Water Quality
Water Quality > Tributary and Waterfront Data > Sparkill Creek > Tappan- State Line

Tappan- State Line

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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

55 Samples taken

Sample Date [i] Enterococcus Count
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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
10/27/2020 373 Beach Advisory 0.0 0.1 0.0 0.0 0.1
09/22/2020 171 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/25/2020 132 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2020 435 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/26/2019 428 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/28/2019 281 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/17/2019 865 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/20/2019 820 Beach Advisory 0.0 0.0 0.5 0.7 1.2
06/15/2019 5475 Beach Advisory 0.0 0.0 0.7 0.0 0.7
05/18/2019 75 Beach Advisory 0.0 0.0 0.0 0.0 0.1
10/27/2018 9208 Beach Advisory 0.4 0.0 0.0 0.0 0.4
09/15/2018 199 Beach Advisory 0.0 0.0 0.0 0.2 0.2
08/18/2018 >24196 Beach Advisory 0.6 1.1 0.0 0.0 1.6
07/21/2018 480 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2018 1733 Beach Advisory 0.0 0.0 0.0 0.0 0.1
05/19/2018 >2420 Beach Advisory 0.3 0.0 0.2 0.6 1.1
10/21/2017 933 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/16/2017 435 Beach Advisory 0.0 0.0 0.3 0.0 0.3
08/19/2017 3448 Beach Advisory 0.0 0.5 0.0 0.0 0.5
07/15/2017 3873 Beach Advisory 0.0 0.7 0.1 0.0 0.8
06/17/2017 4611 Beach Advisory 0.0 0.2 0.0 0.1 0.3
05/20/2017 1201 Beach Advisory 0.0 0.1 0.0 0.0 0.2
10/08/2016 1414 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 1553 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/14/2016 980 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 130 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/01/2015 387 Beach Advisory 0.0 0.0 1.5 0.0 1.5
07/04/2015 >2420 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 26 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 >2420 Beach Advisory 0.5 0.0 0.0 0.0 0.5
09/06/2014 387 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/02/2014 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/05/2014 2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/07/2014 1986 Beach Advisory 0.0 0.0 0.5 0.0 0.5
05/03/2014 153 Beach Advisory 0.0 0.0 0.3 2.8 3.0
10/12/2013 361 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/14/2013 >2420 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/10/2013 1986 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 1553 Beach Advisory 0.0 0.6 0.6 0.1 1.3
05/04/2013 49 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 1986 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 1046 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 365 Beach Advisory 0.0 0.4 0.3 0.7 1.4
11/06/2011 112 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/03/2011 178 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/28/2011 387 Beach Advisory 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

55 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 in a commercial strip where Sparkill Creek parallels the New York-New Jersey state line. There is a wooded buffer that forms a narrow strip on the New Jersey side of the Creek, but is considerably wider on the New York side.

Agencies Responsible:

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

Tell Gov. Hochul to block invasive species at the Erie and Champlain canals
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