach Advisory 0.0 0.7 0.0 0.2 0.9
07/19/2018 110 Beach Advisory 0.0 0.0 2.2 0.0 2.2
07/12/2018 288 Beach Advisory 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 73 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 31 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 10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2018 206 Beach Advisory 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 30 Acceptable 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 74 Beach Advisory 0.0 0.4 0.0 0.0 0.4
08/31/2017 20 Acceptable 0.0 0.0 0.1 0.0 0.1
08/24/2017 41 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 10 Acceptable 0.0 0.0 0.0 0.8 0.8
08/03/2017 63 Beach Advisory 0.0 0.1 0.0 0.0 0.1
07/27/2017 51 Acceptable 0.0 0.0 0.0 0.7 0.7
07/20/2017 10 Acceptable 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 <10 Acceptable 0.0 0.0 0.0 0.5 0.5
06/29/2017 20 Acceptable 0.0 0.0 0.2 0.0 0.2
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 41 Acceptable 0.2 0.0 0.0 0.6 0.9
05/18/2017 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 1517 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 63 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/01/2016 295 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 52 Acceptable 0.0 0.0 0.1 0.0 0.2
08/11/2016 10 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 10 Acceptable 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 10 Acceptable 0.6 0.0 0.0 0.0 0.6
07/07/2016 <10 Acceptable 0.0 0.0 0.7 0.5 1.2
06/30/2016 20 Acceptable 0.0 0.0 0.1 0.5 0.6
06/23/2016 20 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2016 41 Acceptable 0.2 0.0 0.0 0.0 0.2
06/09/2016 63 Beach Advisory 0.0 0.5 0.0 0.0 0.5
06/02/2016 63 Beach Advisory 0.0 0.0 0.0 1.7 1.7
05/26/2016 528 Beach Advisory 0.0 0.0 0.2 0.0 0.2
05/19/2016 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/01/2015 109 Beach Advisory 0.1 1.3 0.1 0.0 1.5
09/24/2015 20 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 30 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 20 Acceptable 0.0 0.0 0.3 0.0 0.3
08/13/2015 41 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 31 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 216 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 20 Acceptable 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 259 Beach Advisory 0.0 0.0 0.4 0.7 1.1
05/28/2015 199 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 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/25/2014 62 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/18/2014 31 Acceptable 0.0 0.0 0.4 0.0 0.4
09/11/2014 41 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 10 Acceptable 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 20 Acceptable 0.0 0.0 0.0 0.2 0.2
07/24/2014 213 Beach Advisory 0.0 0.2 0.0 0.0 0.2
07/17/2014 75 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 30 Acceptable 0.0 0.1 0.4 0.0 0.5
07/02/2014 20 Acceptable 1.0 0.0 0.0 0.0 1.0
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 373 Beach Advisory 0.1 0.0 0.0 1.6 1.7
06/05/2014 31 Acceptable 0.9 0.0 0.1 0.0 1.0
05/29/2014 10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/22/2014 187 Beach Advisory 0.2 0.0 0.0 0.0 0.2
10/03/2013 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/26/2013 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/19/2013 20 Acceptable 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 591 Beach Advisory 0.0 0.4 0.0 0.0 0.5
08/22/2013 168 Beach Advisory 0.3 0.0 0.0 0.0 0.3
08/15/2013 63 Beach Advisory 0.0 0.0 0.9 0.1 0.9
08/08/2013 226 Beach Advisory 0.5 0.0 0.0 0.0 0.5
08/01/2013 20 Acceptable 0.7 0.0 0.0 0.0 0.7
07/25/2013 85 Beach Advisory 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 181 Beach Advisory 0.0 0.0 0.2 0.2 0.5
07/02/2013 253 Beach Advisory 0.1 0.8 0.0 0.0 0.9
06/27/2013 156 Beach Advisory 0.2 0.1 0.0 0.0 0.3
06/20/2013 337 Beach Advisory 0.0 0.0 0.2 0.0 0.2
06/13/2013 20 Acceptable 1.3 0.0 0.1 1.4 2.7
06/06/2013 84 Beach Advisory 0.1 0.0 0.0 0.9 1.0
05/30/2013 30 Acceptable 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 31 Acceptable 0.1 0.0 0.0 0.0 0.1
09/20/2012 86 Beach Advisory 0.0 0.0 1.5 0.0 1.5
09/06/2012 20 Acceptable 0.0 0.1 0.1 0.0 0.2
08/30/2012 20 Acceptable 0.0 0.0 0.1 0.6 0.8
08/23/2012 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/02/2012 31 Acceptable 0.0 0.6 0.0 0.0 0.6
07/26/2012 20 Acceptable 0.6 0.0 0.0 0.2 0.8
07/19/2012 228 Beach Advisory 0.0 1.8 0.0 0.0 1.8
07/05/2012 10 Acceptable 0.0 0.1 0.0 0.0 0.1

Entero Count (fecal indicator) and Rainfall Correlation

188 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

Agencies Responsible:

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

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