Croton Point Beach

Croton Point Park 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

73 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
10/17/2017<10Acceptable0.00.10.00.00.2
09/12/2017<10Acceptable0.00.00.00.00.0
08/15/201710Acceptable0.10.00.00.40.5
07/11/2017<10Acceptable0.40.10.00.00.5
06/13/201710Acceptable0.00.00.00.00.0
05/16/2017<10Acceptable0.00.00.11.71.8
04/06/201710Acceptable0.90.01.10.02.0
10/14/2016<10Acceptable0.00.10.00.00.1
09/15/2016<10Acceptable0.00.20.00.00.2
08/16/2016<10Acceptable0.00.00.10.10.2
07/14/2016<10Acceptable0.20.00.00.00.2
06/16/2016<10Acceptable0.00.00.00.00.0
05/21/2016<10Acceptable0.00.00.00.00.0
10/13/2015<10Acceptable0.00.00.00.00.0
09/12/2015<10Acceptable0.00.31.30.01.6
08/13/2015<10Acceptable0.00.01.00.01.0
07/09/201510Acceptable0.30.30.10.00.7
06/11/2015<10Acceptable0.00.00.20.20.4
05/12/2015<10Acceptable0.00.00.00.00.0
10/14/2014<10Acceptable0.00.00.00.40.4
09/08/201420Acceptable0.00.00.00.00.0
08/12/2014<10Acceptable0.00.00.00.00.0
07/08/2014<10Acceptable0.20.00.00.00.2
06/13/2014241Beach Advisory1.40.00.10.01.5
05/13/2014<10Acceptable0.00.00.10.30.4
10/17/201310Acceptable0.00.00.00.00.0
09/19/201310Acceptable0.00.00.00.00.0
08/15/2013<10Acceptable0.00.00.70.41.1
07/18/201310Acceptable0.00.00.00.00.0
06/20/2013<10Acceptable0.00.00.30.20.5
05/30/2013<10Acceptable0.00.00.40.00.4
10/11/201210Acceptable0.00.10.00.00.1
09/11/2012<10Acceptable0.00.00.01.41.4
08/14/2012<10Acceptable0.00.00.00.00.0
07/17/2012<10Acceptable0.00.00.20.00.2
06/12/201210Acceptable0.50.00.00.00.5
05/16/2012<10Acceptable0.10.40.10.00.6
10/20/201131Acceptable0.00.10.00.00.1
09/15/201131Acceptable0.00.00.00.00.0
08/17/201110Acceptable0.00.00.03.43.4
07/18/201110Acceptable0.00.00.00.00.0
06/28/2011<10Acceptable0.00.00.00.00.0
05/17/2011169Beach Advisory1.20.00.80.02.0
10/13/201010Acceptable0.00.10.30.00.4
09/12/2010<10Acceptable0.00.00.00.00.0
08/18/201010Acceptable0.00.00.20.30.5
07/22/201041Acceptable0.00.10.01.41.5
06/16/2010<10Acceptable0.00.00.00.00.0
05/22/2010<10Acceptable0.00.00.00.00.0
10/20/200910Acceptable0.00.00.00.00.0
09/15/2009<10Acceptable0.00.00.00.00.0
08/22/200920Acceptable0.60.60.00.01.2
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
06/08/2009<10Acceptable0.00.00.00.80.8
05/13/2009<10Acceptable0.00.00.00.00.0
10/21/2008<10Acceptable0.00.00.00.00.0
09/23/2008<10Acceptable0.00.00.00.00.0
08/21/2008<10Acceptable0.00.00.00.00.0
07/15/2008<10Acceptable0.01.10.00.01.1
06/25/200820Acceptable0.00.00.00.10.1
06/16/200811Acceptable0.00.01.70.01.7
05/20/200835Acceptable0.00.00.20.10.3
09/09/20072Acceptable0.00.00.00.00.0
08/23/2007<10Acceptable0.00.01.30.11.4
07/16/20073Acceptable0.00.00.00.00.0
06/20/2007<10Acceptable0.10.30.00.00.4
05/21/20074Acceptable0.00.00.20.00.2
04/25/200717Acceptable0.00.00.00.00.0
12/06/200616Acceptable0.00.00.00.00.0
10/20/200610Acceptable0.40.10.01.11.6
09/19/20062Acceptable0.00.00.00.00.0

