Piermont- Old Draw Bridge

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

35 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
07/15/2017 7701 Beach Advisory 0.0 0.7 0.1 0.0 0.8
06/17/2017 6867 Beach Advisory 0.0 0.2 0.0 0.1 0.3
05/20/2017 4611 Beach Advisory 0.0 0.1 0.0 0.0 0.2
10/08/2016 >2420 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 >2420 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 >2420 Beach Advisory 0.0 0.2 0.0 0.0 0.2
10/03/2015 >24196 Beach Advisory 0.2 0.2 0.1 1.2 1.8
09/05/2015 2909 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/01/2015 6488 Beach Advisory 0.0 0.0 1.5 0.0 1.5
07/04/2015 448 Beach Advisory 0.0 0.0 0.0 1.1 1.1
06/06/2015 2142 Beach Advisory 0.4 0.0 0.0 0.0 0.4
05/02/2015 285 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/04/2014 364 Beach Advisory 0.1 0.0 0.0 0.0 0.1
09/06/2014 243 Beach Advisory 0.9 0.0 0.0 0.0 0.9
08/02/2014 >24196 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/05/2014 2851 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/07/2014 364 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/03/2014 292 Beach Advisory 0.0 0.0 0.4 3.0 3.4
10/12/2013 121 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/14/2013 4352 Beach Advisory 0.0 2.1 2.0 0.0 4.2
08/10/2013 5475 Beach Advisory 0.1 0.6 0.3 0.0 0.9
07/13/2013 168 Beach Advisory 0.3 0.1 0.1 0.1 0.6
06/15/2013 677 Beach Advisory 0.0 0.6 0.6 0.1 1.3
05/04/2013 31 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 1169 Beach Advisory 0.0 0.0 1.0 0.4 1.4
09/08/2012 682 Beach Advisory 1.0 0.0 0.1 0.4 1.5
08/04/2012 199 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2012 580 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/02/2012 >24196 Beach Advisory 0.7 0.0 0.0 0.0 0.7
05/12/2012 364 Beach Advisory 0.0 0.4 0.3 0.2 0.9
11/06/2011 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/28/2011 345 Beach Advisory 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

35 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:

Sailboats are anchored in the creek a short distance downstream of this site, which is adjacent to a playground near the Old Draw Bridge. Just upstream of this site, there is residential development on both banks of the Creek, and forested buffer past the residential strip. Downstream of this site, the Creek enters Piermont Marsh.

Agencies Responsible:

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

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