Irvington Beach

Irvington Beach

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

61 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
10/16/2017<10Acceptable0.10.00.00.00.2
09/11/201720Acceptable0.00.00.00.00.0
08/14/2017<10Acceptable0.00.00.40.30.8
07/10/2017<10Acceptable0.00.00.02.22.2
06/12/2017<10Acceptable0.00.00.00.00.0
05/15/201710Acceptable0.00.11.70.01.8
04/04/201774Beach Advisory1.10.00.00.11.2
10/13/201610Acceptable0.10.00.00.00.1
09/14/2016<10Acceptable0.00.00.00.00.0
08/15/201610Acceptable0.00.10.10.20.4
07/13/201610Acceptable0.00.00.00.00.0
06/15/2016<10Acceptable0.00.00.00.00.0
05/20/2016<10Acceptable0.00.00.00.00.0
10/12/2015<10Acceptable0.00.00.00.10.1
09/11/201520Acceptable0.31.30.00.01.6
08/12/201510Acceptable0.01.00.00.01.0
07/08/2015<10Acceptable0.00.10.00.00.1
06/11/2015<10Acceptable0.00.00.20.20.4
05/12/2015<10Acceptable0.00.00.00.00.0
10/13/2014<10Acceptable0.00.00.40.00.4
09/08/201410Acceptable0.00.00.00.00.0
08/12/2014<10Acceptable0.00.00.00.00.0
07/08/2014<10Acceptable0.20.00.00.00.2
06/13/201410Acceptable1.40.00.10.01.5
05/13/201410Acceptable0.00.00.10.30.4
10/17/2013<10Acceptable0.00.00.00.00.0
09/19/2013<10Acceptable0.00.00.00.00.0
08/15/201310Acceptable0.00.00.70.41.1
07/18/2013<10Acceptable0.00.00.00.00.0
06/20/201310Acceptable0.00.00.30.20.5
05/30/201320Acceptable0.00.00.40.00.4
10/11/2012<10Acceptable0.00.10.00.00.1
09/11/2012<10Acceptable0.00.00.01.41.4
08/14/201210Acceptable0.00.00.00.00.0
07/17/2012<10Acceptable0.00.00.20.00.2
06/12/201210Acceptable0.00.00.00.00.0
05/16/2012<10Acceptable0.10.40.10.00.6
10/20/201152Acceptable0.00.10.00.00.1
09/15/2011464Beach Advisory0.00.00.00.00.0
08/17/2011<10Acceptable0.00.00.03.43.4
07/18/2011<10Acceptable0.00.00.00.00.0
06/28/2011<10Acceptable0.00.00.00.00.0
05/17/2011120Beach Advisory1.20.00.80.02.0
10/13/2010<10Acceptable0.00.10.30.00.4
09/12/2010<10Acceptable0.00.00.00.00.0
08/18/201010Acceptable0.00.00.20.30.5
07/22/201031Acceptable0.00.10.01.41.5
06/16/2010<10Acceptable0.00.00.00.00.0
05/22/201020Acceptable0.00.00.00.00.0
10/20/200910Acceptable0.00.00.00.00.0
09/15/200910Acceptable0.00.00.00.00.0
08/21/2009<10Acceptable0.00.00.00.00.0
07/29/2009<10Acceptable0.00.00.00.20.2
06/23/2009<10Acceptable0.00.00.60.51.1
06/06/2009<10Acceptable0.00.80.40.41.6
05/13/2009<10Acceptable0.00.00.00.00.0
10/21/200810Acceptable0.00.00.00.00.0
10/20/200840Acceptable0.00.00.00.00.0
10/19/200810Acceptable0.00.00.00.00.0
08/21/2008<10Acceptable0.00.00.00.00.0
07/20/2008<10Acceptable0.00.00.00.00.0

Entero Count (fecal indicator) and Rainfall Correlation

61 Samples taken

All Water Quality Parameters

61 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
10/16/2017<10Acceptable68.69.93.212.990.0
09/11/201720Acceptable71.18.73.61491.5
08/14/2017<10Acceptable796.34.58.792.3
07/10/2017<10Acceptable78.04.22.78.6103.5
06/12/2017<10Acceptable7022.417.996.5
05/15/201710Acceptable57.90.74.526.298.6
04/04/201774Beach Advisoryn/an/an/an/an/a
10/13/201610Acceptable65.512.23.93792
09/14/2016<10Acceptable78.410.90.5n/a97
08/15/201610Acceptable87717.129146
07/13/201610Acceptable79.87.489113
06/15/2016<10Acceptable7255.420111
05/20/2016<10Acceptable64.24.52.6n/a107
10/12/2015<10Acceptable66.610.52.63286
09/11/201520Acceptable7811.15.12184
08/12/201510Acceptable78.89.813.215105
07/08/2015<10Acceptable78.22.717.225107
06/11/2015<10Acceptable735.17.77109
05/12/2015<10Acceptable64.76.12.34198
10/13/2014<10Acceptable64.89.50.32386
09/08/201410Acceptable77.37.12210104
08/12/2014<10Acceptable78.27.45.71783
07/08/2014<10Acceptable77.13.19.51399
06/13/201410Acceptable68.67.120.61797
05/13/201410Acceptable58.64.42.53397
10/17/2013<10Acceptable66.29.53.81186
09/19/2013<10Acceptable70.16.441688
08/15/201310Acceptable75.25.59.71192
07/18/2013<10Acceptable81.946.31290
06/20/201310Acceptable691.23.91493
05/30/201320Acceptable64.32.337593
10/11/2012<10Acceptable64.25.46.73290
09/11/2012<10Acceptable74.98.17.9590
08/14/201210Acceptable81.29.14.6697
07/17/2012<10Acceptable81.49.421.910128
06/12/201210Acceptable71.84.14.42589
05/16/2012<10Acceptable62.91.4529103
10/20/201152Acceptable63.91.10.48493
09/15/2011464Beach Advisory710.12.113082
08/17/2011<10Acceptable80.65.93.73591
07/18/2011<10Acceptable81.43.55.716n/a
06/28/2011<10Acceptable79.52.27.41104
05/17/2011120Beach Advisory59.53.9n/an/a88
10/13/2010<10Acceptable64.90.55.22290
09/12/2010<10Acceptable72.78.76.11382
08/18/201010Acceptable79.210.110.21788
07/22/201031Acceptable81.48.840.212138
06/16/2010<10Acceptable72.47.94.41980
05/22/201020Acceptable638.22.71490
10/20/200910Acceptable56.56.42.31890
09/15/200910Acceptable73.47.52.82990
08/21/2009<10Acceptable81.25.64.22689
07/29/2009<10Acceptable78.33.65.12386
06/23/2009<10Acceptable71.40.51.13495
06/06/2009<10Acceptablen/an/an/an/an/a
05/13/2009<10Acceptable62.81.41.415101
10/21/200810Acceptable59.49.52889
10/20/200840Acceptable61.6122.53287
10/19/200810Acceptable62.6121.94083
08/21/2008<10Acceptable76.56.63.62486
07/20/2008<10Acceptablen/an/an/an/an/a

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:

Irvington, NY
This beach is located between a boat club and a village park. The site has kayaking, casual water contact, recreational boating and fishing. There’s a combined sewer outflow (CSO) approximately 100 yards to the south.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000 and NYSDEC Region 3: 914-428-2505

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