West Harlem Piers Park kayak dock

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

83 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
06/29/201710Acceptable0.00.00.20.00.2
06/22/201786Beach Advisory0.00.00.01.41.4
06/08/2017<10Acceptable0.00.00.10.00.1
06/01/2017<10Acceptable0.00.00.10.10.2
09/29/201620Acceptable0.00.00.20.00.2
09/15/201620Acceptable0.00.60.00.00.6
09/08/2016<10Acceptable0.00.00.00.00.0
09/01/201620Acceptable0.50.00.00.00.5
08/25/201610Acceptable0.00.00.00.00.0
08/18/201620Acceptable0.00.00.10.00.2
08/11/201630Acceptable0.20.10.00.00.2
08/04/2016<10Acceptable0.00.00.00.00.0
07/28/201620Acceptable0.00.00.01.01.0
07/21/201610Acceptable0.00.00.00.40.4
07/14/201610Acceptable0.60.00.00.00.6
07/07/201610Acceptable0.00.00.70.51.2
06/30/201631Acceptable0.00.00.10.50.6
06/23/201620Acceptable0.00.00.00.00.0
06/16/201641Acceptable0.20.00.00.00.2
06/09/201675Beach Advisory0.00.50.00.91.4
06/02/201684Beach Advisory0.00.00.01.71.7
05/26/201610Acceptable0.00.00.20.00.2
05/19/201640Acceptable0.00.00.00.00.0
10/01/2015108Beach Advisory0.11.30.10.01.5
09/24/201520Acceptable0.00.00.00.00.0
09/17/201510Acceptable0.00.00.00.00.0
09/10/20151333Beach Advisory1.60.00.00.01.6
09/03/2015<10Acceptable0.00.00.00.00.0
08/27/2015<10Acceptable0.00.00.00.00.0
08/20/2015<10Acceptable0.00.00.30.00.3
08/13/2015<10Acceptable0.00.01.20.01.2
08/06/201510Acceptable0.00.00.40.00.4
07/30/2015383Beach Advisory2.00.00.00.42.3
07/23/201510Acceptable0.00.30.00.00.3
07/16/2015<10Acceptable0.00.10.40.00.5
07/09/2015<10Acceptable0.30.00.10.00.4
07/01/201563Beach Advisory0.40.00.00.30.7
06/25/201520Acceptable0.00.00.00.00.0
06/18/201510Acceptable0.00.00.30.60.8
06/11/201510Acceptable0.00.00.00.10.1
06/04/2015132Beach Advisory0.00.00.40.71.1
05/28/2015<10Acceptable0.00.10.00.00.1
05/21/2015<10Acceptable0.00.00.00.00.0
09/18/201420Acceptable0.00.00.40.00.4
09/11/2014<10Acceptable0.00.00.00.00.0
09/04/2014148Beach Advisory0.00.00.00.00.0
08/28/201410Acceptable0.00.00.00.00.0
08/21/2014256Beach Advisory0.40.00.00.00.4
08/14/201420Acceptable0.00.50.20.00.7
08/07/2014135Beach Advisory0.00.00.00.00.0
07/31/201410Acceptable0.00.00.00.20.2
07/24/2014256Beach Advisory0.00.20.00.00.2
07/17/2014<10Acceptable0.00.01.30.51.8
07/10/201452Acceptable0.10.40.00.00.5
07/02/201410Acceptable1.00.00.00.01.0
06/26/201431Acceptable0.10.10.00.00.2
06/19/2014313Beach Advisory0.20.00.00.00.2
06/12/201484Beach Advisory0.10.00.01.61.7
06/05/20145247Beach Advisory0.90.00.10.01.0
05/29/2014<10Acceptable0.00.00.00.00.0
10/03/201320Acceptable0.00.00.00.00.0
09/26/2013657Beach Advisory0.00.00.00.00.0
09/19/201320Acceptable0.00.00.00.00.0
09/12/201398Beach Advisory1.60.00.00.01.6
09/05/201375Beach Advisory0.00.00.00.10.1
08/29/2013301Beach Advisory0.00.40.00.00.5
08/22/201363Beach Advisory0.30.00.00.00.3
08/15/2013173Beach Advisory0.00.00.90.10.9
08/08/2013272Beach Advisory0.50.00.00.00.5
08/01/2013644Beach Advisory0.70.00.00.00.7
07/25/201330Acceptable0.00.00.30.10.4
07/11/201352Acceptable0.00.00.20.20.5
07/02/2013717Beach Advisory0.10.80.00.00.9
06/27/201320Acceptable0.20.10.00.00.3
06/20/2013231Beach Advisory0.00.00.20.00.2
06/13/201384Beach Advisory1.30.00.11.42.7
06/06/201352Acceptable0.10.00.00.91.0
05/30/2013384Beach Advisory0.00.00.50.00.5
05/23/201398Beach Advisory1.80.00.00.01.8
12/01/201112Acceptable0.00.00.50.00.5
11/21/2011<1Acceptable0.10.00.00.00.1
11/17/20114Acceptable0.70.70.00.01.4
10/27/201125Acceptable0.60.00.00.00.6

Entero Count (fecal indicator) and Rainfall Correlation

83 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:

Site Coordinator: Robert Coover. These samples are processed at The River Project.

Agencies Responsible:

NYCDEP: 212-639-9675; NYSDEC Region 2: 718-482-4933

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