Water Quality
Water Quality > Tributary and Waterfront Data > Pocantico River > Briarcliff Manor- Stone Creek Lane

Briarcliff Manor- Stone Creek Lane

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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

49 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
10/19/2019 160 Beach Advisory 0.0 0.0 0.0 2.9 3.0
09/21/2019 336 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/17/2019 457 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/20/2019 504 Beach Advisory 0.0 0.0 0.3 1.1 1.4
06/15/2019 63 Beach Advisory 0.0 0.0 0.7 0.0 0.7
05/18/2019 10 Acceptable 0.0 0.0 0.0 0.0 0.1
10/27/2018 1317 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/15/2018 201 Beach Advisory 0.0 0.0 0.0 1.1 1.1
08/18/2018 12997 Beach Advisory 0.5 1.4 0.0 0.0 1.9
06/16/2018 921 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/19/2018 816 Beach Advisory 0.2 0.0 0.3 0.9 1.4
10/21/2017 228 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/16/2017 146 Beach Advisory 0.0 0.0 0.4 0.0 0.5
08/19/2017 770 Beach Advisory 0.0 0.4 0.0 0.0 0.4
07/15/2017 4884 Beach Advisory 0.0 0.5 0.4 0.0 0.8
06/17/2017 792 Beach Advisory 0.0 0.2 0.0 0.0 0.2
05/20/2017 50 Acceptable 0.0 0.0 0.0 0.0 0.0
10/08/2016 435 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2016 1553 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 435 Beach Advisory 0.0 0.0 0.4 0.0 0.4
06/11/2016 687 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 60 Acceptable 0.0 0.2 0.0 0.0 0.2
10/03/2015 1203 Beach Advisory 0.4 0.5 0.1 1.3 2.2
09/05/2015 548 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/01/2015 649 Beach Advisory 0.0 0.7 0.0 0.0 0.7
07/04/2015 96 Beach Advisory 0.0 0.0 0.0 0.6 0.6
06/06/2015 285 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 921 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 1120 Beach Advisory 0.0 0.1 1.4 1.5 3.0
06/07/2014 206 Beach Advisory 0.0 0.0 0.5 0.2 0.6
05/03/2014 185 Beach Advisory 0.0 0.0 0.3 1.4 1.7
10/12/2013 42 Acceptable 0.0 0.0 0.0 0.0 0.0
09/14/2013 435 Beach Advisory 0.0 0.1 1.7 0.0 1.8
08/10/2013 345 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 727 Beach Advisory 0.0 0.3 0.7 0.0 1.0
05/04/2013 24 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 1120 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 921 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2012 378 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/02/2012 1986 Beach Advisory 0.9 0.0 0.0 0.0 1.0
05/12/2012 48 Acceptable 0.0 0.0 0.3 0.7 1.0
11/06/2011 18 Acceptable 0.0 0.0 0.0 0.0 0.0
11/04/2010 >2420 Beach Advisory 1.0 0.0 0.0 0.0 1.0

Entero Count (fecal indicator) and Rainfall Correlation

49 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 at the upper end of the watershed, near the Taconic State Parkway.

Agencies Responsible:

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

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