Water Quality > Tributary and Waterfront Data > Sparkill Creek > Blauvelt- Tackamack trib at Greenbush Rd Bridge

Blauvelt- Tackamack trib at Greenbush Rd 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

45 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.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
10/27/201895Beach Advisory0.
08/18/20181594Beach Advisory0.
07/21/2018292Beach Advisory0.
06/16/2018108Beach Advisory0.
05/19/2018326Beach Advisory0.
10/21/201797Beach Advisory0.
09/16/2017285Beach Advisory0.
08/19/2017609Beach Advisory0.
07/15/2017689Beach Advisory0.
06/17/20173873Beach Advisory0.
09/10/2016163Beach Advisory0.
08/13/2016517Beach Advisory0.
07/09/2016>2420Beach Advisory0.
06/11/201696Beach Advisory0.
10/03/20151553Beach Advisory0.
09/05/2015115Beach Advisory0.
08/01/2015397Beach Advisory0.
07/04/2015308Beach Advisory0.
06/06/20151300Beach Advisory0.
10/04/20141046Beach Advisory0.
09/06/201486Beach Advisory0.
08/02/2014461Beach Advisory0.
07/05/20141733Beach Advisory0.
06/07/2014139Beach Advisory0.
10/12/2013133Beach Advisory0.
09/14/2013411Beach Advisory0.
08/10/201391Beach Advisory0.
07/13/20131203Beach Advisory0.
06/15/2013109Beach Advisory0.
10/06/2012770Beach Advisory0.
09/08/201265Beach Advisory0.
07/14/2012261Beach Advisory0.
06/02/2012>2420Beach Advisory0.
05/12/201270Beach Advisory0.
09/03/201165Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

45 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

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