Water Quality > Tributary and Waterfront 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

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
10/27/20182613Beach Advisory0.
09/15/2018345Beach Advisory0.
08/18/201817329Beach Advisory0.
06/16/2018435Beach Advisory0.
05/19/20181300Beach Advisory0.
10/21/201798Beach Advisory0.
09/16/2017211Beach Advisory0.
08/19/20172420Beach Advisory0.
07/15/20172420Beach Advisory0.
06/17/2017235Beach Advisory0.
05/20/2017119Beach Advisory0.
10/08/2016275Beach Advisory0.
09/10/2016173Beach Advisory0.
08/13/2016>2420Beach Advisory0.
07/09/2016727Beach Advisory0.
06/11/2016403Beach Advisory0.
05/14/2016135Beach Advisory0.
10/03/2015>2420Beach Advisory0.
08/01/2015365Beach Advisory0.
07/04/2015326Beach Advisory0.
06/06/2015866Beach Advisory0.
10/04/2014727Beach Advisory0.
09/06/2014>2420Beach Advisory0.
08/02/20142420Beach Advisory0.
07/05/20141553Beach Advisory0.
06/07/2014200Beach Advisory0.
09/14/2013>2420Beach Advisory0.
08/10/2013579Beach Advisory0.
07/13/2013461Beach Advisory0.
06/15/2013146Beach Advisory0.
10/06/20121986Beach Advisory0.
09/08/2012>2420Beach Advisory1.
08/04/2012125Beach Advisory0.
06/02/2012>2420Beach Advisory0.
11/04/2010>2420Beach Advisory1.
06/12/2010249Beach 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:

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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