Tappan- Route 303

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 770 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2016 >2420 Beach Advisory 0.0 0.2 0.0 0.0 0.3
08/13/2016 2420 Beach Advisory 0.0 0.6 0.1 0.1 0.8
07/09/2016 >2420 Beach Advisory 0.0 0.0 0.4 0.0 0.4
06/11/2016 1986 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 687 Beach Advisory 0.0 0.2 0.0 0.0 0.2
10/03/2015 >2420 Beach Advisory 0.2 0.2 0.1 1.2 1.8
09/05/2015 517 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/01/2015 411 Beach Advisory 0.0 0.0 1.5 0.0 1.5
07/04/2015 921 Beach Advisory 0.0 0.0 0.0 1.1 1.1
06/06/2015 >2420 Beach Advisory 0.4 0.0 0.0 0.0 0.4
05/02/2015 23 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 >2420 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/06/2014 866 Beach Advisory 0.9 0.0 0.0 0.0 0.9
08/02/2014 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/05/2014 1553 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/07/2014 687 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/03/2014 120 Beach Advisory 0.0 0.0 0.4 3.0 3.4
10/12/2013 649 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/14/2013 >2420 Beach Advisory 0.0 2.1 2.0 0.0 4.2
08/10/2013 >2420 Beach Advisory 0.1 0.6 0.3 0.0 0.9
07/13/2013 >2420 Beach Advisory 0.3 0.1 0.1 0.1 0.6
06/15/2013 479 Beach Advisory 0.0 0.6 0.6 0.1 1.3
05/04/2013 48 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 >2420 Beach Advisory 0.0 0.0 1.0 0.4 1.4
09/08/2012 1300 Beach Advisory 1.0 0.0 0.1 0.4 1.5
08/04/2012 1120 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2012 1203 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/02/2012 >2420 Beach Advisory 0.7 0.0 0.0 0.0 0.7
05/12/2012 326 Beach Advisory 0.0 0.4 0.3 0.2 0.9
11/06/2011 192 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/03/2011 461 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/28/2011 411 Beach Advisory 0.0 0.0 0.0 0.0 0.0

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:

This site is located just downstream of Sparkill Creek?s crossing with the Palisades Interstate Parkway. Upstream of here, the creek flows through a relatively sparsely developed section, before entering back into residential land use here.

Agencies Responsible:

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

2017 Fishermen's Ball
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