Blauvelt- Clausland Arm

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
10/27/20185172Beach Advisory0.
09/15/201886Beach Advisory0.
08/18/20182142Beach Advisory0.
07/21/2018391Beach Advisory0.
06/16/20181300Beach Advisory0.
05/19/20181986Beach Advisory0.
10/21/2017109Beach Advisory0.
09/16/2017181Beach Advisory0.
08/19/20171723Beach Advisory0.
07/15/20172310Beach Advisory0.
06/17/20171725Beach Advisory0.
05/20/2017295Beach Advisory0.
10/08/20161300Beach Advisory0.
09/10/20161046Beach Advisory0.
08/13/20161733Beach Advisory0.
07/09/20161120Beach Advisory0.
06/11/2016980Beach Advisory0.
05/14/2016179Beach Advisory0.
10/03/2015>2420Beach Advisory0.
09/05/2015488Beach Advisory0.
08/01/2015435Beach Advisory0.
07/04/20151414Beach Advisory0.
06/06/2015>2420Beach Advisory0.
10/04/20141553Beach Advisory0.
09/06/2014308Beach Advisory0.
08/02/2014>2420Beach Advisory0.
07/05/20141986Beach Advisory0.
06/07/2014613Beach Advisory0.
05/03/201464Beach Advisory0.
10/12/2013>2420Beach Advisory0.
09/14/2013>2420Beach Advisory0.
08/10/2013816Beach Advisory0.
07/13/2013>2420Beach Advisory0.
06/15/2013649Beach Advisory0.
10/06/2012866Beach Advisory0.
09/08/20121414Beach Advisory0.
08/04/2012517Beach Advisory0.
07/14/20121300Beach Advisory0.
06/02/2012>2420Beach Advisory0.
05/12/2012166Beach Advisory0.
11/06/201166Beach Advisory0.
09/03/201199Beach Advisory0.
05/28/201189Beach 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 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:

The Clausland Arm is the main stem of Sparkill Creek. This sampling site and the Blauvelt Arm trib sampling site are located side-by-side, just upstream of the confluence of these two branches of the Creek. This sampling site is located in a forested area between residences and an office building.

Agencies Responsible:

Rockland County Dept. of Health: 845-364-2900; NYSDEC Region 3: 914-428-2505

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