Water Quality
Water Quality > Hudson River Estuary Data > Greene County & Columbia County Sites > Inbocht Bay

Inbocht Bay

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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

96 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
10/18/2023 14 Acceptable 0.0 0.0 0.0 0.0 0.1
09/20/2023 63 Beach Advisory 0.0 0.0 1.3 0.1 1.3
08/23/2023 21 Acceptable 0.0 0.0 0.0 0.0 0.0
07/19/2023 727 Beach Advisory 0.0 0.9 0.0 0.7 1.6
06/28/2023 10 Acceptable 0.0 0.2 1.2 0.4 1.8
05/03/2023 276 Beach Advisory 0.2 0.0 0.7 0.5 1.4
10/12/2022 16 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2022 5 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2022 4 Acceptable 0.0 0.0 0.1 0.3 0.3
07/17/2022 11 Acceptable 0.0 0.0 0.0 0.0 0.0
06/15/2022 17 Acceptable 0.0 0.0 0.0 0.0 0.0
05/25/2022 4 Acceptable 0.0 0.0 0.8 0.0 0.8
10/27/2021 >2420 Beach Advisory 0.0 1.0 0.9 0.0 1.9
09/15/2021 31 Acceptable 0.0 0.0 0.8 0.0 0.8
08/18/2021 17 Acceptable 0.0 0.0 0.0 0.0 0.0
07/21/2021 159 Beach Advisory 0.5 0.3 0.1 0.9 1.9
06/09/2021 37 Acceptable 0.0 0.6 0.0 0.0 0.6
05/20/2021 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/16/2020 12 Acceptable 0.6 0.0 0.0 0.5 1.1
09/20/2020 6 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2020 26 Acceptable 0.0 0.0 0.0 0.0 0.0
07/16/2020 19 Acceptable 0.0 0.0 0.1 0.0 0.1
06/18/2020 9 Acceptable 0.0 0.0 0.0 0.0 0.0
05/28/2020 6 Acceptable 0.0 0.0 0.0 0.0 0.0
10/10/2019 2 Acceptable 0.0 0.0 0.1 1.1 1.1
09/12/2019 6 Acceptable 0.0 0.0 0.0 0.0 0.0
08/08/2019 19 Acceptable 0.8 0.1 0.4 0.0 1.3
07/11/2019 5 Acceptable 0.0 0.0 0.0 0.0 0.0
06/07/2019 2 Acceptable 0.0 0.6 0.5 0.0 1.2
05/10/2019 2 Acceptable 0.2 0.0 0.0 0.1 0.3
10/12/2018 197 Beach Advisory 0.0 1.3 0.0 0.0 1.3
09/12/2018 23 Acceptable 0.1 0.1 0.9 0.0 1.1
08/16/2018 18 Acceptable 0.0 0.0 0.0 0.1 0.1
07/19/2018 8 Acceptable 0.0 0.0 0.4 0.0 0.4
06/15/2018 10 Acceptable 0.1 0.0 0.3 0.0 0.3
05/08/2018 11 Acceptable 0.0 0.0 0.3 0.0 0.3
10/18/2017 2 Acceptable 0.0 0.0 0.0 0.3 0.3
09/13/2017 3 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2017 1 Acceptable 0.0 0.0 0.0 0.0 0.0
07/12/2017 11 Acceptable 0.0 0.1 0.0 0.0 0.1
06/14/2017 2 Acceptable 0.0 0.0 0.0 0.0 0.0
05/17/2017 1 Acceptable 0.0 0.0 0.3 0.4 0.7
10/17/2016 3 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2016 2 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2016 5 Acceptable 0.0 0.2 0.0 0.0 0.2
