East River mid-channel at Roosevelt Island

East River_Roosevelt Islan copy

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

72 Samples taken

Sample Date [i] Enterococcus Count

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.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
SortSortSortSortSortSortSortSort
10/16/201720Acceptable0.00.00.10.00.1
09/11/2017<10Acceptable0.00.00.00.00.0
08/14/2017<10Acceptable0.00.00.10.00.1
07/10/201710Acceptable0.00.01.80.01.8
06/12/2017<10Acceptable0.00.00.00.00.0
05/15/201741Acceptable0.00.01.60.01.6
10/13/2016<10Acceptable0.00.00.00.00.0
09/14/201610Acceptable0.00.00.00.00.0
08/15/201610Acceptable0.00.10.00.30.4
07/12/201620Acceptable0.00.00.00.50.5
06/15/2016<10Acceptable0.00.00.00.00.0
05/20/2016<10Acceptable0.00.00.00.00.0
10/12/2015<10Acceptable0.00.00.00.90.9
09/11/201574Beach Advisory0.01.60.00.01.6
08/12/201541Acceptable0.01.20.00.01.2
07/08/2015<10Acceptable0.00.10.00.00.1
06/11/2015<10Acceptable0.00.00.00.10.1
05/12/201510Acceptable0.00.00.00.00.0
10/13/2014<10Acceptable0.00.00.30.00.3
09/07/201410Acceptable0.00.10.00.00.1
08/11/2014<10Acceptable0.00.00.00.00.0
07/07/201420Acceptable0.00.00.00.10.1
06/12/201431Acceptable0.00.00.01.61.6
05/12/201420Acceptable0.00.00.40.00.4
10/16/2013<10Acceptable0.00.00.00.00.0
09/18/2013<10Acceptable0.00.00.00.00.0
08/14/2013221Beach Advisory0.00.90.10.01.0
07/17/2013<10Acceptable0.00.00.00.00.0
06/19/201341Acceptable0.00.20.00.00.2
05/31/2013<10Acceptable0.00.00.00.50.5
10/10/201263Beach Advisory0.30.00.00.20.5
09/10/201210Acceptable0.00.00.40.00.4
08/13/2012<10Acceptable0.00.00.00.20.2
07/16/201230Acceptable0.00.30.00.00.3
06/11/2012<10Acceptable0.00.00.00.00.0
05/15/201210Acceptable0.50.00.00.00.5
10/21/201184Beach Advisory0.00.01.10.01.1
09/14/201110Acceptable0.00.00.00.00.0
08/16/2011109Beach Advisory0.00.65.80.06.4
07/19/2011<10Acceptable0.00.10.00.00.1
06/27/2011<10Acceptable0.00.00.00.00.0
05/16/2011181Beach Advisory0.20.90.00.01.1
10/12/2010275Beach Advisory0.11.10.00.01.2
09/11/2010<10Acceptable0.00.00.00.00.0
08/17/201063Beach Advisory0.00.10.20.00.3
07/21/2010<10Acceptable0.00.00.10.00.1
06/15/2010<10Acceptable0.00.00.30.00.3
05/21/201010Acceptable0.00.00.01.11.1
10/19/200910Acceptable0.00.30.00.10.4
09/14/2009<10Acceptable0.00.00.00.80.8
08/20/2009<10Acceptable0.00.00.60.00.6
07/28/200952Acceptable0.00.61.40.02.0
06/22/2009<10Acceptable0.00.50.30.00.8
06/05/2009<10Acceptable0.90.50.50.12.0
05/12/200910Acceptable0.00.00.00.60.6
10/20/200810Acceptable0.00.00.00.00.0
09/24/2008<10Acceptable0.00.00.00.00.0
08/19/2008<10Acceptable0.00.00.00.00.0
07/14/2008187Beach Advisory0.50.00.00.00.5
07/02/2008<10Acceptable0.00.00.00.60.6
06/24/2008109Beach Advisory0.00.10.10.00.2
05/19/2008<10Acceptable0.00.10.00.91.0
09/06/20071Acceptable0.00.00.00.00.0
08/16/20074Acceptable0.00.00.00.00.0
07/11/20071Acceptable0.00.00.00.00.0
06/18/20078Acceptable0.00.00.00.00.0
05/23/20074Acceptable0.00.00.00.00.0
04/18/2007344Beach Advisory0.00.00.97.68.5
12/13/200630Acceptable0.20.00.00.00.2
11/10/2006112Beach Advisory0.00.03.60.03.6
10/18/2006135Beach Advisory0.01.10.00.01.1
09/26/20062Acceptable0.00.00.00.10.1

Entero Count (fecal indicator) and Rainfall Correlation

72 Samples taken

All Water Quality Parameters

72 Samples taken

Sample Date [i] Entero Count

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 [i] Temp (f)

Temperature

Hudson River water temperature changes seasonally. Surface water temperature can change on small scales in the river reflecting natural and human influences.

[i] Salinity

Salinity

Estuaries like the Hudson are where freshwaters in rivers meet the sea. Salinity tells us about the relative contribution of fresh and salt water within a particular region of the estuary. 

