Water Quality
Water Quality > Tributary and Waterfront Data > Esopus Creek > Lake Katrine- Leggs Mill Bridge

Lake Katrine- Leggs Mill Bridge

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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

77 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
10/03/2023 32 Acceptable 0.0 0.0 0.2 0.1 0.4
09/12/2023 133 Beach Advisory 0.0 0.3 0.0 0.2 0.5
08/08/2023 1046 Beach Advisory 0.0 0.1 0.1 0.1 0.4
07/18/2023 488 Beach Advisory 0.0 0.2 0.9 0.1 1.2
06/06/2023 34 Acceptable 0.0 0.0 0.0 0.0 0.0
05/23/2023 48 Acceptable 0.0 0.3 0.4 0.1 0.9
10/04/2022 15 Acceptable 0.0 0.0 0.0 0.0 0.0
09/06/2022 >2420 Beach Advisory 1.3 1.0 0.5 0.0 2.8
08/02/2022 51 Acceptable 0.0 0.0 0.0 0.0 0.0
07/12/2022 131 Beach Advisory 0.0 1.7 1.0 0.1 2.8
06/01/2022 184 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/03/2022 17 Acceptable 0.0 0.2 0.3 0.4 1.0
10/14/2021 75 Beach Advisory 0.0 0.3 0.5 0.6 1.4
09/09/2021 >2420 Beach Advisory 0.3 0.6 0.2 0.3 1.3
08/12/2021 56 Acceptable 0.0 0.0 0.0 0.0 0.0
07/08/2021 >2420 Beach Advisory 1.3 0.0 0.1 0.0 1.4
06/10/2021 1120 Beach Advisory 0.0 0.3 0.3 0.0 0.6
05/13/2021 27 Acceptable 0.0 0.0 0.0 0.0 0.0
10/15/2020 63 Beach Advisory 0.0 0.0 0.7 0.0 0.7
09/17/2020 57 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2020 153 Beach Advisory 0.0 0.0 0.1 0.0 0.1
07/23/2020 260 Beach Advisory 0.0 0.2 0.0 0.1 0.3
06/30/2020 260 Beach Advisory 0.1 0.0 0.0 0.3 0.5
10/10/2019 727 Beach Advisory 0.0 0.0 0.1 0.7 0.8
09/12/2019 461 Beach Advisory 0.2 0.0 0.0 0.0 0.3
08/08/2019 1733 Beach Advisory 0.0 0.2 0.2 0.0 0.5
07/11/2019 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/13/2019 387 Beach Advisory 0.2 0.0 0.2 1.0 1.4
05/09/2019 31 Acceptable 0.0 0.0 0.4 0.1 0.4
10/11/2018 >2420 Beach Advisory 0.8 0.0 0.0 0.1 0.9
09/06/2018 411 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/09/2018 >2420 Beach Advisory 0.0 0.9 0.0 0.0 0.9
07/12/2018 1553 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/07/2018 921 Beach Advisory 0.0 0.0 0.0 0.3 0.3
05/10/2018 70 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/12/2017 397 Beach Advisory 0.0 0.0 0.0 0.7 0.7
09/07/2017 411 Beach Advisory 0.1 0.5 0.1 0.0 0.7
08/10/2017 137 Beach Advisory 0.0 0.0 0.1 0.2 0.3
07/06/2017 13 Acceptable 0.0 0.0 0.0 0.0 0.0
06/08/2017 135 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/11/2017 17 Acceptable 0.0 0.0 0.0 0.0 0.0
10/13/2016 14 Acceptable 0.0 0.0 0.0 0.0 0.0
09/15/2016 127 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/18/2016 39 Acceptable 0.1 0.0 0.0 0.0 0.1
07/14/2016 435 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2016 326 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/19/2016 37 Acceptable 0.0 0.0 0.0 0.0 0.0
10/30/2015 1986 Beach Advisory 0.0 0.4 1.4 0.0 1.8
09/25/2015 15 Acceptable 0.0 0.0 0.0 0.0 0.0
08/28/2015 92 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/24/2015 11 Acceptable 0.0 0.0 0.0 0.0 0.0
06/26/2015 30 Acceptable 0.0 0.0 0.0 0.4 0.5
05/29/2015 11 Acceptable 0.0 0.0 0.3 0.0 0.4
10/24/2014 548 Beach Advisory 0.0 0.4 0.2 0.5 1.1
09/13/2014 11 Acceptable 0.0 0.0 0.0 0.0 0.0
08/22/2014 72 Beach Advisory 0.0 0.1 0.0 0.0 0.1
07/18/2014 86 Beach Advisory 0.0 0.0 0.2 0.7 0.9
06/23/2014 12 Acceptable 0.0 0.0 0.0 0.0 0.0
05/23/2014 214 Beach Advisory 0.1 0.3 0.0 0.0 0.4
10/24/2013 6 Acceptable 0.0 0.0 0.0 0.0 0.0
09/26/2013 8 Acceptable 0.0 0.0 0.0 0.0 0.0
08/22/2013 31 Acceptable 0.0 0.0 0.0 0.0 0.0
07/25/2013 128 Beach Advisory 0.0 0.0 0.8 0.5 1.3
06/27/2013 3 Acceptable 0.0 0.0 0.0 0.6 0.6
06/06/2013 63 Beach Advisory 0.0 0.0 0.0 0.1 0.1
10/18/2012 4 Acceptable 0.0 0.0 0.0 0.3 0.3
09/18/2012 64 Beach Advisory 1.2 0.0 0.0 0.1 1.3
08/21/2012 31 Acceptable 0.0 0.0 0.0 0.1 0.1
07/24/2012 816 Beach Advisory 0.1 0.2 0.0 0.0 0.3
06/19/2012 12 Acceptable 0.0 0.0 0.0 0.0 0.0
05/23/2012 125 Beach Advisory 0.0 0.3 0.9 0.0 1.2
04/24/2012 270 Beach Advisory 0.0 0.4 0.8 0.9 2.1
10/17/2011 42 Acceptable 0.0 0.0 0.0 1.1 1.1
09/21/2011 116 Beach Advisory 0.1 0.0 0.0 0.0 0.1
08/24/2011 9 Acceptable 0.0 0.0 0.0 0.9 0.9
07/15/2011 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/05/2011 56 Acceptable 0.0 0.0 0.7 0.0 0.7

Entero Count (fecal indicator) and Rainfall Correlation

77 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 trained by Riverkeeper, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

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 site is located in a residential area of Lake Katrine. West of the river, the area is agricultural. To the east, land use is a combination of forest and residential development.

Agencies Responsible:

Ulster County Dept. of Health: 845-340-3010; NYSDEC Region 3: 845-256-3000

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