07/15/2016 3 Acceptable 0.0 0.1 0.0 0.0 0.1
06/17/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
05/22/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/14/2015 6 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2015 10 Acceptable 0.9 1.2 0.1 0.4 2.6
08/14/2015 1 Acceptable 0.0 0.0 0.0 1.3 1.3
07/10/2015 5 Acceptable 0.0 1.2 0.0 0.5 1.6
06/13/2015 19 Acceptable 0.0 1.3 0.0 0.0 1.3
05/14/2015 4 Acceptable 0.0 0.0 0.1 0.0 0.1
10/15/2014 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2014 4 Acceptable 0.0 0.0 0.0 0.0 0.0
08/14/2014 10 Acceptable 0.0 0.1 0.0 0.0 0.1
07/10/2014 19 Acceptable 0.0 1.7 0.4 0.3 2.3
06/15/2014 1723 Beach Advisory 0.0 0.5 0.5 0.1 1.0
05/15/2014 11 Acceptable 0.0 0.1 0.0 0.0 0.1
10/20/2013 <1 Acceptable 0.0 0.0 0.2 0.0 0.2
09/21/2013 12 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2013 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/21/2013 26 Acceptable 0.0 0.0 0.0 0.0 0.0
06/23/2013 13 Acceptable 0.0 0.0 0.0 0.0 0.0
06/03/2013 32 Acceptable 0.0 1.1 0.1 0.0 1.1
10/14/2012 4 Acceptable 0.5 0.0 0.5 0.0 1.1
09/14/2012 4 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2012 5 Acceptable 0.1 0.0 0.2 0.0 0.3
07/20/2012 6 Acceptable 0.0 0.0 0.2 0.0 0.2
06/15/2012 3 Acceptable 0.0 0.0 0.2 0.5 0.7
05/19/2012 11 Acceptable 0.0 0.0 0.0 0.1 0.1
10/17/2011 1414 Beach Advisory 0.0 0.1 0.1 1.1 1.4
09/18/2011 16 Acceptable 0.0 0.0 0.1 0.3 0.4
08/20/2011 1 Acceptable 0.0 0.0 0.0 0.0 0.0
07/15/2011 4 Acceptable 0.0 0.0 0.3 0.0 0.3
07/01/2011 2 Acceptable 0.0 1.0 1.1 0.2 2.2
05/19/2011 411 Beach Advisory 0.8 0.2 0.1 0.5 1.7
10/15/2010 31 Acceptable 1.0 0.3 0.0 0.0 1.3
09/14/2010 11 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2010 16 Acceptable 0.1 0.1 0.0 0.0 0.2
07/19/2010 2 Acceptable 0.0 0.2 0.5 0.0 0.7
06/18/2010 7 Acceptable 0.0 0.0 0.2 0.0 0.3
05/24/2010 17 Acceptable 0.0 0.0 0.0 0.0 0.0
10/22/2009 9 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2009 12 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2009 23 Acceptable 0.3 1.0 1.5 0.0 2.8
07/31/2009 >2420 Beach Advisory 0.6 0.3 1.0 0.0 1.9
06/11/2009 12 Acceptable 0.3 0.0 0.5 0.0 0.9
05/16/2009 3 Acceptable 0.0 0.0 0.5 0.0 0.5
05/15/2009 26 Acceptable 0.0 0.5 0.0 0.0 0.5
10/23/2008 2 Acceptable 0.0 0.2 0.1 0.0 0.2
09/16/2008 4 Acceptable 0.0 0.0 0.3 0.1 0.3
08/08/2008 17 Acceptable 0.0 1.3 0.2 0.0 1.5
07/17/2008 9 Acceptable 0.0 0.0 0.0 0.1 0.1
05/22/2008 1 Acceptable 0.2 0.0 0.0 0.0 0.2