[i] Chlorophyll

Chlorophyll

A measure of the amount of microscopic algae present in the water. High chlorophyll counts can mean high levels of the nutrients phosphorus and nitrogen, and the threat, or presence, of algae blooms.

[i] Turbidity

Turbidity

Turbidity is a measure of the amount of fine particles suspended in the water. As turbidity rises, light penetration, a key factor for aquatic plants and algae, diminishes.

[i] Oxygen

Oxygen

Oxygen concentrations in the water are closely connected to biological activities. Surface waters are typically in equilibrium with the atmosphere such that the oxygen concentration near the surface is close to fully saturated (100%).

SortSortSortSortSortSortSortSort
10/16/201720Acceptable68.723.91.45.573.6
09/11/2017<10Acceptable69.723.52.26.870.7
08/14/2017<10Acceptable74.823.22.47.852.6
07/10/201710Acceptable70.121.01.714.777.8
06/12/2017<10Acceptable65.119.22.212.681.6
05/15/201741Acceptable55.520.22.09.183.6
10/13/2016<10Acceptable6625.12.13881
09/14/201610Acceptable75.424.34.6n/a76
08/15/201610Acceptable77.9245.22675
07/12/201620Acceptable7323.52.2865
06/15/2016<10Acceptable63.4232.31883
05/20/2016<10Acceptable55.9223.5n/a89
10/12/2015<10Acceptable65.124.121579
09/11/201574Beach Advisory76.525.54.4763
08/12/201541Acceptable74.124.72.3668
07/08/2015<10Acceptable71.123.32.61565
06/11/2015<10Acceptable64.621.92n/a70
05/12/201510Acceptable55.723.35.31591
10/13/2014<10Acceptable6524.41.6575
09/07/201410Acceptable75.924.42.71558
08/11/2014<10Acceptable74.522.61.61865
07/07/201420Acceptable71.222.11.8864
06/12/201431Acceptable64223.81577
05/12/201420Acceptable53.920.721587
10/16/2013<10Acceptable65.4251.3480
09/18/2013<10Acceptable70.425.52.92569
08/14/2013221Beach Advisory73.223.31.81954
07/17/2013<10Acceptable74.723.14.81368
06/19/201341Acceptable68.121.51.91273
05/31/2013<10Acceptable61.823.11.41173
10/10/201263Beach Advisory67.524.71.7867
09/10/201210Acceptable77.624.72.74053
08/13/2012<10Acceptable7733.70.7746
07/16/201230Acceptable74.832.72856
06/11/2012<10Acceptable68.422.92.1n/a64
05/15/201210Acceptable58.722.31.6978
10/21/201184Beach Advisory64.120.70.61277
09/14/201110Acceptable71.5141.43172
08/16/2011109Beach Advisory74.222.114257
07/19/2011<10Acceptable73.921.91.4966
06/27/2011<10Acceptable70.219.91.91157
05/16/2011181Beach Advisory55.419.44.16181
10/12/2010275Beach Advisory6621.81.41271
09/11/2010<10Acceptable71.225.82.81971
08/17/201063Beach Advisory76.826.41.9845
07/21/2010<10Acceptable76.725.41.5645
06/15/2010<10Acceptable65.723.30.51766
05/21/201010Acceptable5723.92.2877
10/19/200910Acceptable57.2250.9780
09/14/2009<10Acceptable70.924.70.93965
08/20/2009<10Acceptable76.722.122157
07/28/200952Acceptable72.923.31.11248
06/22/2009<10Acceptable6715.90.76665
06/05/2009<10Acceptablen/an/an/an/an/a
05/12/200910Acceptable56.818.70.71579
10/20/200810Acceptable62.425.30.9667
09/24/2008<10Acceptable70.425.28.8892
08/19/2008<10Acceptable73.422.41.21165
07/14/2008187Beach Advisory72.224.51.11053
07/02/2008<10Acceptable69.2241.11158
06/24/2008109Beach Advisory67.823.60.8856
05/19/2008<10Acceptable5721.70.91081
09/06/20071Acceptable74.825.51.71163
08/16/20074Acceptablen/an/an/an/an/a
07/11/20071Acceptable69.525.11.52754
06/18/20078Acceptablen/an/an/an/an/a
05/23/20074Acceptable58.923.22.510375
04/18/2007344Beach Advisory44.920.30.12796
12/13/200630Acceptable47.9211.12090
11/10/2006112Beach Advisory5517.50.81986
10/18/2006135Beach Advisory63.423.71668
09/26/20062Acceptable68.922.90.3n/a76

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 Riverkeeper, Lamont-Doherty Earth Observatory and CUNY Queens College staff, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

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:

Queens, NY
This site has boating, fishing, kayaking and occasional swim events.

The data displayed on these pages relates to the levels of sewage indicating microbes. Even though the levels on a single days can fall within acceptable levels for Enterococcus, these locations are not necessarily acceptable for swimming. Other water quality parameters not reported on this web site such as chemical contamination and floatables should cause users to exercise caution at this site.

Agencies Responsible:

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

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