Water Quality
Water Quality > Tributary and Waterfront Data > Pocantico River > Briarcliff Manor- Above Pocantico Lake

Briarcliff Manor- Above Pocantico Lake

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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

48 Samples taken

Sample Date [i] Enterococcus Count
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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
09/21/2019 241 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/17/2019 537 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/15/2019 223 Beach Advisory 0.0 0.0 0.7 0.0 0.7
05/18/2019 31 Acceptable 0.0 0.0 0.0 0.0 0.1
10/27/2018 4611 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/15/2018 231 Beach Advisory 0.0 0.0 0.0 1.1 1.1
08/18/2018 19863 Beach Advisory 0.5 1.4 0.0 0.0 1.9
06/16/2018 1733 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/19/2018 387 Beach Advisory 0.2 0.0 0.3 0.9 1.4
10/21/2017 58 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2017 548 Beach Advisory 0.0 0.0 0.4 0.0 0.5
08/19/2017 2420 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/15/2017 2420 Beach Advisory 0.0 0.5 0.4 0.0 0.8
06/17/2017 203 Beach Advisory 0.0 0.2 0.0 0.0 0.2
05/20/2017 185 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/08/2016 32 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2016 1734 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2016 >2420 Beach Advisory 0.0 0.4 0.0 0.3 0.7
07/09/2016 770 Beach Advisory 0.0 0.0 0.4 0.0 0.4
06/11/2016 189 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 132 Beach Advisory 0.0 0.2 0.0 0.0 0.2
10/03/2015 >2420 Beach Advisory 0.4 0.5 0.1 1.3 2.2
09/05/2015 45 Acceptable 0.0 0.0 0.0 0.0 0.0
08/01/2015 365 Beach Advisory 0.0 0.7 0.0 0.0 0.7
07/04/2015 387 Beach Advisory 0.0 0.0 0.0 0.6 0.6
06/06/2015 816 Beach Advisory 0.1 0.0 0.0 0.0 0.1
05/02/2015 3 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 >2420 Beach Advisory 0.8 0.0 0.0 0.0 0.8
09/06/2014 139 Beach Advisory 0.1 0.0 0.0 0.0 0.1
08/02/2014 >2420 Beach Advisory 0.2 0.2 0.0 0.0 0.4
07/05/2014 770 Beach Advisory 0.0 0.1 1.4 1.5 3.0
06/07/2014 228 Beach Advisory 0.0 0.0 0.5 0.2 0.6
05/03/2014 57 Acceptable 0.0 0.0 0.3 1.4 1.7
10/12/2013 104 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/14/2013 2420 Beach Advisory 0.0 0.1 1.7 0.0 1.8
08/10/2013 1120 Beach Advisory 0.0 0.3 0.1 0.0 0.4
07/13/2013 980 Beach Advisory 0.0 0.1 0.0 0.2 0.4
06/15/2013 270 Beach Advisory 0.0 0.3 0.7 0.0 1.0
05/04/2013 50 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 816 Beach Advisory 0.0 0.0 1.2 0.3 1.5
09/08/2012 >2420 Beach Advisory 1.5 0.0 0.0 0.5 2.0
08/04/2012 1414 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2012 308 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/02/2012 >2420 Beach Advisory 0.9 0.0 0.0 0.0 1.0
05/12/2012 80 Beach Advisory 0.0 0.0 0.3 0.7 1.0
11/06/2011 57 Acceptable 0.0 0.0 0.0 0.0 0.0
11/04/2010 >2420 Beach Advisory 1.1 0.0 0.0 0.0 1.1
06/12/2010 10 Acceptable 0.0 0.0 0.0 0.1 0.1

Entero Count (fecal indicator) and Rainfall Correlation

48 Samples taken

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 citizen scientists trained by Riverkeeper, 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:

This site is located about one mile north of Pocantico Lake in a low density residential area that includes horse stables.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000; NYSDEC Region 3: 914-428-2505

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