Entero Count (fecal indicator) and Rainfall Correlation

96 Samples taken

All Water Quality Parameters

96 Samples taken

Sample Date [i] Entero 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 [i] Temp (f)
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Temperature

Hudson River water temperature changes seasonally. Surface water temperature can change on small scales in the river reflecting natural and human influences.

[i] Salinity
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Salinity

Estuaries like the Hudson are where freshwaters in rivers meet the sea. Salinity tells us about the relative contribution of fresh and salt water within a particular region of the estuary. 

[i] Chlorophyll
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Chlorophyll

A measure of the amount of microscopic algae present in the water. High chlorophyll counts can mean high levels of the nutrients phosphorus and nitrogen, and the threat, or presence, of algae blooms.

[i] Turbidity
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Turbidity

Turbidity is a measure of the amount of fine particles suspended in the water. As turbidity rises, light penetration, a key factor for aquatic plants and algae, diminishes.

[i] Oxygen
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Oxygen

Oxygen concentrations in the water are closely connected to biological activities. Surface waters are typically in equilibrium with the atmosphere such that the oxygen concentration near the surface is close to fully saturated (100%).

Sort Sort Sort Sort Sort Sort Sort Sort
10/18/2023 14 Acceptable 14.66 0.09 1.64 10.3 107.5
09/20/2023 63 Beach Advisory 22.21 0.12 2.34 n/a n/a
08/23/2023 21 Acceptable 24.71 0.1 1.74 2 68.3
07/19/2023 727 Beach Advisory 25.87 0.1 4.26 27.5 91.4
06/28/2023 10 Acceptable 76.5 0.2 3.7 14.5 100.7
05/03/2023 276 Beach Advisory 53.1 0.1 2.4 28.9 100.3
10/12/2022 16 Acceptable 59.9 0.1 4.4 12 89.1
09/12/2022 5 Acceptable 75.4 0.1 4 8.8 72.8
08/21/2022 4 Acceptable 79.6 0.1 5.1 4.8 88.7
07/17/2022 11 Acceptable 79.5 0.1 5.9 9.8 95.2
06/15/2022 17 Acceptable 74.2 0.2 3.3 9.1 n/a
05/25/2022 4 Acceptable 70.7 0.1 6.8 13.4 n/a
10/27/2021 >2420 Beach Advisory 54.572 0.07 3.02 185 97.7
09/15/2021 31 Acceptable 72.14 0.09 3.88 10.6 86.3
08/18/2021 17 Acceptable 78.908 0.1 10.61 12.2 106.6
07/21/2021 159 Beach Advisory 74.372 0.1 6.63 27.6 98.8
06/09/2021 37 Acceptable 72.986 0.14 3.83 13.3 112.2
05/20/2021 2 Acceptable 68.288 0.11 10.38 21.2 142.9
10/16/2020 12 Acceptable 61.052 0.14 5.05 3.9 92.8
09/20/2020 6 Acceptable 66.902 0.14 4.73 7.3 95.9
08/16/2020 26 Acceptable 80.384 0.15 3.72 4.8 80.5
07/16/2020 19 Acceptable 80.744 0.14 2.64 6.4 87.3
06/18/2020 9 Acceptable 77.702 0.14 4.51 6.4 106.6
05/28/2020 6 Acceptable 69.998 0.11 11.8 8.4 130.1
10/10/2019 2 Acceptable 62.78 0.13 3.21 3.9 95.2
09/12/2019 6 Acceptable 71.78 0.14 2.74 5.2 95.6
08/08/2019 19 Acceptable 80.69 0.14 4.17 7.2 97
07/11/2019 5 Acceptable 80.438 0.09 10.49 13.7 105.7
06/07/2019 2 Acceptable 68.27 0.09 7.76 11.5 100.7
05/10/2019 2 Acceptable 55.742 0.08 2.5 11 100.1
10/12/2018 197 Beach Advisory 63.176 0.12 9.3 14.2 95.7
09/12/2018 23 Acceptable 73 0.13 3.41 7.2 81.7
08/16/2018 18 Acceptable 80.114 0.14 10.13 10.6 104.1
07/19/2018 8 Acceptable 81.428 0.15 3.03 6.3 86.7
06/15/2018 10 Acceptable 70.88 0.13 3.83 16.7 93.3
05/08/2018 11 Acceptable 58.604 0.08 2.45 15.8 101.7
10/18/2017 2 Acceptable 64.508 0.12 3.08 8.3 92.8
