Water Quality
Water Quality > Sparkill Creek > Blauvelt- Tackamack trib at Greenbush Rd Bridge

Blauvelt- Tackamack trib at Greenbush Rd Bridge

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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

59 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
06/21/2022 51 Acceptable 0.0 0.0 0.0 0.0 0.0
05/17/2022 31 Acceptable 0.0 0.1 0.1 0.1 0.3
09/27/2021 31 Acceptable 0.0 0.0 0.0 0.8 0.8
08/24/2021 51 Acceptable 0.0 0.0 0.0 0.0 0.1
07/27/2021 246 Beach Advisory 0.0 0.0 0.7 0.0 0.7
06/29/2021 857 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/25/2021 98 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/27/2020 31 Acceptable 0.0 0.1 0.0 0.0 0.1
09/22/2020 388 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/25/2020 84 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2020 2282 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/26/2019 20 Acceptable 0.0 0.0 0.0 0.1 0.1
09/28/2019 142 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/17/2019 226 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/20/2019 628 Beach Advisory 0.0 0.0 0.5 0.7 1.2
06/15/2019 20 Acceptable 0.0 0.0 0.7 0.0 0.7
10/27/2018 95 Beach Advisory 0.6 0.0 0.0 0.0 0.6
09/15/2018 10 Acceptable 0.0 0.0 0.0 0.1 0.1
08/18/2018 1594 Beach Advisory 0.2 0.6 0.0 0.0 0.8
07/21/2018 292 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2018 108 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/19/2018 326 Beach Advisory 0.2 0.0 0.3 0.7 1.2
10/21/2017 97 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/16/2017 285 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/19/2017 609 Beach Advisory 0.0 0.5 0.0 0.0 0.5
07/15/2017 689 Beach Advisory 0.0 0.7 0.1 0.0 0.8
06/17/2017 3873 Beach Advisory 0.0 0.2 0.0 0.0 0.2
05/20/2017 10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/08/2016 33 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2016 163 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2016 517 Beach Advisory 0.0 0.6 0.1 0.1 0.8
06/11/2016 96 Beach Advisory 0.0 0.0 0.0 0.2 0.2
05/14/2016 24 Acceptable 0.0 0.2 0.0 0.0 0.2
10/03/2015 1553 Beach Advisory 0.6 0.6 0.1 1.0 2.2
09/05/2015 115 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/01/2015 397 Beach Advisory 0.0 0.0 1.5 0.0 1.5
07/04/2015 308 Beach Advisory 0.0 0.0 0.0 1.1 1.1
06/06/2015 1300 Beach Advisory 0.2 0.2 0.0 0.0 0.3
05/02/2015 5 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 1046 Beach Advisory 0.3 0.0 0.0 0.0 0.3
09/06/2014 86 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/02/2014 461 Beach Advisory 0.1 0.2 0.0 0.0 0.3
07/05/2014 1733 Beach Advisory 0.0 0.2 3.0 2.3 5.5
06/07/2014 139 Beach Advisory 0.0 0.0 0.5 0.0 0.5
05/03/2014 6 Acceptable 0.0 0.0 0.3 2.8 3.0
10/12/2013 133 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/14/2013 411 Beach Advisory 0.0 0.1 0.0 0.0 0.1
08/10/2013 91 Beach Advisory 0.0 0.5 0.4 0.0 0.9
07/13/2013 1203 Beach Advisory 0.2 0.2 0.0 0.1 0.5
06/15/2013 109 Beach Advisory 0.0 0.2 0.7 0.0 0.9
05/04/2013 14 Acceptable 0.0 0.0 0.0 0.0 0.0
10/06/2012 770 Beach Advisory 0.0 0.0 1.7 0.5 2.2
09/08/2012 65 Beach Advisory 0.7 0.0 0.0 0.5 1.2
08/04/2012 48 Acceptable 0.0 0.0 0.0 0.0 0.0
07/14/2012 261 Beach Advisory 0.1 0.0 0.0 0.0 0.1
05/12/2012 70 Beach Advisory 0.0 0.0 0.3 0.4 0.7
11/06/2011 52 Acceptable 0.0 0.0 0.0 0.0 0.0
09/03/2011 65 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/28/2011 58 Acceptable 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

59 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, located where the Tackamack tributary exits its forested upper watershed and enters an area dominated by residential land use, is just upstream of the point where the tributary joins Sparkill Creek.

Agencies Responsible:

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