Little Stony Point

Little Stony Point copy

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

56 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.

Quality Rain, day of (in) Prior Day 2 Days Prior 3 Days Prior Rain 4 Days Total Rain
Sort Sort Sort Sort Sort Sort Sort Sort
10/16/2016 26 Acceptable 0.0 0.0 0.0 0.0 0.0
09/15/2016 51 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2016 17 Acceptable 0.0 0.0 0.1 0.1 0.2
07/14/2016 3 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2016 6 Acceptable 0.0 0.0 0.0 0.0 0.0
05/21/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/13/2015 7 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2015 8 Acceptable 0.0 0.1 0.9 0.0 1.0
08/13/2015 7 Acceptable 0.0 0.0 0.9 0.0 0.9
07/09/2015 3 Acceptable 0.0 0.0 0.1 0.0 0.1
06/12/2015 3 Acceptable 0.0 0.0 0.0 0.3 0.3
05/13/2015 1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/14/2014 20 Acceptable 0.0 0.0 0.0 0.1 0.1
09/09/2014 1 Acceptable 0.0 0.0 0.0 0.1 0.1
08/13/2014 9 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2014 11 Acceptable 0.0 0.1 0.2 0.0 0.3
06/14/2014 19 Acceptable 0.0 0.1 0.0 0.1 0.2
05/14/2014 8 Acceptable 0.0 0.0 0.0 0.0 0.0
10/18/2013 12 Acceptable 0.0 0.0 0.0 0.0 0.0
09/20/2013 7 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2013 12 Acceptable 0.0 0.0 0.0 0.0 0.0
07/19/2013 15 Acceptable 0.0 0.1 0.0 0.0 0.1
06/21/2013 28 Acceptable 0.0 0.0 0.0 0.0 0.0
06/01/2013 8 Acceptable 0.0 0.0 0.0 0.0 0.0
10/13/2012 11 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2012 16 Acceptable 0.0 0.0 0.0 0.0 0.0
08/15/2012 7 Acceptable 0.3 0.1 0.0 0.0 0.4
07/19/2012 9 Acceptable 0.0 0.2 0.0 0.0 0.2
06/14/2012 <1 Acceptable 0.0 0.2 0.3 0.0 0.5
05/18/2012 <1 Acceptable 0.0 0.0 0.0 0.3 0.3
10/18/2011 10 Acceptable 0.0 0.0 0.1 0.0 0.1
09/17/2011 53 Acceptable 0.0 0.0 0.1 0.0 0.1
08/18/2011 13 Acceptable 0.1 0.0 0.1 0.6 0.8
07/17/2011 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/29/2011 6 Acceptable 0.5 0.0 0.0 0.0 0.5
05/18/2011 23 Acceptable 0.9 0.8 0.1 0.3 2.1
10/14/2010 25 Acceptable 0.0 0.0 0.3 0.1 0.4
09/13/2010 166 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/19/2010 1 Acceptable 0.0 0.0 0.0 1.0 1.0
07/20/2010 99 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/17/2010 6 Acceptable 0.0 0.0 0.0 0.0 0.0
05/23/2010 4 Acceptable 0.0 0.0 0.0 0.0 0.0
10/21/2009 16 Acceptable 0.0 0.0 0.0 0.2 0.2
09/16/2009 17 Acceptable 0.0 0.0 0.0 0.0 0.0
08/22/2009 10 Acceptable 0.3 0.3 0.0 0.0 0.6
08/03/2009 13 Acceptable 0.0 0.6 0.0 1.1 1.7
07/30/2009 4 Acceptable 0.0 0.3 0.0 0.2 0.5
06/09/2009 13 Acceptable 0.9 0.0 0.0 0.0 0.9
05/17/2009 5 Acceptable 0.7 0.2 0.0 0.6 1.5
05/14/2009 <1 Acceptable 0.1 0.0 0.0 0.0 0.1
10/22/2008 32 Acceptable 0.0 0.0 0.0 0.0 0.0
09/20/2008 3 Acceptable 0.0 0.0 0.0 0.0 0.0
08/06/2008 1 Acceptable 0.3 0.0 0.0 0.0 0.3
07/16/2008 <1 Acceptable 0.0 0.0 0.6 0.0 0.6
06/17/2008 13 Acceptable 0.0 0.8 0.0 0.2 1.0
05/21/2008 3 Acceptable 0.0 0.0 0.0 0.1 0.1

Entero Count (fecal indicator) and Rainfall Correlation

56 Samples taken

All Water Quality Parameters

56 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%).

