The Battery mid-channel

The Battery midchannel

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

76 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
10/15/201710Acceptable0.00.10.00.10.2
09/10/2017<10Acceptable0.00.00.00.00.0
08/13/2017<10Acceptable0.00.10.00.00.1
07/09/2017<10Acceptable0.00.01.80.01.8
06/11/2017<10Acceptable0.00.00.00.00.0
05/14/201710Acceptable0.01.60.00.01.6
04/04/2017216Beach Advisory1.20.00.00.01.2
10/12/2016<10Acceptable0.00.00.00.60.6
09/13/2016<10Acceptable0.00.00.00.00.0
08/14/2016<10Acceptable0.00.00.30.20.5
07/12/201610Acceptable0.00.00.00.50.5
06/14/2016<10Acceptable0.00.00.00.00.0
05/19/2016<10Acceptable0.00.00.00.00.0
10/11/2015<10Acceptable0.00.00.90.00.9
09/10/2015108Beach Advisory1.60.00.00.01.6
08/11/2015288Beach Advisory1.20.00.00.01.2
07/07/2015<10Acceptable0.10.00.00.00.1
06/10/2015<10Acceptable0.00.00.10.00.1
05/11/2015<10Acceptable0.00.00.00.00.0
10/12/2014<10Acceptable0.00.30.00.00.3
09/07/2014<10Acceptable0.00.10.00.00.1
08/11/2014<10Acceptable0.00.00.00.00.0
07/07/2014<10Acceptable0.00.00.00.10.1
06/12/201420Acceptable0.00.00.01.61.6
05/12/201410Acceptable0.00.00.40.00.4
10/16/2013<10Acceptable0.00.00.00.00.0
09/18/2013<10Acceptable0.00.00.00.00.0
08/14/201352Acceptable0.00.90.10.01.0
07/17/2013<10Acceptable0.00.00.00.00.0
06/19/201320Acceptable0.00.20.00.00.2
05/31/2013<10Acceptable0.00.00.00.50.5
11/08/201286Beach Advisory0.11.10.00.01.2
10/10/201241Acceptable0.30.00.00.20.5
09/10/201210Acceptable0.00.00.40.00.4
08/13/2012<10Acceptable0.00.00.00.20.2
07/16/2012<10Acceptable0.00.30.00.00.3
06/11/2012<10Acceptable0.00.00.00.00.0
05/15/2012<10Acceptable0.50.00.00.00.5
10/21/201163Beach Advisory0.00.01.10.01.1
09/14/2011<10Acceptable0.00.00.00.00.0
08/16/201120Acceptable0.00.65.80.06.4
07/25/2011<10Acceptable0.00.00.00.00.0
07/21/201110Acceptable0.00.00.00.10.1
07/19/2011<10Acceptable0.00.10.00.00.1
06/27/201110Acceptable0.00.00.00.00.0
05/16/201197Beach Advisory0.20.90.00.01.1
10/12/2010134Beach Advisory0.11.10.00.01.2
09/11/2010<10Acceptable0.00.00.00.00.0
08/17/2010<10Acceptable0.00.10.20.00.3
07/21/201010Acceptable0.00.00.10.00.1
06/15/2010<10Acceptable0.00.00.30.00.3
05/21/201020Acceptable0.00.00.01.11.1
10/19/200920Acceptable0.00.30.00.10.4
09/14/2009<10Acceptable0.00.00.00.80.8
08/20/2009<10Acceptable0.00.00.60.00.6
07/28/200910Acceptable0.00.61.40.02.0
06/22/200920Acceptable0.00.40.30.00.7
06/06/200952Acceptable0.00.90.50.51.9
06/05/200910Acceptable0.90.50.50.12.0
05/12/200910Acceptable0.00.00.00.60.6
10/20/2008<10Acceptable0.00.00.00.00.0
09/24/2008<10Acceptable0.00.00.00.00.0
08/19/2008<10Acceptable0.00.00.00.00.0
07/14/20085Acceptable0.50.00.00.00.5
07/02/2008<10Acceptable0.00.00.00.60.6
06/24/200847Acceptable0.00.10.10.00.2
05/19/200820Acceptable0.00.10.00.91.0
09/06/20072Acceptable0.00.00.00.00.0
08/16/2007<10Acceptable0.00.00.00.00.0
07/11/20071Acceptable1.00.00.00.01.0
06/18/2007<10Acceptable0.00.00.00.00.0
05/23/20071Acceptable0.00.00.00.00.0
04/18/2007274Beach Advisory0.00.00.97.68.5
11/10/2006107Beach Advisory0.00.03.60.03.6
10/18/2006116Beach Advisory0.01.10.00.01.1
09/26/2006<10Acceptable0.00.00.00.10.1

