Water Quality > Tributary and Waterfront Data > Sparkill Creek > Rockleigh, NJ- Sparkill Brook tributary

Rockleigh, NJ- Sparkill Brook tributary

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

45 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
10/27/20183609Beach Advisory0.
09/15/2018204Beach Advisory0.
08/18/2018>24196Beach Advisory0.
07/21/2018616Beach Advisory0.
06/16/20181120Beach Advisory0.
05/19/20181733Beach Advisory0.
10/21/201774Beach Advisory0.
09/16/2017457Beach Advisory0.
08/19/20171607Beach Advisory0.
07/15/20173255Beach Advisory0.
06/17/20174884Beach Advisory0.
05/20/2017315Beach Advisory0.
10/08/2016>2420Beach Advisory0.
09/10/2016>2420Beach Advisory0.
08/13/2016>2420Beach Advisory0.
07/09/20161986Beach Advisory0.
06/11/20161986Beach Advisory0.
05/14/20161986Beach Advisory0.
10/03/2015>2420Beach Advisory0.
09/05/2015>2420Beach Advisory0.
08/01/20151203Beach Advisory0.
07/04/20151414Beach Advisory0.
06/06/2015>2420Beach Advisory0.
10/04/2014>2420Beach Advisory0.
09/06/20141733Beach Advisory0.
08/02/2014>2420Beach Advisory0.
07/05/20142420Beach Advisory0.
06/07/20141986Beach Advisory0.
05/03/2014141Beach Advisory0.
10/12/2013197Beach Advisory0.
09/14/2013>2420Beach Advisory0.
08/10/2013>2420Beach Advisory0.
07/13/20131986Beach Advisory0.
06/15/20131553Beach Advisory0.
10/06/20121300Beach Advisory0.
09/08/20121733Beach Advisory1.
08/04/20121733Beach Advisory0.
07/14/2012866Beach Advisory0.
06/02/2012>2420Beach Advisory0.
05/12/2012162Beach Advisory0.
11/06/2011148Beach Advisory0.
09/03/2011548Beach Advisory0.
05/28/2011349Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

45 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 subtributary site is located on the Sparkill Brook, a tributary of Sparkill Creek that drains commercial areas and a golf course in New Jersey before entering New York and joining Sparkill Creek.

Agencies Responsible:


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