Rotterdam- Lock 8

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

29 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.

Quality Rain, day of (in) Prior Day 2 Days Prior 3 Days Prior Rain 4 Days Total Rain
Sort Sort Sort Sort Sort Sort Sort Sort
07/14/2019 60 Acceptable 0.0 0.0 0.0 0.0 0.0
06/10/2019 12 Acceptable 0.0 0.0 0.0 0.0
05/14/2019 2420 Beach Advisory 0.2 0.7 0.4 0.0 1.4
10/15/2018 47 Acceptable 0.0 0.0 0.2 0.0 0.2
09/17/2018 169 Beach Advisory 0.0 0.0 0.0 0.1 0.1
08/19/2018 1046 Beach Advisory 0.0 0.1 0.9 0.0 1.0
07/22/2018 40 Acceptable 0.3 0.0 0.0 0.0 0.3
06/18/2018 2 Acceptable 0.0 0.0 0.0 0.1 0.1
05/18/2018 1 Acceptable 0.0 0.0 0.0 0.2 0.2
10/23/2017 1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/18/2017 1 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2017 7 Acceptable 0.0 0.0 0.0 0.8 0.8
07/17/2017 19 Acceptable 0.0 0.0 0.0 0.0 0.0
06/17/2017 11 Acceptable 0.0 0.8 0.0 0.0 0.8
05/22/2017 15 Acceptable 0.2 0.0 0.0 0.1 0.3
10/22/2016 6 Acceptable 0.9 0.1 0.7 0.0 1.8
09/19/2016 2 Acceptable 0.5 0.3 0.0 0.0 0.8
08/20/2016 4 Acceptable 0.0 0.0 0.0 0.0 0.0
08/02/2016 727 Beach Advisory 1.8 0.0 1.1 0.0 2.9
07/29/2016 36 Acceptable 0.4 0.0 0.0 0.0 0.4
07/27/2016 53 Acceptable 0.0 0.0 0.0 0.0 0.0
07/18/2016 5 Acceptable 0.0 0.5 0.0 0.0 0.6
07/05/2016 435 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/20/2016 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
05/25/2016 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/17/2015 2 Acceptable 0.0 0.0 0.0 0.0 0.0
09/14/2015 18 Acceptable 0.0 0.7 1.3 0.1 2.2
08/17/2015 <1 Acceptable 0.0 0.0 0.1 0.3 0.4
07/13/2015 8 Acceptable 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

29 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:

Part of the Canalway trail, this site has a boat launch beach, and fishing access.

Agencies Responsible:

Schenectady County Dept. of Health: 518-386-2818; NYSDEC Region 4: 518-357-2068

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