Entero Count (fecal indicator) and Rainfall Correlation

76 Samples taken

All Water Quality Parameters

76 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
10/15/201710Acceptable69.321.12.15.879.4
09/10/2017<10Acceptable70.621.56.7689
08/13/2017<10Acceptable74.923.16.78.182.5
07/09/2017<10Acceptable74.912.12.914.595.6
06/11/2017<10Acceptable67.812.14.211.792.4
05/14/201710Acceptable58.56.42.418.696.8
04/04/2017216Beach Advisory42.66.52.023.898.2
10/12/2016<10Acceptable6621.72.83487
09/13/2016<10Acceptable76.417.610.4n/a102
08/14/2016<10Acceptable82.615.123.526142
07/12/201610Acceptable7520.871094
06/14/2016<10Acceptable69.39.73.820100
05/19/2016<10Acceptable59.314.62.1n/a97
10/11/2015<10Acceptable65.720.43.81188
09/10/2015108Beach Advisory77.2225.41073
08/11/2015288Beach Advisory74.522.74.2884
07/07/2015<10Acceptable72.121.23.12580
06/10/2015<10Acceptable6521.93n/a84
05/11/2015<10Acceptable59.119.54.31299
10/12/2014<10Acceptable64.825.61.9582
09/07/2014<10Acceptable76.717.43.51675
08/11/2014<10Acceptable7621.10.72179
07/07/2014<10Acceptable74.612.75.61393
06/12/201420Acceptable65.716.818.220100
05/12/201410Acceptable587.52.32498
10/16/2013<10Acceptable65.123.71.2683
09/18/2013<10Acceptable67.425.43.81079
08/14/201352Acceptable73.519.73.93080
07/17/2013<10Acceptable78.81310.711093
06/19/201320Acceptable69.963.51793
05/31/2013<10Acceptable64.813.62.43587
11/08/201286Beach Advisory51.411.91.21791
10/10/201241Acceptable65.814.24.21385
09/10/201210Acceptable76.518.86.15079
08/13/2012<10Acceptable80.719.57.58109
07/16/2012<10Acceptable78.322.44.9888
06/11/2012<10Acceptable69.517.53.1n/a81
05/15/2012<10Acceptable60.88.92.13092
10/21/201163Beach Advisory62.2111.32185
09/14/2011<10Acceptable72.85.71.64381
08/16/201120Acceptable75.720.322373
07/25/2011<10Acceptable80.310.614.48114
07/21/201110Acceptablen/an/an/an/an/a
07/19/2011<10Acceptable77.719.14.814187
06/27/201110Acceptable76.24.87.53694
05/16/201197Beach Advisory5712.83.315987
10/12/2010134Beach Advisory66.216.34.6883
09/11/2010<10Acceptable70.627.47.71998
08/17/2010<10Acceptable76.821.63.1761
07/21/201010Acceptable8017.531.29105
06/15/2010<10Acceptable65.925.12.5677
05/21/201020Acceptable60.814.62.22287
10/19/200920Acceptable57.222.2n/an/a89
09/14/2009<10Acceptable7314.61.92685
08/20/2009<10Acceptable77.321.32.31468
07/28/200910Acceptable76.217.73.5876
06/22/200920Acceptable69.86.70.92080
06/06/200952Acceptablen/an/an/an/an/a
06/05/200910Acceptablen/an/an/an/an/a
05/12/200910Acceptable60.211.61.31791
10/20/2008<10Acceptable62.325.41.2283
09/24/2008<10Acceptable70.316.41.7979
08/19/2008<10Acceptable73.123.72.6680
07/14/20085Acceptable76.2154.61093
07/02/2008<10Acceptable74.117.92.51086
06/24/200847Acceptable70.520.72.7883
05/19/200820Acceptable57.516.81.21991
09/06/20072Acceptable74.4242.9478
08/16/2007<10Acceptable76.7233.31077
07/11/20071Acceptable70.823.61.91873
06/18/2007<10Acceptablen/an/an/an/an/a
05/23/20071Acceptablen/an/an/an/an/a
04/18/2007274Beach Advisory46.11.90.134100
11/10/2006107Beach Advisory53.67.913992
10/18/2006116Beach Advisory63.315.32.51083
09/26/2006<10Acceptable69.423.2n/an/a92

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:

Manhattan, NY
The deep water sample site at Battery Park has recreational boat traffic, as well as some 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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