Water Quality
Water Quality > Tributary and Waterfront Data > Roeliff Jansen Kill > Copake- Robinson Pond outlet

Copake- Robinson Pond outlet

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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

35 Samples taken

Sample Date [i] Enterococcus Count
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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
10/15/2022 148 Beach Advisory 0.0 0.0 1.0 0.0 1.0
09/10/2022 45 Acceptable 0.0 0.0 0.0 0.0 0.0
08/13/2022 26 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2022 42 Acceptable 0.0 0.0 0.0 0.3 0.3
10/09/2021 5 Acceptable 0.0 0.0 0.0 0.0 0.0
09/11/2021 6 Acceptable 0.0 0.0 0.1 0.1 0.2
08/14/2021 19 Acceptable 0.0 0.0 0.0 0.0 0.1
07/10/2021 94 Beach Advisory 0.0 1.0 2.1 1.1 4.2
06/12/2021 17 Acceptable 0.1 0.0 0.0 0.0 0.1
10/10/2020 12 Acceptable 0.0 0.0 0.0 0.2 0.2
09/12/2020 6 Acceptable 0.0 0.0 0.6 0.0 0.6
07/11/2020 210 Beach Advisory 0.1 0.0 0.0 0.0 0.1
10/12/2019 6 Acceptable 0.0 0.0 0.0 0.1 0.1
09/14/2019 8 Acceptable 0.0 0.0 0.7 0.0 0.7
08/10/2019 61 Beach Advisory 0.0 0.0 0.1 0.8 1.0
07/13/2019 45 Acceptable 0.0 0.0 0.1 0.0 0.1
06/15/2019 64 Beach Advisory 0.0 0.0 0.3 0.0 0.3
05/11/2019 4 Acceptable 0.0 1.0 0.0 0.0 1.0
10/13/2018 54 Acceptable 0.1 0.0 1.7 0.0 1.8
09/15/2018 142 Beach Advisory 0.0 0.0 0.0 0.6 0.7
08/11/2018 26 Acceptable 0.8 0.0 0.0 0.5 1.3
07/14/2018 14 Acceptable 0.0 0.0 0.0 0.0 0.0
06/09/2018 17 Acceptable 0.0 0.0 0.0 0.0 0.0
05/12/2018 1 Acceptable 0.2 0.0 0.0 0.0 0.2
10/14/2017 53 Acceptable 0.0 0.0 0.1 0.0 0.2
09/09/2017 18 Acceptable 0.0 0.0 0.6 0.7 1.2
07/08/2017 2 Acceptable 0.0 1.0 0.0 0.0 1.0
06/10/2017 4 Acceptable 0.0 0.0 0.0 0.0 0.0
05/13/2017 34 Acceptable 0.0 0.0 0.0 0.0 0.0
10/15/2016 8 Acceptable 0.0 0.0 0.1 0.0 0.1
09/17/2016 24 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2016 35 Acceptable 0.0 0.0 0.0 0.0 0.0
07/15/2016 45 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2016 46 Acceptable 0.0 0.0 0.0 0.0 0.0
05/21/2016 2 Acceptable 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

35 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 point is located in the main stem of the Roe Jan, upstream of the confluence of the Bash Bish Brook, at the outlet of Robinson Pond. Onsite septic systems are thought to be sources of nutrient pollution in Robinson Pond. These samples are collected by Roe Jan watershed residents and processed by the Bard Water Lab. Site photo credit: Kaare Christian.

Agencies Responsible:

Columbia County Dept. of Health: (518) 828-3358; NYSDEC Region 3: 845-256-3000

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