Haverstraw Bay mid-channel

Haverstraw Bay 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

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
08/15/2017<10Acceptable0.10.00.00.40.5
07/11/2017<10Acceptable0.40.10.00.00.5
06/13/2017<10Acceptable0.00.00.00.00.0
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
07/09/2015<10Acceptable0.30.30.10.00.7
06/11/201510Acceptable0.00.00.20.20.4
05/12/201510Acceptable0.00.00.00.00.0
10/14/2014<10Acceptable0.00.00.00.40.4
09/08/2014<10Acceptable0.00.00.00.00.0
08/12/2014<10Acceptable0.00.00.00.00.0
07/08/2014<10Acceptable0.20.00.00.00.2
06/13/2014<10Acceptable1.40.00.10.01.5
05/13/2014<10Acceptable0.00.00.10.30.4
10/17/2013<10Acceptable0.00.00.00.00.0
09/19/201310Acceptable0.00.00.00.00.0
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
05/30/2013<10Acceptable0.00.00.40.00.4
10/11/2012<10Acceptable0.00.10.00.00.1
09/11/2012<10Acceptable0.00.00.01.41.4
08/14/2012<10Acceptable0.00.00.00.00.0
07/17/201210Acceptable0.00.00.20.00.2
06/12/201210Acceptable0.50.00.00.00.5
05/16/2012<10Acceptable0.10.40.10.00.6
10/20/2011<10Acceptable0.00.10.00.00.1
09/15/201172Beach 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
05/17/201131Acceptable1.20.00.80.02.0
10/13/2010<10Acceptable0.00.10.30.00.4
09/12/201020Acceptable0.00.00.00.00.0
08/18/2010<10Acceptable0.00.00.20.30.5
07/22/2010<10Acceptable0.00.10.01.41.5
06/16/201020Acceptable0.00.00.00.00.0
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
08/21/200910Acceptable0.00.00.00.00.0
07/29/2009<10Acceptable0.60.00.00.20.8
06/23/200910Acceptable0.00.00.60.51.1
06/08/2009<10Acceptable0.00.00.00.80.8
05/13/20096Acceptable0.00.00.00.00.0
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
06/25/200886Beach Advisory0.00.00.00.10.1
06/16/20085Acceptable0.00.01.70.01.7
05/20/20086Acceptable0.00.00.20.10.3
09/09/2007<10Acceptable0.00.00.00.00.0
08/23/2007<10Acceptable0.00.01.30.11.4
07/16/200766Beach Advisory0.00.00.00.00.0
06/28/20079Acceptable0.00.70.00.00.7
06/20/20075Acceptable0.10.30.00.00.4
05/21/2007<10Acceptable0.00.00.20.00.2
04/25/2007164Beach Advisory0.00.00.00.00.0
12/06/200658Acceptable0.00.00.00.00.0
10/20/200616Acceptable0.40.10.01.11.6
09/19/20064Acceptable0.00.00.00.00.0

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<10Acceptable68.98.12.111.390.0
09/12/2017<10Acceptable75.75.139.988.2
08/15/2017<10Acceptable81.73.56.713.589.4
07/11/2017<10Acceptable78.91.62.512.087.9
06/13/2017<10Acceptable70.60.1414.2118.1
05/16/2017<10Acceptable59.40.12.429.194.9
04/06/201710Acceptable42.30.12.023.097.0
10/14/2016<10Acceptable65.99.52.63691
09/15/2016<10Acceptable77.98.45.4n/a96
08/16/2016<10Acceptable84.74.45.93389
07/14/2016<10Acceptable804.99.5994
06/16/2016<10Acceptable713.85.82097
05/21/2016<10Acceptable59.61.73.64695
10/13/2015<10Acceptable68.85.94.51190
09/12/2015<10Acceptable81.36.34.11384
08/13/2015<10Acceptable81.34.95.51088
07/09/2015<10Acceptable77.50.33.73086
06/11/201510Acceptable731.34.6498
05/12/201510Acceptable63.62.12.236100
10/14/2014<10Acceptable69.65.52.91791
09/08/2014<10Acceptable79.84.414.115110
08/12/2014<10Acceptable79.54.95.52287
07/08/2014<10Acceptable801.53.91594
06/13/2014<10Acceptablen/an/an/an/an/a
05/13/2014<10Acceptable59.62.51.620100
10/17/2013<10Acceptable68.47.33.9793
09/19/201310Acceptable73.24.53.81297
08/15/201310Acceptable81.21.63.93788
07/18/2013<10Acceptable84.32.62.93577
06/20/201310Acceptable71.40.13.318101
05/30/2013<10Acceptable67.90.12.32693
10/11/2012<10Acceptable67.74.73.52486
09/11/2012<10Acceptable79.15.14.911391
08/14/2012<10Acceptable82.974.3588
07/17/201210Acceptable84.57.311.411123
06/12/201210Acceptable73.40.32.52789
05/16/2012<10Acceptable63.90.13.931100
10/20/2011<10Acceptable64.50.11.26489
09/15/201172Beach Advisory69.10.11.614587
08/17/2011<10Acceptable82.33.22.92183
07/18/2011<10Acceptable82.81.12.516n/a
06/28/2011<10Acceptable77.51.23.6n/a84
05/17/201131Acceptable59.80.32.416692
10/13/2010<10Acceptable66.20.142886
09/12/201020Acceptable72.86.16.52487
08/18/2010<10Acceptable83.84.75.55287
07/22/2010<10Acceptable83.65.89.410105
06/16/201020Acceptable73.34.43.51782
05/22/2010<10Acceptable65.72.52.82393
10/20/200910Acceptable61.23.92.81393
09/15/2009<10Acceptable76.74.62.12883
08/21/200910Acceptable82.13.710.32197
07/29/2009<10Acceptable79.30.52.83184
06/23/200910Acceptable72.50.11.22197
06/08/2009<10Acceptablen/an/an/an/an/a
05/13/20096Acceptable60.70.23.931102
10/21/2008<10Acceptable65.25.51.8888
09/23/2008<10Acceptable763.21.7987
08/21/2008<10Acceptable802.82.41082
07/15/2008<10Acceptable82.343.31696
06/25/200886Beach Advisory76.64.61.71688
06/16/20085Acceptablen/an/an/an/an/a
05/20/20086Acceptable59.91.41.42794
09/09/2007<10Acceptable79.78.45.914107
08/23/2007<10Acceptable7862.4482
07/16/200766Beach Advisory83.25212100
06/28/20079Acceptablen/an/an/an/an/a
06/20/20075Acceptablen/an/an/an/an/a
05/21/2007<10Acceptable64.90.125298
04/25/2007164Beach Advisory48.70.10.6643109
12/06/200658Acceptable45.40.51.41696
10/20/200616Acceptablen/an/an/an/an/a
09/19/20064Acceptablen/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:

Haverstraw, NY
Near the ship channel in Haverstraw Bay, this deep water sampling site has recreational boating and fishing.

Agencies Responsible:

Rockland County Dept. of Health: 845-364-2900, Westchester County Dept. of Health: 914-813-5000 and NYSDEC Region 3: 914-428-2505

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