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

Briarcliff Manor- Below Pocantico Lake

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

44 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
10/27/2018175Beach Advisory0.
09/15/2018118Beach Advisory0.
08/18/201817329Beach Advisory0.
06/16/2018>2420Beach Advisory0.
05/19/2018613Beach Advisory0.
10/21/201762Beach Advisory0.
09/16/2017412Beach Advisory0.
08/19/2017575Beach Advisory0.
07/15/20171553Beach Advisory0.
06/17/2017344Beach Advisory0.
09/10/2016190Beach Advisory0.
08/13/20161986Beach Advisory0.
07/09/2016132Beach Advisory0.
06/11/2016>2420Beach Advisory0.
05/14/201681Beach Advisory0.
10/03/2015278Beach Advisory0.
06/06/2015687Beach Advisory0.
10/04/2014980Beach Advisory0.
09/06/2014172Beach Advisory0.
08/02/2014>2420Beach Advisory0.
07/05/20141203Beach Advisory0.
05/03/2014214Beach Advisory0.
10/12/2013113Beach Advisory0.
09/14/2013435Beach Advisory0.
08/10/2013921Beach Advisory0.
06/15/20131986Beach Advisory0.
10/06/2012>2420Beach Advisory0.
09/08/20121414Beach Advisory1.
08/04/2012980Beach Advisory0.
06/02/2012>2420Beach Advisory0.
05/12/2012134Beach Advisory0.
11/06/2011117Beach Advisory0.
11/04/20101414Beach Advisory1.
06/12/201091Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

44 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 1/4 mile below Pocantico Lake, where the river enters the Rockefeller State Park Preserve. The southern end of Pocantico Lake is dammed.

Agencies Responsible:

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

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