Water Quality
Water Quality > Tributary and Waterfront Data > Mohawk River > Herkimer at I-90 bridge

Herkimer at I-90 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

32 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
10/15/2023 96 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/17/2023 31 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2023 1203 Beach Advisory 0.0 0.0 0.7 0.0 0.7
07/06/2023 270 Beach Advisory 0.0 0.0 0.1 0.0 0.1
06/07/2023 173 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/22/2023 135 Beach Advisory 0.0 0.0 0.1 0.0 0.1
10/16/2022 65 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/18/2022 14 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2022 124 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/10/2022 326 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/12/2022 649 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/24/2022 921 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/24/2021 40 Acceptable 0.0 0.0 0.0 0.0 0.0
09/26/2021 73 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/29/2021 195 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/31/2021 2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/16/2021 143 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/24/2021 49 Acceptable 0.0 0.0 0.0 0.0 0.0
10/25/2020 17 Acceptable 0.0 0.0 0.0 0.0 0.0
07/17/2020 >2420 Beach Advisory 0.3 0.3 0.0 0.3 0.9
06/23/2020 687 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/13/2019 70 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/15/2019 24 Acceptable 0.0 0.0 0.0 0.0 0.0
08/11/2019 62 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/14/2019 55 Acceptable 0.0 0.0 0.0 0.0 0.0
06/10/2019 36 Acceptable 0.0 0.0 0.0 0.0 0.0
05/14/2019 >2420 Beach Advisory 0.2 0.6 0.4 0.0 1.1
10/15/2018 87 Beach Advisory 0.0 0.0 0.1 0.0 0.1
09/17/2018 20 Acceptable 0.0 0.0 0.0 0.0 0.0
07/22/2018 >2420 Beach Advisory 0.1 0.0 0.0 0.0 0.1
05/18/2018 179 Beach Advisory 0.0 0.0 0.0 0.1 0.1
10/22/2017 139 Beach Advisory 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

32 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

Agencies Responsible:

NYS Dept. of Health, Herkimer District Office: 315-866-6879; NYSDEC Region 6: 315-785-2239

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