Water Quality > Citizen Testing Data > Pocantico River > Briarcliff Manor- Long Hill Road

Briarcliff Manor- Long Hill Road

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

33 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
10/08/2016 275 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2016 173 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2016 >2420 Beach Advisory 0.0 0.4 0.0 0.4 0.8
07/09/2016 727 Beach Advisory 0.0 0.0 0.4 0.0 0.4
06/11/2016 403 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 135 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 35 Acceptable 0.0 0.0 0.0 0.0 0.0
08/01/2015 365 Beach Advisory 0.0 0.0 0.7 0.0 0.7
07/04/2015 326 Beach Advisory 0.0 0.0 0.0 0.6 0.6
06/06/2015 866 Beach Advisory 0.1 0.0 0.0 0.0 0.1
05/02/2015 6 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 727 Beach Advisory 0.8 0.0 0.0 0.0 0.8
09/06/2014 >2420 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 1553 Beach Advisory 0.0 0.1 1.4 1.5 3.0
06/07/2014 200 Beach Advisory 0.0 0.0 0.5 0.2 0.6
05/03/2014 55 Acceptable 0.0 0.0 0.3 1.4 1.7
10/12/2013 13 Acceptable 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 579 Beach Advisory 0.0 0.3 0.1 0.0 0.4
07/13/2013 461 Beach Advisory 0.0 0.1 0.0 0.2 0.4
06/15/2013 146 Beach Advisory 0.0 0.3 0.7 0.0 1.0
05/04/2013 18 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 1986 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 125 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2012 51 Acceptable 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 41 Acceptable 0.0 0.0 0.3 0.7 1.0
11/06/2011 26 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
06/12/2010 249 Beach Advisory 0.0 0.0 0.0 0.1 0.1

Entero Count (fecal indicator) and Rainfall Correlation

33 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:

Upstream of this site, the land use immediately adjacent to the river is mixed residential, commercial and forest, compared to downstream of here, where the Pocantico flows largely through parkland. Subtributaries that drain the Hardscrabble Wilderness area and that flow along the Taconic State Parkway enter the Pocantico from the east just upstream of this site.

Agencies Responsible:

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

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