Entero Count (fecal indicator) and Rainfall Correlation

73 Samples taken

All Water Quality Parameters

73 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
10/17/2017<10Acceptable65.67.32.39.889.0
09/12/2017<10Acceptable71.66.64.74.790.9
08/15/201710Acceptable79.44.49.213.896.5
07/11/2017<10Acceptable78.72.34.77.1104.8
06/13/201710Acceptable74.40.44.77.1116.8
05/16/2017<10Acceptable60.00.13.524.4100.3
04/06/201710Acceptable44.60.12.119.6100.8
10/14/2016<10Acceptable648.73.73294
09/15/2016<10Acceptable76.47.77.3n/a98
08/16/2016<10Acceptable85.74.81127107
07/14/2016<10Acceptable79.85.410.5599
06/16/2016<10Acceptable723.11216111
05/21/2016<10Acceptable61.51.818.831107
10/13/2015<10Acceptable67.26.55.12093
09/12/2015<10Acceptable78.57.33.71182
08/13/2015<10Acceptable78.66.153.416134
07/09/201510Acceptable781.215.43498
06/11/2015<10Acceptable76319.712133
05/12/2015<10Acceptable693.64.234104
10/14/2014<10Acceptable65.36.751291
09/08/201420Acceptable78.54.31818115
08/12/2014<10Acceptable79.15.35.12186
07/08/2014<10Acceptable80.50.7624102
06/13/2014241Beach Advisoryn/an/an/an/an/a
05/13/2014<10Acceptable61.32.32.216100
10/17/201310Acceptable68.16.83.1885
09/19/201310Acceptable72.54.34.61395
08/15/2013<10Acceptable782.76.514111
07/18/201310Acceptable85.52.25.14389
06/20/2013<10Acceptable73.60.14.911106
05/30/2013<10Acceptable69.80.71.42395
10/11/201210Acceptable63.33.85.34693
09/11/2012<10Acceptable76.45.9513789
08/14/2012<10Acceptable81.56.97.418117
07/17/2012<10Acceptable84.3720.811168
06/12/201210Acceptable73.41.24.31594
05/16/2012<10Acceptable66.70.26.217119
10/20/201131Acceptable62.90.11.14392
09/15/201131Acceptable71.50.11.79285
08/17/201110Acceptable81.84.56.716107
07/18/201110Acceptable83.51.46.99n/a
06/28/2011<10Acceptable791.48.521112
05/17/2011169Beach Advisory60.61.42.56991
10/13/201010Acceptable64.80.25.81892
09/12/2010<10Acceptable725.9112087
08/18/201010Acceptable82.46.48.912294
07/22/201041Acceptable82.16.631.137152
06/16/2010<10Acceptable73.75.69.32087
05/22/2010<10Acceptable68.63.97.3697
10/20/200910Acceptable58.64.61.71188
09/15/2009<10Acceptable76.54.75.243100
08/22/200920Acceptable81.4310.33195
08/21/2009<10Acceptable833.114.88107
07/29/2009<10Acceptable79.71.74.92599
06/23/2009<10Acceptable72.50.10.915100
06/08/2009<10Acceptablen/an/an/an/an/a
05/13/2009<10Acceptable63.30.52.716107
10/21/2008<10Acceptable61.16.96.3596
09/23/2008<10Acceptable73.14.52.24105
08/21/2008<10Acceptable77.74.48.310112
07/15/2008<10Acceptable80.84.45.719113
06/25/200820Acceptable76.95.49.114110
06/16/200811Acceptablen/an/an/an/an/a
05/20/200835Acceptable58.32.41.97696
09/09/20072Acceptable80.17.84.321104
08/23/2007<10Acceptable74.862.61683
07/16/20073Acceptable80.56.43.72296
06/20/2007<10Acceptablen/an/an/an/an/a
05/21/20074Acceptable63.80.41.15597
04/25/200717Acceptable51.90.10.7628105
12/06/200616Acceptable43.90.11.1496
10/20/200610Acceptablen/an/an/an/an/a
09/19/20062Acceptablen/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:

Croton, NY
Croton Point Park has a designated public swimming beach, operated by Westchester County. There is also a high volume of recreational boats, kayaking and fishing.

Agencies Responsible:

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

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