Beacon Harbor

Beacon Harbor

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

62 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
09/12/201711Acceptable0.00.00.00.00.0
08/15/201711Acceptable0.10.00.00.70.7
07/11/201728Acceptable0.20.00.00.00.2
06/13/20176Acceptable0.40.00.00.00.5
05/16/20172Acceptable0.00.00.11.31.4
04/06/201715Acceptable0.50.00.70.01.2
10/16/201612Acceptable0.00.00.00.00.0
09/15/201616Acceptable0.00.00.00.00.0
08/16/201625Acceptable0.00.00.10.10.2
07/14/20166Acceptable0.00.00.00.00.0
06/16/20168Acceptable0.00.00.00.00.0
05/21/20161Acceptable0.00.00.00.00.0
10/13/201533Acceptable0.00.00.00.00.0
09/12/201531Acceptable0.60.10.90.01.6
08/13/20156Acceptable0.00.00.90.00.9
07/09/201515Acceptable0.00.00.10.00.1
06/12/20157Acceptable0.00.00.00.30.3
05/13/201517Acceptable0.00.00.00.00.0
10/14/201459Acceptable0.00.00.00.10.1
09/09/201411Acceptable0.00.00.00.10.1
08/13/2014122Beach Advisory0.00.00.00.00.0
07/09/201415Acceptable0.00.10.20.00.3
06/14/2014124Beach Advisory0.00.10.00.10.2
05/14/201412Acceptable0.00.00.00.00.0
10/18/201334Acceptable0.00.00.00.00.0
09/20/20137Acceptable0.00.00.00.00.0
08/17/20139Acceptable0.00.00.00.00.0
07/19/2013199Beach Advisory0.00.10.00.00.1
06/22/201312Acceptable0.00.00.00.00.0
06/02/20133Acceptable0.00.00.00.00.0
10/14/201238Acceptable0.00.00.00.00.0
09/13/201256Acceptable0.00.00.00.00.0
08/15/201215Acceptable0.30.10.00.00.4
07/19/201218Acceptable0.00.20.00.00.2
06/14/201210Acceptable0.00.20.30.00.5
05/18/20122Acceptable0.00.00.00.30.3
10/18/201125Acceptable0.00.00.10.00.1
09/17/201140Acceptable0.00.00.10.00.1
08/18/201121Acceptable0.10.00.10.60.8
07/17/2011<1Acceptable0.00.00.00.00.0
06/29/201169Beach Advisory0.50.00.00.00.5
05/18/201199Beach Advisory0.90.80.10.32.1
10/15/2010816Beach Advisory0.40.80.00.31.5
10/14/201056Acceptable0.00.00.30.10.4
09/13/201020Acceptable0.00.00.00.00.0
08/19/201048Acceptable0.00.00.01.01.0
07/20/201028Acceptable0.00.00.00.00.0
06/17/201050Acceptable0.00.00.00.00.0
05/23/20107Acceptable0.00.00.00.00.0
10/21/2009107Beach Advisory0.00.00.00.20.2
09/16/200923Acceptable0.00.00.00.00.0
08/22/20098Acceptable0.30.30.00.00.6
08/03/20098Acceptable0.00.60.01.11.7
07/30/200912Acceptable0.00.30.00.20.5
06/09/2009104Beach Advisory0.90.00.00.00.9
05/14/20096Acceptable0.10.00.00.00.1
10/22/200822Acceptable0.00.00.00.00.0
09/20/20083Acceptable0.00.00.00.00.0
08/06/20084Acceptable0.30.00.00.00.3
07/16/20081Acceptable0.00.00.60.00.6
06/17/200817Acceptable0.00.20.00.10.3
05/21/20083Acceptable0.00.00.00.10.1

Entero Count (fecal indicator) and Rainfall Correlation

62 Samples taken

All Water Quality Parameters

62 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
09/12/201711Acceptable74.70.76.311.4103.7
08/15/201711Acceptable77.60.27.813.999.4
07/11/201728Acceptable79.80.17.115.2118.1
06/13/20176Acceptable73.70.1813.2152.3
05/16/20172Acceptable61.50.13.118.4108.3
04/06/201715Acceptable42.90.11.929.6100.1
10/16/201612Acceptable66.12.54.64896
09/15/201616Acceptable78.41.73.6n/a101
08/16/201625Acceptable83.90.36.835113
07/14/20166Acceptable78.80.461599
06/16/20168Acceptable71.30.16.224100
05/21/20161Acceptable61.30.15.435125
10/13/201533Acceptable66.60.65.22596
09/12/201531Acceptable78.71.15.52090
08/13/20156Acceptable80.10.54.81497
07/09/201515Acceptable76.20.13.82091
06/12/20157Acceptable72.30.15.21494
05/13/201517Acceptable60.90.15.938n/a
10/14/201459Acceptable67.80.71.32996
09/09/201411Acceptable75.50.24.12191
08/13/2014122Beach Advisory77.90.26.41694
07/09/201415Acceptable78.50.15.52894
06/14/2014124Beach Advisory70.80.26.43693
05/14/201412Acceptable60.10.15.735105
10/18/201334Acceptable65.90.73.43595
09/20/20137Acceptable73.30.14.828104
08/17/20139Acceptable79.90.13.48193
07/19/2013199Beach Advisoryn/an/an/an/an/a
06/22/201312Acceptable67.40.17.54599
06/02/20133Acceptable69.40.17.225103
10/14/201238Acceptable62.30.24.21591
09/13/201256Acceptable790.75.893106
08/15/201215Acceptable81.10.43.92499
07/19/201218Acceptable82.70.63.51595
06/14/201210Acceptable74.90.11.72995
05/18/20122Acceptable64.50.12.319101
10/18/201125Acceptable60.90.11.89890
09/17/201140Acceptable66.50.11.422785
08/18/201121Acceptable800.22.17886
07/17/2011<1Acceptable800.1n/a19n/a
06/29/201169Beach Advisory77.40.16.337109
05/18/201199Beach Advisoryn/an/an/an/an/a
10/15/2010816Beach Advisory59.50.15.14483
10/14/201056Acceptable610.14.83183
09/13/201020Acceptable74.20.37.11490
08/19/201048Acceptable81.90.511.114108
07/20/201028Acceptable82.50.86.71192
06/17/201050Acceptable72.10.26.88787
05/23/20107Acceptable65.30.15.423100
10/21/2009107Beach Advisory58.60.12.81790
09/16/200923Acceptable72.40.23.42389
08/22/20098Acceptable79.60.13.61984
08/03/20098Acceptablen/an/an/an/an/a
07/30/200912Acceptable80.30.1318104
06/09/2009104Beach Advisoryn/an/an/an/an/a
05/14/20096Acceptable60.30.17.928109
10/22/200822Acceptable60.70.62.51290
09/20/20083Acceptablen/an/an/an/an/a
08/06/20084Acceptablen/an/an/an/an/a
07/16/20081Acceptable79.30.23.215105
06/17/200817Acceptablen/an/an/an/an/a
05/21/20083Acceptable56.30.13.43597

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:

Beacon, NY
The Beacon Harbor sampling site has recreational boating, kayaking, and fishing. There is a seasonal public “river pool” to the north, and a storm drain overflow in the vicinity.

Agencies Responsible:

Dutchess County Dept. of Health: 845-486-3400 and NYSDEC Region 3: 845-256-3000

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