Sort Sort Sort Sort Sort Sort Sort Sort
10/16/2016 26 Acceptable
09/15/2016 51 Acceptable 78.2 3.6 4.0 n/a 90.6
08/16/2016 17 Acceptable 83 1.2 3.4 40.7 87.5
07/14/2016 3 Acceptable 78.1 0.8 4.7 18.8 93.2
06/16/2016 6 Acceptable 70.1 0.6 5.1 29.9 95.4
05/21/2016 1 Acceptable 59.8 0.1 5.4 42.9 105.3
10/13/2015 7 Acceptable 67.4 1.9 3.8 44 89
09/12/2015 8 Acceptable 79.6 2.5 3.6 30 81
08/13/2015 7 Acceptable 79 1 4.3 26 88
07/09/2015 3 Acceptable 74.5 0.1 2.8 38 82
06/12/2015 3 Acceptable 71.2 0.1 3.7 7 97
05/13/2015 1 Acceptable 60.1 0.2 3.4 43 n/a
10/14/2014 20 Acceptable 66.2 1.6 1.7 52 90
09/09/2014 1 Acceptable 76.7 0.3 2.8 42 87
08/13/2014 9 Acceptable 77.8 0.5 2.3 38 87
07/09/2014 11 Acceptable 77.3 0.1 3 27 86
06/14/2014 19 Acceptable 69.2 0.3 3.7 52 87
05/14/2014 8 Acceptable 57.8 0.1 5.7 31 99
10/18/2013 12 Acceptable 66.6 1.6 2.6 72 90
09/20/2013 7 Acceptable 72.6 0.3 3.7 41 90
08/17/2013 12 Acceptable 77.1 0.1 2.4 65 83
07/19/2013 15 Acceptable 83.4 0.1 3.1 62 77
06/21/2013 28 Acceptable 66 0.1 5 108 95
06/01/2013 8 Acceptable 67.7 0.1 5 26 102
10/13/2012 11 Acceptable 64.5 0.7 5.2 37 89
09/13/2012 16 Acceptable 78.8 2.5 3.6 29 92
08/15/2012 7 Acceptable 81.4 2 2.7 17 92
07/19/2012 9 Acceptable 81.7 2.9 2.4 21 84
06/14/2012 <1 Acceptable 72.4 0.1 1.8 32 93
05/18/2012 <1 Acceptable 62.2 0.1 2.7 23 92
10/18/2011 10 Acceptable 61.4 0.1 1.5 114 90
09/17/2011 53 Acceptable 66.4 0.1 1.3 284 85
08/18/2011 13 Acceptable 79.5 0.3 1.6 42 83
07/17/2011 <1 Acceptable 79.3 0.1 3.7 n/a n/a
06/29/2011 6 Acceptable 75.8 0.1 4.7 38 88
05/18/2011 23 Acceptable n/a n/a n/a n/a n/a
10/14/2010 25 Acceptable 61.4 0.1 3.7 29 81
09/13/2010 166 Beach Advisory 74.2 0.8 5.3 20 84
08/19/2010 1 Acceptable 81.8 1 10.2 35 109
07/20/2010 99 Beach Advisory 82.3 1.1 2.8 15 85
06/17/2010 6 Acceptable 71.2 0.4 4.8 59 84
05/23/2010 4 Acceptable 63.6 0.2 6.2 41 99
10/21/2009 16 Acceptable 58.6 0.2 2.3 31 88
09/16/2009 17 Acceptable 73.3 0.6 3.1 21 83
08/22/2009 10 Acceptable 79.7 0.1 2.9 26 80
08/03/2009 13 Acceptable n/a n/a n/a n/a n/a
07/30/2009 4 Acceptable 77 0.1 3.6 41 89
06/09/2009 13 Acceptable n/a n/a n/a n/a n/a
05/17/2009 5 Acceptable n/a n/a n/a n/a n/a
05/14/2009 <1 Acceptable 59.4 0.1 7.1 28 107
10/22/2008 32 Acceptable 60.6 1.3 2 90 90
09/20/2008 3 Acceptable n/a n/a n/a n/a n/a
08/06/2008 1 Acceptable n/a n/a n/a n/a n/a
07/16/2008 <1 Acceptable 78.5 0.3 2.2 23 93
06/17/2008 13 Acceptable n/a n/a n/a n/a n/a
05/21/2008 3 Acceptable 56.8 0.1 3 48 93

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:

Cold Spring, NY
At Little Stony Point there is an unofficial swimming beach, as well as recreational boating, kayaking, and fishing.

Agencies Responsible:

Putnam County Dept. of Health: 845-278-6558 and NYSDEC Region 3: 914-428-2505

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