Water Quality
Water Quality > Tributary and Waterfront Data > Sparkill Creek > Tappan- Route 303

Tappan- Route 303

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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

53 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
10/25/2022 3448 Beach Advisory 0.0 0.4 0.0 0.0 0.4
09/29/2022 110 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/24/2022 160 Beach Advisory 0.0 0.0 0.6 0.0 0.6
06/21/2022 275 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/17/2022 160 Beach Advisory 0.0 0.1 0.1 0.1 0.3
10/18/2021 313 Beach Advisory 0.0 0.0 0.4 0.0 0.4
09/27/2021 108 Beach Advisory 0.0 0.0 0.0 0.8 0.8
08/24/2021 934 Beach Advisory 0.0 0.0 0.0 0.0 0.1
07/27/2021 315 Beach Advisory 0.0 0.0 0.7 0.0 0.7
06/29/2021 318 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/25/2021 134 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/27/2020 75 Beach Advisory 0.0 0.1 0.0 0.0 0.1
09/22/2020 243 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/25/2020 388 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2020 341 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/26/2019 1010 Beach Advisory 0.0 0.0 0.0 0.1 0.1
09/28/2019 788 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/17/2019 743 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/20/2019 1500 Beach Advisory 0.0 0.0 0.5 0.7 1.2
06/15/2019 4884 Beach Advisory 0.0 0.0 0.7 0.0 0.7
05/18/2019 63 Beach Advisory 0.0 0.0 0.0 0.0 0.1
10/27/2018 7215 Beach Advisory 0.4 0.0 0.0 0.0 0.4
09/15/2018 185 Beach Advisory 0.0 0.0 0.0 0.2 0.2
07/21/2018 733 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2018 1300 Beach Advisory 0.0 0.0 0.0 0.0 0.1
10/21/2017 216 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/16/2017 417 Beach Advisory 0.0 0.0 0.3 0.0 0.3
08/19/2017 24196 Beach Advisory 0.0 0.5 0.0 0.0 0.5
07/15/2017 4611 Beach Advisory 0.0 0.7 0.1 0.0 0.8
06/17/2017 3076 Beach Advisory 0.0 0.2 0.0 0.1 0.3
05/20/2017 512 Beach Advisory 0.0 0.1 0.0 0.0 0.2
10/08/2016 770 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2016 2420 Beach Advisory 0.0 0.6 0.1 0.1 0.8
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
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
05/02/2015 23 Acceptable 0.0 0.0 0.0 0.0 0.0
09/06/2014 866 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 0.5 0.0 0.5
05/03/2014 120 Beach Advisory 0.0 0.0 0.3 2.8 3.0
10/12/2013 649 Beach Advisory 0.0 0.0 0.0 0.0 0.0
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
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
05/12/2012 326 Beach Advisory 0.0 0.4 0.3 0.7 1.4
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

53 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

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