Water Quality
Water Quality > Tributary and Waterfront Data > New York City Waterfront > Randall’s Island- Bronx Kill, east landing

Randall’s Island- Bronx Kill, east landing

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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

107 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
10/03/2019 2,495 Acceptable 0.0 0.0 0.0 0.0 0.0
09/19/2019 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2019 281 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/05/2019 41 Acceptable 0.0 0.0 0.0 0.3 0.3
08/29/2019 93 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/22/2019 31 Acceptable 0.0 0.1 0.0 0.0 0.1
08/15/2019 158 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/08/2019 624 Beach Advisory 0.2 1.2 0.0 0.0 1.4
08/01/2019 2809 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 98 Beach Advisory 0.8 0.0 0.0 0.0 0.8
06/20/2019 73 Beach Advisory 0.0 0.1 0.7 0.0 0.8
06/13/2019 74 Beach Advisory 0.0 0.0 0.5 0.6 1.1
06/06/2019 135 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/30/2019 399 Beach Advisory 0.0 0.8 0.2 0.0 1.0
05/23/2019 934 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/04/2018 985 Beach Advisory 0.0 0.0 0.7 0.0 0.7
09/27/2018 3441 Beach Advisory 0.0 0.2 2.0 0.0 2.2
09/20/2018 1162 Beach Advisory 0.0 0.0 1.2 0.0 1.2
09/13/2018 195 Beach Advisory 0.1 0.2 0.0 0.9 1.2
09/06/2018 107 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/30/2018 70 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/23/2018 2489 Beach Advisory 0.0 0.7 0.1 0.0 0.8
08/16/2018 2489 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 3255 Beach Advisory 0.0 0.1 0.0 0.4 0.5
07/26/2018 3968 Beach Advisory 0.0 0.7 0.0 0.2 0.9
07/19/2018 31 Acceptable 0.0 0.0 2.2 0.0 2.2
07/12/2018 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/05/2018 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/28/2018 8664 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/21/2018 1467 Beach Advisory 0.0 0.1 0.1 0.1 0.2
06/14/2018 160 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/31/2018 30 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2018 31 Acceptable 0.0 0.3 0.3 0.0 0.6
09/28/2017 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/21/2017 399 Beach Advisory 0.0 0.0 0.2 0.0 0.2
09/14/2017 1222 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/31/2017 272 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/24/2017 6893 Beach Advisory 0.0 0.0 0.3 0.0 0.3
08/17/2017 226 Beach Advisory 0.0 0.0 0.5 0.0 0.5
07/27/2017 1842 Beach Advisory 0.0 0.0 0.0 0.7 0.7
07/20/2017 723 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/13/2017 933 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/06/2017 119 Beach Advisory 0.0 0.0 0.0 0.5 0.5
06/29/2017 106 Beach Advisory 0.0 0.0 0.2 0.0 0.2
06/22/2017 1127 Beach Advisory 0.0 0.0 0.0 1.4 1.4
06/15/2017 86 Beach Advisory 0.0 0.3 0.0 0.0 0.3
06/08/2017 291 Beach Advisory 0.0 0.0 0.1 0.0 0.1
06/01/2017 52 Acceptable 0.0 0.0 0.1 0.1 0.2
05/25/2017 246 Beach Advisory 0.1 0.0 0.0 0.6 0.8
05/18/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 121 Beach Advisory 0.0 0.0 0.2 0.0 0.2
09/22/2016 20 Acceptable 0.0 0.0 0.0 0.7 0.7
09/15/2016 238 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/01/2016 95 Beach Advisory 0.5 0.0 0.0 0.0 0.5
08/25/2016 41 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2016 72 Beach Advisory 0.0 0.0 0.1 0.0 0.2
08/11/2016 663 Beach Advisory 0.2 0.1 0.0 0.0 0.2
08/04/2016 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/28/2016 183 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2016 155 Beach Advisory 0.0 0.0 0.0 0.4 0.4
07/14/2016 30 Acceptable 0.6 0.0 0.0 0.0 0.6
07/07/2016 169 Beach Advisory 0.0 0.0 0.7 0.5 1.2
06/30/2016 <10 Acceptable 0.0 0.0 0.1 0.5 0.6
06/23/2016 31 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2016 153 Beach Advisory 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 146 Beach Advisory 0.0 0.0 0.0 1.7 1.7
05/26/2016 52 Acceptable 0.0 0.0 0.2 0.0 0.2
05/19/2016 30 Acceptable 0.0 0.0 0.0 0.0 0.0
10/01/2015 86 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 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2015 >24196 Beach Advisory 1.6 0.0 0.0 0.0 1.6
09/03/2015 41 Acceptable 0.0 0.0 0.0 0.0 0.0
08/27/2015 31 Acceptable 0.0 0.0 0.0 0.0 0.0
08/13/2015 20 Acceptable 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 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 <10 Acceptable 0.0 0.1 0.4 0.0 0.5
07/09/2015 10 Acceptable 0.3 0.0 0.1 0.0 0.4
07/01/2015 2489 Beach Advisory 0.4 0.0 0.0 0.3 0.7
06/25/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2015 63 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 30 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 52 Acceptable 0.0 0.0 0.0 0.0 0.0
10/02/2014 185 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/25/2014 246 Beach Advisory 0.3 0.0 0.0 0.0 0.3
08/28/2014 839 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/21/2014 52 Acceptable 0.4 0.0 0.0 0.0 0.4
08/14/2014 246 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 109 Beach Advisory 0.0 0.0 0.0 0.2 0.2
07/24/2014 216 Beach Advisory 0.0 0.2 0.0 0.0 0.2
07/17/2014 211 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 213 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 15531 Beach Advisory 0.1 0.1 0.0 0.0 0.2
06/19/2014 132 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/12/2014 275 Beach Advisory 0.1 0.0 0.0 1.6 1.7
06/05/2014 1396 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

Entero Count (fecal indicator) and Rainfall Correlation

107 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 public launch, a small kayak dock at the end of a long gangway, is part of the New York City Water Trail. Site Coordinator: Ira Gershonson. These samples are processed by Columbia University/Lamont-Doherty Earth Observatory (Wade McGillis).

Agencies Responsible:

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

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