Water Quality > Tributary and Waterfront Data > Saw Mill River > New Castle- Duck Pond spillway

New Castle- Duck Pond spillway

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

32 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
07/12/2018253Beach Advisory0.
06/28/2018>24196Beach Advisory1.
05/31/201863Beach Advisory0.
05/17/20182909Beach Advisory0.
10/12/20171495Beach Advisory0.
08/03/201796Beach Advisory0.
07/20/201763Beach Advisory0.
06/22/201784Beach Advisory0.
06/08/201762Beach Advisory0.
09/15/2016140Beach Advisory0.
09/01/2016170Beach Advisory0.
06/30/2016250Beach Advisory0.
09/24/201584Beach Advisory0.
09/10/2015269Beach Advisory0.
08/27/20151852Beach Advisory0.
08/13/2015239Beach Advisory0.
07/30/20151437Beach Advisory0.
07/16/2015149Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

32 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:

This sampling site is located below the spillway of Duck Pond. This site is located below the spillway of Duck Pond. The area around Duck Pond is residential, but quite sparsely developed.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000; NYSDEC Region 3: 914-428-2505

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