Gay’s Point mid-channel

Gay's Point

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
10/19/201718Acceptable0.00.00.00.00.0
09/14/201717Acceptable0.00.00.00.00.0
08/17/201712Acceptable0.00.00.00.00.0
07/13/201721Acceptable0.20.10.10.00.3
06/15/20172Acceptable0.00.00.00.00.0
05/18/20174Acceptable0.00.00.00.30.3
04/07/2017411Beach Advisory0.00.50.00.91.4
10/18/20162Acceptable0.00.00.00.00.0
09/17/20166Acceptable0.00.00.00.00.0
08/18/201620Acceptable0.00.00.20.00.2
07/16/20161Acceptable0.00.10.10.00.2
06/18/20163Acceptable0.00.00.00.00.0
05/23/2016<1Acceptable0.00.00.00.00.0
10/15/20152Acceptable0.00.00.00.00.0
09/14/201536Acceptable0.00.91.20.12.2
08/15/20153Acceptable0.30.30.00.00.6
07/11/2015130Beach Advisory0.00.01.20.01.2
06/13/20154Acceptable0.01.30.00.01.3
05/14/20153Acceptable0.00.00.10.00.1
10/16/20145Acceptable0.30.10.00.00.4
09/10/20142Acceptable0.00.00.00.00.0
08/14/20149Acceptable0.00.10.00.00.1
07/10/201416Acceptable0.01.70.40.32.4
06/15/2014980Beach Advisory0.00.50.50.11.1
05/15/20146Acceptable0.00.10.00.00.1
10/21/20139Acceptable0.00.00.00.20.2
09/21/20138Acceptable0.00.00.00.00.0
08/19/201317Acceptable0.00.00.00.00.0
07/21/201320Acceptable0.00.00.00.00.0
06/24/201315Acceptable0.00.00.00.00.0
06/04/2013345Beach Advisory0.00.01.10.11.2
10/15/20123Acceptable0.00.50.00.10.6
09/15/20129Acceptable0.10.00.00.00.1
08/18/201217Acceptable0.00.10.00.20.3
07/21/20121Acceptable0.00.00.00.20.2
06/16/20124Acceptable0.00.00.00.20.2
05/20/201219Acceptable0.00.00.00.00.0
10/16/20111733Beach Advisory0.00.11.10.31.5
09/19/201114Acceptable0.00.00.00.10.1
08/21/20116Acceptable0.00.00.00.00.0
07/14/201110Acceptable0.00.30.00.00.3
07/02/201137Acceptable0.00.01.01.12.1
05/19/2011260Beach Advisory0.80.20.10.51.6
10/16/2010116Beach Advisory0.01.00.30.01.3
09/14/20108Acceptable0.00.00.00.00.0
08/23/201010Acceptable0.10.40.00.10.6
08/21/20103Acceptable0.00.10.10.00.2
07/19/20105Acceptable0.00.20.50.00.7
06/18/201014Acceptable0.00.00.20.00.2
05/25/20104Acceptable0.00.00.00.00.0
10/23/20098Acceptable0.00.00.00.00.0
09/17/200913Acceptable0.00.00.00.00.0
08/24/20092420Beach Advisory0.00.31.01.52.8
07/31/20091203Beach Advisory0.60.31.00.01.9
06/12/20096Acceptable0.30.40.00.51.2
05/16/20091Acceptable0.00.00.50.00.5
05/15/20091Acceptable0.00.50.00.00.5
10/23/200810Acceptable0.00.20.10.00.3
09/17/200811Acceptable0.00.00.00.30.3
08/09/2008613Beach Advisory0.00.01.30.21.5
07/17/20087Acceptable0.00.00.00.10.1

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
10/19/201718Acceptable63.50.112.114.495.6
09/14/201717Acceptable68.80.125.917.8107.3
08/17/201712Acceptable76.50.16.210.990.9
07/13/201721Acceptable75.60.11.145.091.9
06/15/20172Acceptable70.70.12.813.499
05/18/20174Acceptable59.90.11.627.9107.8
04/07/2017411Beach Advisory41.60.10.3103.2103.8
10/18/20162Acceptable61.90.16.64594
09/17/20166Acceptable740.14.7n/a87
08/18/201620Acceptable81.30.11.73184
07/16/20161Acceptable79.60.112.11691
06/18/20163Acceptable71.70.13.721100
05/23/2016<1Acceptable61.30.11.625104
10/15/20152Acceptable60.30.216.42493
09/14/201536Acceptable76.60.15.21686
08/15/20153Acceptable78.30.16.514101
07/11/2015130Beach Advisory73.90.13.22894
06/13/20154Acceptable71.40.1112193
05/14/20153Acceptable66.90.16.740n/a
10/16/20145Acceptable63.90.27.320108
09/10/20142Acceptable75.40.12.227113
08/14/20149Acceptable76.10.15.62397
07/10/201416Acceptable77.90.11.82495
06/15/2014980Beach Advisory690.1078104
05/15/20146Acceptable620.11.61998
10/21/20139Acceptable60.60.19.315195
09/21/20138Acceptable70.70.14.72595
08/19/201317Acceptable74.30.11.910886
07/21/201320Acceptable82.60.112489
06/24/201315Acceptable72.40.11.418102
06/04/2013345Beach Advisory69.40.10.92393
10/15/20123Acceptable58.40.12.94795
09/15/20129Acceptable73.90.13.15394
08/18/201217Acceptable79.80.23.31093
07/21/20121Acceptable81.30.26.517102
06/16/20124Acceptable72.50.11.61895
05/20/201219Acceptable64.40.1n/an/a98
10/16/20111733Beach Advisory61.60.10.55397
09/19/201114Acceptable66.30.10.84098
08/21/20116Acceptable770.111.938104
07/14/201110Acceptable78.40.1819155
07/02/201137Acceptable71.80.10.924n/a
05/19/2011260Beach Advisoryn/an/an/an/an/a
10/16/2010116Beach Advisory55.80.11.61696
09/14/20108Acceptable71.30.116.82792
08/23/201010Acceptablen/an/an/an/an/a
08/21/20103Acceptable78.30.16.3n/a105
07/19/20105Acceptable830.19.516101
06/18/201014Acceptable70.50.125.842101
05/25/20104Acceptable67.20.14.2128109
10/23/20098Acceptable50.50.10.93692
09/17/200913Acceptable69.30.131.970103
08/24/20092420Beach Advisory79.40.19.47588
07/31/20091203Beach Advisory75.30.15.43091
06/12/20096Acceptablen/an/an/an/an/a
05/16/20091Acceptable62.30.11.515101
05/15/20091Acceptable61.9n/a1.911100
10/23/200810Acceptable54.50.118.94294
09/17/200811Acceptablen/an/an/an/an/a
08/09/2008613Beach Advisoryn/an/an/an/an/a
07/17/20087Acceptable82.20.1n/an/a103

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:

Coxsackie, NY
A state park with camping, recreational boating and swimming is directly east of this sample site. It is a relatively undeveloped portion of the estuary.

Agencies Responsible:

Columbia County Dept. of Health: 518-828-3358, Greene County Dept. of Health: 518-719-3600 and NYSDEC Region 4: 518-357-2045

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