Water Quality > Tributary and Waterfront Data > Ossining Waterfront > Ossining- Louis Engel Park beach

Ossining- Louis Engel Park beach

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

38 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
SortSortSortSortSortSortSortSort
08/29/201741Acceptable0.00.00.00.00.0
08/29/201741Acceptable0.00.00.00.00.0
08/23/2017107Beach Advisory0.00.00.00.00.0
08/23/2017107Beach Advisory0.00.00.00.00.0
08/16/2017103Beach Advisory0.00.00.00.00.0
08/09/201725Acceptable0.00.00.00.00.0
08/02/201720Acceptable0.00.00.00.00.0
07/26/20178Acceptable0.00.00.00.00.0
07/19/20174Acceptable0.00.00.00.00.0
07/12/20178Acceptable0.00.00.00.00.0
07/05/201721Acceptable0.00.00.00.00.0
06/29/201739Acceptable0.00.10.00.00.1
06/21/201729Acceptable0.00.00.00.00.0
08/24/20164Acceptable0.00.00.00.90.9
08/17/201616Acceptable0.00.10.00.50.6
08/10/2016<1Acceptable0.10.00.00.00.1
08/03/20161Acceptable0.00.00.00.40.4
07/27/20167Acceptable0.00.01.20.01.2
07/20/20162Acceptable0.00.00.10.00.1
07/13/2016>1Acceptable0.00.00.00.00.0
07/06/201610Acceptable0.00.60.10.00.7
06/29/201655Acceptable0.00.40.60.01.0
06/22/20161Acceptable0.00.00.00.00.0
09/29/20152Acceptable0.00.00.00.00.0
09/24/20152Acceptable0.00.00.00.00.0
09/17/2015<1Acceptable0.00.00.00.00.0
09/09/20152Acceptable0.30.00.00.00.3
09/01/20151Acceptable0.00.00.00.00.0
08/25/20151Acceptable0.00.00.00.00.0
08/18/20157Acceptable0.00.00.00.00.0
08/12/20153Acceptable0.01.20.00.01.2
08/04/201518Acceptable0.10.00.00.00.1
07/28/201555Acceptable0.00.00.00.00.0
07/21/201533Acceptable0.50.00.00.30.8
07/15/2015122Beach Advisory0.20.00.00.00.2
07/08/201516Acceptable0.00.60.00.00.6
06/23/2015<1Acceptable0.00.00.00.00.0
06/18/20151Acceptable0.00.00.00.00.0

Entero Count (fecal indicator) and Rainfall Correlation

38 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:

Until the mid-1900's, Louis Engel Park was home to a Hudson River swimming beach, until the floating dock was deliberately sunk.

Agencies Responsible:

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

Enterococcus is an EPA-approved fecal contamination indicator.

Ossining waterfront samples are taken by Ossining High School students and processed at OHS, using methods and study designs that are consistent with Riverkeeper’s Hudson River and Community Water Quality Testing programs.

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