09/13/2017 3 Acceptable 70.088 0.12 3.36 7 102.5
08/16/2017 1 Acceptable 77.162 0.11 7.74 17.9 103.5
07/12/2017 11 Acceptable 76.136 0.08 1.9 25 86.6
06/14/2017 2 Acceptable 71.024 0.09 2.87 12.1 101
05/17/2017 1 Acceptable 58.568 0.08 1.91 12.8 104.6
10/17/2016 3 Acceptable 61.142 0.12 4.76 40.5 95.1
09/16/2016 2 Acceptable 75.434 0.12 3.44 n/a 90.1
08/17/2016 5 Acceptable 81.626 0.13 4.21 28.7 87.1
07/15/2016 3 Acceptable 79.448 0.12 3.52 15.5 86.6
06/17/2016 1 Acceptable 73.058 0.12 3.7 21.5 98
05/22/2016 1 Acceptable 62.474 0.1 17.92 30.9 123.5
10/14/2015 6 Acceptable 62.132 0.14 8.57 29.9 97.2
09/13/2015 10 Acceptable 77.72 0.14 1.96 15.6 76.6
08/14/2015 1 Acceptable 78.386 0.12 4.35 12 87.5
07/10/2015 5 Acceptable 73.166 0.09 4.64 24.8 100
06/13/2015 19 Acceptable 70.88 0.1 7.71 8.3 96.5
05/14/2015 4 Acceptable 65.894 0.1 9.72 29.5 n/a
10/15/2014 <1 Acceptable 63.734 0.13 1.45 18 96.5
09/10/2014 4 Acceptable 74.804 0.1 2.59 29.7 92.2
08/14/2014 10 Acceptable 75.686 0.12 0.73 24.2 84.8
07/10/2014 19 Acceptable 77.108 0.11 6.13 25.7 95
06/15/2014 1723 Beach Advisory 69.224 0.11 1.54 131.3 87.7
05/15/2014 11 Acceptable 61.052 0.09 2.5 47.7 98.5
10/20/2013 <1 Acceptable 62.078 0.15 6.03 35.4 106.5
09/21/2013 12 Acceptable 68.468 0.13 3.99 32.5 90.9
08/18/2013 10 Acceptable 74.804 0.12 5.11 75 92.1
07/21/2013 26 Acceptable 83.066 0.1 1.7 22.8 83.2
06/23/2013 13 Acceptable 69.962 0.1 0.95 35.7 97.9
06/03/2013 32 Acceptable 68.612 0.08 1.68 61.1 94.8
10/14/2012 4 Acceptable 58.01 0.12 4.36 77.3 96.4
09/14/2012 4 Acceptable 75.128 0.13 2.48 82.9 93.1
08/17/2012 5 Acceptable 79.34 0.17 1.17 20.5 81.2
07/20/2012 6 Acceptable 80.834 0.16 2.13 12.5 87.1
06/15/2012 3 Acceptable 71.852 0.12 1.7 80.6 95.1
05/19/2012 11 Acceptable 65.498 0.1 1.49 65 99.3
10/17/2011 1414 Beach Advisory 61.07 0.12 1.3 74.7 93.5
09/18/2011 16 Acceptable 66.416 0.11 0.96 38.8 90
08/20/2011 1 Acceptable 78.512 0.14 5.92 184.8 109.5
07/15/2011 4 Acceptable 78.566 0.09 7.21 13.6 n/a
07/01/2011 2 Acceptable 72.716 0.1 2.14 10.5 n/a
05/19/2011 411 Beach Advisory n/a n/a n/a n/a n/a
10/15/2010 31 Acceptable 56.912 0.1 2.11 21.2 92.7
09/14/2010 11 Acceptable 70.988 0.1 10.85 102.7 80.8
08/20/2010 16 Acceptable 78.44 0.13 3.83 10.5 75.9
07/19/2010 2 Acceptable 82.832 0.11 3.16 19.7 81.3
06/18/2010 7 Acceptable 71.42 0.14 7.88 17.7 98.9
05/24/2010 17 Acceptable 69.926 0.12 6.78 64.3 132
10/22/2009 9 Acceptable 52.862 0.1 3.98 72.1 101.5
09/17/2009 12 Acceptable 68.846 0.11 7.12 17.3 102.3
08/23/2009 23 Acceptable 79.178 0.11 3.16 14.4 93.2
07/31/2009 >2420 Beach Advisory 73.67 0.11 5.96 154.5 84.8
06/11/2009 12 Acceptable n/a n/a n/a n/a n/a
05/16/2009 3 Acceptable 63.1 0.09 3.71 16.9 104.1
05/15/2009 26 Acceptable 62.042 n/a 5.49 32.3 98.2
10/23/2008 2 Acceptable 53.924 0.13 15.25 15.2 100.3
09/16/2008 4 Acceptable n/a n/a n/a n/a n/a
08/08/2008 17 Acceptable n/a n/a n/a n/a n/a
07/17/2008 9 Acceptable 79.34 0.12 1.11 19.7 82.1
05/22/2008 1 Acceptable 57.965 0.1 17.19 37.25 104.1

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 Riverkeeper, Lamont-Doherty Earth Observatory and CUNY Queens College staff, 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:

Catskill, NY
This sampling site has recreational boating, kayaking, and fishing.

Agencies Responsible:

Greene County Dept. of Health: 518-719-3600, Columbia County Dept. of Health: 518-828-3358 and NYSDEC Region 4: 518-357-2045

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