Hudson above Mohawk River

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

60 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
10/19/20178Acceptable0.00.00.00.00.0
09/14/201719Acceptable0.00.00.00.00.0
08/17/20174Acceptable0.00.00.00.00.0
07/13/201771Beach Advisory0.20.10.10.00.3
06/15/20177Acceptable0.00.00.00.00.0
05/18/20176Acceptable0.00.00.00.30.3
04/07/2017>2420Beach Advisory0.00.50.00.91.4
10/18/20165Acceptable0.00.00.00.00.0
09/17/201627Acceptable0.00.00.00.00.0
08/18/201630Acceptable0.00.00.20.00.2
07/16/201622Acceptable0.00.10.10.00.2
06/18/20167Acceptable0.00.00.00.00.0
05/23/20161Acceptable0.00.00.00.00.0
10/15/201510Acceptable0.00.00.00.00.0
09/14/201581Beach Advisory0.00.91.20.12.2
08/15/201536Acceptable0.30.30.00.00.6
07/11/201514Acceptable0.00.01.20.01.2
06/13/201596Beach Advisory0.01.30.00.01.3
05/14/20151Acceptable0.00.00.10.00.1
10/16/201436Acceptable0.30.10.00.00.4
09/10/201415Acceptable0.00.00.00.00.0
08/14/201444Acceptable0.00.10.00.00.1
07/10/2014132Beach Advisory0.01.70.40.32.4
06/15/2014411Beach Advisory0.00.50.50.11.1
05/15/201412Acceptable0.10.10.00.00.2
10/21/20134Acceptable0.00.00.00.20.2
09/21/201320Acceptable0.00.00.00.00.0
08/19/20136Acceptable0.00.00.00.00.0
07/21/201331Acceptable0.00.00.00.00.0
06/24/201330Acceptable1.40.00.00.01.4
06/04/2013238Beach Advisory0.00.01.10.11.2
10/15/201223Acceptable0.40.50.00.11.0
09/15/201211Acceptable0.10.00.00.00.1
08/18/201215Acceptable0.00.10.00.20.3
07/21/20126Acceptable0.00.00.00.20.2
06/16/201210Acceptable0.00.00.00.20.2
05/20/201211Acceptable0.00.00.00.00.0
10/16/20111733Beach Advisory0.00.11.10.31.5
09/19/201111Acceptable0.00.00.00.10.1
08/21/2011231Beach Advisory0.40.00.00.00.4
07/14/201111Acceptable0.00.30.00.00.3
07/02/201111Acceptable0.00.01.01.12.1
05/19/201191Beach Advisory0.80.20.10.51.6
10/16/2010>2420Beach Advisory0.01.00.30.01.3
09/14/201015Acceptable0.00.00.00.00.0
08/21/201025Acceptable0.00.10.10.00.2
07/19/201031Acceptable0.00.20.50.00.7
06/18/201023Acceptable0.00.00.20.00.2
05/25/2010<1Acceptable0.00.00.00.00.0
10/23/20094Acceptable0.00.00.00.00.0
09/17/200928Acceptable0.00.00.00.00.0
08/24/2009276Beach Advisory0.00.31.01.52.8
07/31/2009>2420Beach Advisory0.60.31.00.01.9
05/15/20096Acceptable0.00.50.00.00.5
10/23/2008<1Acceptable0.00.20.10.00.3
09/18/20086Acceptable0.00.00.00.00.0
08/09/200841Acceptable0.00.01.30.21.5
07/17/200815Acceptable0.00.00.00.10.1
06/19/200812Acceptable0.00.40.10.91.4
05/22/200812Acceptable0.20.00.00.00.2

Entero Count (fecal indicator) and Rainfall Correlation

60 Samples taken

All Water Quality Parameters

60 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
10/19/20178Acceptable62.00.13.14.2102.9
09/14/201719Acceptable69.50.12.83.5106.5
08/17/20174Acceptable77.90.13.15.4112.1
07/13/201771Beach Advisory74.70.10.824.0103.6
06/15/20177Acceptable72.70.1214.8106.4
05/18/20176Acceptable63.80.12.018.6109.5
04/07/2017>2420Beach Advisoryn/an/an/an/an/a
10/18/20165Acceptable61.70.11.73399
09/17/201627Acceptable730.11.9n/a103
08/18/201630Acceptable80.10.12.927107
07/16/201622Acceptable810.13.825103
06/18/20167Acceptable74.50.10.415114
05/23/20161Acceptable66.60.10.220107
10/15/201510Acceptable59.10.138103
09/14/201581Beach Advisory74.20.12.3895
08/15/201536Acceptable78.80.13.612105
07/11/201514Acceptable75.40.13.221107
06/13/201596Beach Advisory72.80.12.65107
05/14/20151Acceptable66.80.12.613106
10/16/201436Acceptable63.50.15.114101
09/10/201415Acceptable75.40.10.513104
08/14/201444Acceptable75.60.12.88103
07/10/2014132Beach Advisory76.10.11.154103
06/15/2014411Beach Advisory69.10.11.938109
05/15/201412Acceptable620.11.112109
10/21/20134Acceptable59.30.11.5100104
09/21/201320Acceptable67.10.13.224106
08/19/20136Acceptable73.80.1150106
07/21/201331Acceptable81.10.12.222104
06/24/201330Acceptable73.30.11.916104
06/04/2013238Beach Advisory68.80.10.645103
10/15/201223Acceptable56.50.11.710100
09/15/201211Acceptable72.50.10.96110
08/18/201215Acceptable79.30.11.45114
07/21/20126Acceptable81.70.16.111124
06/16/201210Acceptable74.10.11.615108
05/20/201211Acceptable66.70.1114108
10/16/20111733Beach Advisory59.90.11.726102
09/19/201111Acceptable64.90.10.97104
08/21/2011231Beach Advisory77.30.21.52694
07/14/201111Acceptable770.16.18n/a
07/02/201111Acceptable73.80.10.77n/a
05/19/201191Beach Advisoryn/an/an/an/an/a
10/16/2010>2420Beach Advisory540.11.951102
09/14/201015Acceptable69.40.16.14101
08/21/201025Acceptable780.12.6n/a106
07/19/201031Acceptable81.30.18592
06/18/201023Acceptable70.20.176103
05/25/2010<1Acceptable74.10.17154112
10/23/20094Acceptable50.60.10.419100
09/17/200928Acceptable68.50.21.88105
08/24/2009276Beach Advisory76.40.1257103
07/31/2009>2420Beach Advisory72.30.12.3107103
05/15/20096Acceptable62.3n/a1.26108
10/23/2008<1Acceptable52.10.11.3099
09/18/20086Acceptablen/an/an/an/an/a
08/09/200841Acceptablen/an/an/an/an/a
07/17/200815Acceptable80.30.12.113110
06/19/200812Acceptablen/an/an/an/an/a
05/22/200812Acceptable58.30.12.53104

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:

Waterford, NY
This site has boating, kayaking and fishing. The Waterford drinking water intake is in the vicinity.

Agencies Responsible:

Rensselaer County Dept. of Health: 518-270-2655, Saratoga County Dept. of Health: 518-584-7460 and NYSDEC Region 4: 518-357-2045

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