Water Quality
Water Quality > Tributary and Waterfront Data > New York City Waterfront > Long Island City- East River, Gantry State Park dock

Long Island City- East River, Gantry State Park dock

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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

135 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 <10 Acceptable 0.0 0.2 0.0 0.0 0.2
08/10/2023 <10 Acceptable 0.0 0.0 0.0 0.8 0.8
08/10/2023 <10 Acceptable 0.0 0.0 0.0 0.8 0.8
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
07/20/2023 <10 Acceptable 0.0 0.0 0.4 0.0 0.4
06/15/2023 20 Acceptable 0.0 0.2 0.0 0.1 0.3
09/29/2022 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/22/2022 41 Acceptable 0.0 0.0 0.0 0.1 0.1
09/15/2022 63 Beach Advisory 0.0 0.0 0.4 0.8 1.2
09/08/2022 41 Acceptable 0.0 0.0 0.1 0.0 0.1
09/01/2022 30 Acceptable 0.0 0.0 0.1 0.0 0.1
08/25/2022 52 Acceptable 0.0 0.0 0.0 0.2 0.2
08/11/2022 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/04/2022 171 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2022 134 Beach Advisory 0.0 0.0 0.0 1.0 1.0
07/21/2022 41 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 >24196 Beach Advisory 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 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/02/2022 216 Beach Advisory 0.0 0.7 0.0 0.0 0.7
05/26/2022 20 Acceptable 0.0 0.0 0.0 0.0 0.0
05/19/2022 318 Beach Advisory 0.0 0.0 0.0 0.1 0.1
10/01/2020 85 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 199 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 52 Acceptable 0.0 0.0 0.4 0.0 0.4
08/20/2020 31 Acceptable 0.0 0.1 0.2 0.1 0.5
08/13/2020 449 Beach Advisory 0.0 1.8 0.0 0.0 1.8
08/06/2020 31 Acceptable 0.0 0.0 0.6 0.5 1.1
07/23/2020 142 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 31 Acceptable 0.0 0.0 0.0 0.5 0.6
07/02/2020 52 Acceptable 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
09/26/2019 20 Acceptable 0.0 0.0 0.1 0.0 0.1
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
08/08/2019 512 Beach Advisory 0.2 1.2 0.0 0.0 1.4
08/01/2019 74 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/18/2019 3,255 Acceptable 0.5 1.8 0.0 0.0 2.3
07/11/2019 31 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 41 Acceptable 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 197 Beach Advisory 0.0 0.8 0.2 0.0 1.0
09/13/2018 41 Acceptable 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 41 Acceptable 0.0 0.7 0.1 0.0 0.8
08/16/2018 41 Acceptable 0.0 0.8 0.7 0.0 1.5
08/09/2018 119 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 957 Beach Advisory 0.0 0.7 0.0 0.2 0.9
07/19/2018 20 Acceptable 0.0 0.0 2.2 0.0 2.2
07/05/2018 63 Beach Advisory 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 399 Beach Advisory 0.0 0.1 0.1 0.1 0.2
06/14/2018 20 Acceptable 0.0 0.0 0.0 0.0 0.0
06/07/2018 41 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
09/28/2017 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/14/2017 <10 Acceptable 0.0 0.1 0.0 0.0 0.1
09/07/2017 <10 Acceptable 0.0 0.4 0.0 0.0 0.4
08/31/2017 <10 Acceptable 0.0 0.0 0.1 0.0 0.1
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 20 Acceptable 0.0 0.1 0.0 0.0 0.1
07/27/2017 20 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 <10 Acceptable 0.0 0.0 0.2 0.0 0.2
06/22/2017 20 Acceptable 0.0 0.0 0.0 1.4 1.4
06/15/2017 10 Acceptable 0.0 0.3 0.0 0.0 0.3
06/01/2017 10 Acceptable 0.0 0.0 0.1 0.1 0.2
05/25/2017 >24196 Beach Advisory 0.8 0.0 0.0 0.6 1.5
05/18/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/15/2016 97 Beach Advisory 0.0 0.6 0.0 0.0 0.6
09/08/2016 97 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/01/2016 10 Acceptable 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
08/11/2016 <10 Acceptable 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 41 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 <10 Acceptable 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
06/09/2016 63 Beach Advisory 0.0 0.5 0.0 0.0 0.5
06/02/2016 <10 Acceptable 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 84 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/01/2015 295 Beach Advisory 0.1 1.3 0.1 0.0 1.5
09/24/2015 41 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2015 75 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2015 350 Beach Advisory 1.6 0.0 0.0 0.0 1.6
09/03/2015 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/27/2015 832 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2015 52 Acceptable 0.0 0.0 1.2 0.0 1.2
08/06/2015 41 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 31 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 85 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/18/2015 52 Acceptable 0.0 0.0 0.3 0.6 0.8
06/11/2015 20 Acceptable 0.0 0.0 0.0 0.1 0.1
06/04/2015 41 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
10/02/2014 20 Acceptable 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 20 Acceptable 0.0 0.0 0.0 0.0 0.0
09/04/2014 31 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
08/14/2014 687 Beach Advisory 0.0 0.5 0.2 0.0 0.7
08/07/2014 98 Beach Advisory 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 31 Acceptable 0.0 0.2 0.0 0.0 0.2
07/17/2014 73 Beach Advisory 0.0 0.0 1.3 0.5 1.8
07/10/2014 20 Acceptable 0.0 0.1 0.4 0.0 0.5
07/02/2014 52 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 75 Beach Advisory 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 41 Acceptable 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

135 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 cobble beach next to Valentino Pier is the home base of the Red Hook Boaters, who offer free public kayaking on weekends in season. It is also a launch site on the NYC Water Trail. Site Coordinator: Josh Vogel. Site Sponsor: Red Hook Boaters. These samples are processed by The River Project.

Agencies Responsible:

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

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