Water Quality
Water Quality > Tributary and Waterfront Data > Saw Kill > Milan (T)- Rock City

Milan (T)- Rock City

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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

42 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
10/14/2023 23 Acceptable 0.0 0.0 0.0 0.0 0.0
07/08/2023 40 Acceptable 0.0 0.1 0.0 0.0 0.1
06/10/2023 3 Acceptable 0.0 0.2 0.1 0.0 0.3
05/20/2023 24 Acceptable 0.0 0.0 0.0 0.0 0.0
10/15/2022 15 Acceptable 0.0 0.0 0.4 1.2 1.6
09/12/2022 2 Acceptable 0.0 0.0 0.0 0.0 0.1
08/12/2022 25 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2022 127 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/08/2021 31 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2021 79 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2021 20 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2021 72 Beach Advisory 0.5 1.6 0.0 0.0 2.2
06/11/2021 292 Beach Advisory 0.0 0.0 0.0 0.1 0.1
05/14/2021 1 Acceptable 0.0 0.0 0.0 0.0 0.0
04/09/2021 1 Acceptable 0.0 0.0 0.0 0.0 0.0
03/12/2021 9 Acceptable 0.0 0.0 0.0 0.0 0.0
02/12/2021 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/09/2020 3 Acceptable 0.0 0.0 0.0 0.0 0.0
09/11/2020 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/14/2020 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/11/2019 15 Acceptable 0.0 0.0 0.0 0.1 0.1
09/13/2019 54 Acceptable 0.0 0.2 0.0 0.0 0.2
08/09/2019 13 Acceptable 0.0 0.0 0.5 0.1 0.7
07/12/2019 46 Acceptable 0.0 0.0 0.0 0.0 0.0
06/14/2019 12 Acceptable 0.0 0.2 0.0 0.0 0.2
05/10/2019 1 Acceptable 0.0 0.0 0.0 0.1 0.1
10/12/2018 66 Beach Advisory 0.2 0.0 1.4 0.0 1.6
08/10/2018 158 Beach Advisory 0.5 0.0 0.0 0.9 1.3
07/13/2018 52 Acceptable 0.0 0.0 0.0 0.0 0.0
06/08/2018 4 Acceptable 0.0 0.0 0.0 0.0 0.0
05/11/2018 14 Acceptable 0.1 0.0 0.0 0.0 0.1
10/13/2017 29 Acceptable 0.0 0.0 0.0 0.0 0.1
09/08/2017 31 Acceptable 0.0 0.3 0.7 0.1 1.1
08/11/2017 36 Acceptable 0.4 0.6 0.0 0.0 0.9
07/14/2017 48 Acceptable 0.2 0.4 0.8 0.1 1.4
06/09/2017 12 Acceptable 0.0 0.0 0.0 0.6 0.6
05/12/2017 10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/21/2016 20 Acceptable 0.0 0.0 0.8 0.0 0.8
08/19/2016 146 Beach Advisory 0.0 0.1 0.0 0.0 0.1
07/15/2016 91 Beach Advisory 0.0 0.3 0.0 0.0 0.3
06/17/2016 11 Acceptable 0.0 0.0 0.0 0.0 0.0
05/20/2016 5 Acceptable 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

42 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 site is located near the intersection of Routes 199 and 308, near a fishing area. A site nearby was monitored by the Sawkill Creek Water Quality Surveillance Program beginning in the 1970's. These samples are collected by Saw Kill Watershed Community members and processed by the Bard Water Lab.

Agencies Responsible:

Dutchess County Dept. of Health: 845-486-3400; NYSDEC Region 3: 845-256-3000

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