Water Quality > Tributary and Waterfront Data > Quassaick Creek > New Windsor- Silver Stream above Lake Washington res

New Windsor- Silver Stream above Lake Washington res

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

18 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
10/15/2015440Beach Advisory0.
10/01/20151300Beach Advisory0.
09/17/20151100Beach Advisory0.
09/03/2015150Beach Advisory0.
08/20/2015370Beach Advisory0.
07/23/20152600Beach Advisory0.
07/09/2015600Beach Advisory0.
06/25/2015500Beach Advisory0.
05/28/20151300Beach Advisory0.
05/14/2015360Beach Advisory0.
10/16/2014>2420Beach Advisory1.
09/18/2014210Beach Advisory0.
09/09/2014420Beach Advisory0.
08/21/2014>2420Beach Advisory0.
08/07/20141300Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

18 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 and processed at laboratories that aren't directly affiliated with Riverkeeper, using methods and study designs that are consistent with Riverkeeper's Hudson River and Citizen Testing programs.

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:

Silver Stream is a feeder stream for Washington Lake, which provides drinking water for the City of Newburgh.

Agencies Responsible:

Orange County Dept. of Health: 845-291-2331; NYSDEC Region 3: 845-256-3000

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