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

63 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
10/17/201729Acceptable0.00.00.00.00.1
09/12/201717Acceptable0.00.00.00.00.0
08/15/20174Acceptable0.10.00.00.70.7
07/11/20178Acceptable0.20.00.00.00.2
06/13/2017<1Acceptable0.00.00.00.00.0
05/16/201711Acceptable0.00.00.11.31.4
04/06/201711Acceptable0.50.00.70.01.2
10/16/201626Acceptable0.00.00.00.00.0
09/15/201651Acceptable0.00.00.00.00.0
08/16/201617Acceptable0.00.00.10.10.2
07/14/20163Acceptable0.00.00.00.00.0
06/16/20166Acceptable0.00.00.00.00.0
05/21/20161Acceptable0.00.00.00.00.0
10/13/20157Acceptable0.00.00.00.00.0
09/12/20158Acceptable0.00.10.90.01.0
08/13/20157Acceptable0.00.00.90.00.9
07/09/20153Acceptable0.00.00.10.00.1
06/12/20153Acceptable0.00.00.00.30.3
05/13/20151Acceptable0.00.00.00.00.0
10/14/201420Acceptable0.00.00.00.10.1
09/09/20141Acceptable0.00.00.00.10.1
08/13/20149Acceptable0.00.00.00.00.0
07/09/201411Acceptable0.00.10.20.00.3
06/14/201419Acceptable0.00.10.00.10.2
05/14/20148Acceptable0.00.00.00.00.0
10/18/201312Acceptable0.00.00.00.00.0
09/20/20137Acceptable0.00.00.00.00.0
08/17/201312Acceptable0.00.00.00.00.0
07/19/201315Acceptable0.00.10.00.00.1
06/21/201328Acceptable0.00.00.00.00.0
06/01/20138Acceptable0.00.00.00.00.0
10/13/201211Acceptable0.00.00.00.00.0
09/13/201216Acceptable0.00.00.00.00.0
08/15/20127Acceptable0.30.10.00.00.4
07/19/20129Acceptable0.00.20.00.00.2
06/14/2012<1Acceptable0.00.20.30.00.5
05/18/2012<1Acceptable0.00.00.00.30.3
10/18/201110Acceptable0.00.00.10.00.1
09/17/201153Acceptable0.00.00.10.00.1
08/18/201113Acceptable0.10.00.10.60.8
07/17/2011<1Acceptable0.00.00.00.00.0
06/29/20116Acceptable0.50.00.00.00.5
05/18/201123Acceptable0.90.80.10.32.1
10/14/201025Acceptable0.00.00.30.10.4
09/13/2010166Beach Advisory0.00.00.00.00.0
08/19/20101Acceptable0.00.00.01.01.0
07/20/201099Beach Advisory0.00.00.00.00.0
06/17/20106Acceptable0.00.00.00.00.0
05/23/20104Acceptable0.00.00.00.00.0
10/21/200916Acceptable0.00.00.00.20.2
09/16/200917Acceptable0.00.00.00.00.0
08/22/200910Acceptable0.30.30.00.00.6
08/03/200913Acceptable0.00.60.01.11.7
07/30/20094Acceptable0.00.30.00.20.5
06/09/200913Acceptable0.90.00.00.00.9
05/17/20095Acceptable0.70.20.00.61.5
05/14/2009<1Acceptable0.10.00.00.00.1
10/22/200832Acceptable0.00.00.00.00.0
09/20/20083Acceptable0.00.00.00.00.0
08/06/20081Acceptable0.30.00.00.00.3
07/16/2008<1Acceptable0.00.00.60.00.6
06/17/200813Acceptable0.00.20.00.10.3
05/21/20083Acceptable0.00.00.00.10.1

Entero Count (fecal indicator) and Rainfall Correlation

63 Samples taken

All Water Quality Parameters

63 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
10/17/201729Acceptable69.32.62.620.086.4
09/12/201717Acceptable72.41.73.812.485.8
08/15/20174Acceptable77.30.34.516.588.2
07/11/20178Acceptable77.60.14.215.296.4
06/13/2017<1Acceptable68.60.16.716.2116.9
05/16/201711Acceptable57.50.13.524.096.3
04/06/201711Acceptable41.80.11.937.7100.7
10/16/201626Acceptable66.94.81.55188
09/15/201651Acceptable78.23.64n/a91
08/16/201617Acceptable831.23.44188
07/14/20163Acceptable78.10.84.71993
06/16/20166Acceptable70.10.65.13095
05/21/20161Acceptable59.80.15.443105
10/13/20157Acceptable67.41.93.84489
09/12/20158Acceptable79.62.53.63081
08/13/20157Acceptable7914.32688
07/09/20153Acceptable74.50.12.83882
06/12/20153Acceptable71.20.13.7797
05/13/20151Acceptable60.10.23.443n/a
10/14/201420Acceptable66.21.61.75290
09/09/20141Acceptable76.70.32.84287
08/13/20149Acceptable77.80.52.33887
07/09/201411Acceptable77.30.132786
06/14/201419Acceptable69.20.33.75287
05/14/20148Acceptable57.80.15.73199
10/18/201312Acceptable66.61.62.67290
09/20/20137Acceptable72.60.33.74190
08/17/201312Acceptable77.10.12.46583
07/19/201315Acceptable83.40.13.16277
06/21/201328Acceptable660.1510895
06/01/20138Acceptable67.70.1526102
10/13/201211Acceptable64.50.75.23789
09/13/201216Acceptable78.82.53.62992
08/15/20127Acceptable81.422.71792
07/19/20129Acceptable81.72.92.42184
06/14/2012<1Acceptable72.40.11.83293
05/18/2012<1Acceptable62.20.12.72392
10/18/201110Acceptable61.40.11.511490
09/17/201153Acceptable66.40.11.328485
08/18/201113Acceptable79.50.31.64283
07/17/2011<1Acceptable79.30.13.7n/an/a
06/29/20116Acceptable75.80.14.73888
05/18/201123Acceptablen/an/an/an/an/a
10/14/201025Acceptable61.40.13.72981
09/13/2010166Beach Advisory74.20.85.32084
08/19/20101Acceptable81.8110.235109
07/20/201099Beach Advisory82.31.12.81585
06/17/20106Acceptable71.20.44.85984
05/23/20104Acceptable63.60.26.24199
10/21/200916Acceptable58.60.22.33188
09/16/200917Acceptable73.30.63.12183
08/22/200910Acceptable79.70.12.92680
08/03/200913Acceptablen/an/an/an/an/a
07/30/20094Acceptable770.13.64189
06/09/200913Acceptablen/an/an/an/an/a
05/17/20095Acceptablen/an/an/an/an/a
05/14/2009<1Acceptable59.40.17.128107
10/22/200832Acceptable60.61.329090
09/20/20083Acceptablen/an/an/an/an/a
08/06/20081Acceptablen/an/an/an/an/a
07/16/2008<1Acceptable78.50.32.22393
06/17/200813Acceptablen/an/an/an/an/a
05/21/20083Acceptable56.80.134893

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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