Water Quality
Water Quality > Hudson River Estuary Data > Ulster County & Dutchess County Sites > Tivoli Landing

Tivoli Landing

Tivoli Landing
close

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

97 Samples taken

Sample Date [i] Enterococcus Count
close

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 27 Acceptable 0.0 0.0 0.0 0.0 0.1
09/20/2023 11 Acceptable 0.0 0.0 1.3 0.1 1.3
08/23/2023 14 Acceptable 0.0 0.0 0.0 0.0 0.0
07/19/2023 613 Beach Advisory 0.0 0.9 0.0 0.7 1.6
06/28/2023 1 Acceptable 0.0 0.2 1.2 0.4 1.8
05/03/2023 261 Beach Advisory 0.0 0.0 0.7 0.5 1.2
10/12/2022 24 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2022 14 Acceptable 0.0 0.0 0.0 0.0 0.0
08/21/2022 16 Acceptable 0.0 0.0 0.1 0.3 0.3
07/17/2022 10 Acceptable 0.0 0.0 0.0 0.0 0.0
06/15/2022 8 Acceptable 0.0 0.0 0.0 0.0 0.0
05/25/2022 3 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 11 Acceptable 0.0 0.0 0.8 0.0 0.8
08/18/2021 22 Acceptable 0.0 0.0 0.0 0.0 0.0
07/21/2021 88 Beach Advisory 0.5 0.3 0.1 0.9 1.9
06/09/2021 12 Acceptable 0.0 0.6 0.0 0.0 0.6
05/20/2021 3 Acceptable 0.0 0.0 0.0 0.0 0.0
10/16/2020 10 Acceptable 0.6 0.0 0.0 0.5 1.1
09/20/2020 11 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2020 11 Acceptable 0.0 0.0 0.0 0.0 0.0
07/16/2020 9 Acceptable 0.0 0.0 0.1 0.0 0.1
06/18/2020 7 Acceptable 0.0 0.0 0.0 0.0 0.0
05/28/2020 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/10/2019 1 Acceptable 0.0 0.0 0.1 1.1 1.1
09/12/2019 5 Acceptable 0.0 0.0 0.0 0.0 0.0
08/08/2019 6 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 1 Acceptable 0.0 0.6 0.5 0.0 1.2
05/10/2019 4 Acceptable 0.2 0.0 0.0 0.1 0.3
10/12/2018 116 Beach Advisory 0.0 1.3 0.0 0.0 1.3
09/12/2018 15 Acceptable 0.1 0.1 0.9 0.0 1.1
08/16/2018 37 Acceptable 0.0 0.0 0.0 0.1 0.1
07/19/2018 <1 Acceptable 0.0 0.0 0.4 0.0 0.4
06/15/2018 2 Acceptable 0.1 0.0 0.3 0.0 0.3
05/08/2018 1 Acceptable 0.0 0.0 0.3 0.0 0.3
10/18/2017 3 Acceptable 0.0 0.0 0.0 0.3 0.3
09/13/2017 2 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2017 4 Acceptable 0.0 0.0 0.0 0.0 0.0
07/12/2017 23 Acceptable 0.0 0.1 0.0 0.0 0.1
06/14/2017 3 Acceptable 0.0 0.0 0.0 0.0 0.0
05/17/2017 4 Acceptable 0.0 0.0 0.3 0.4 0.7
10/17/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2016 2 Acceptable 0.0 0.2 0.0 0.0 0.2
07/15/2016 <1 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 4 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2015 9 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 3 Acceptable 0.0 1.2 0.0 0.5 1.6
06/13/2015 3 Acceptable 0.0 1.3 0.0 0.0 1.3
05/14/2015 1 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 6 Acceptable 0.0 0.0 0.0 0.0 0.0
08/14/2014 16 Acceptable 0.0 0.0 0.0 0.0 0.0
07/10/2014 25 Acceptable 0.0 0.0 0.1 0.2 0.4
06/15/2014 49 Acceptable 0.0 0.0 0.1 0.0 0.1
05/15/2014 5 Acceptable 0.0 0.0 0.0 0.0 0.0
10/20/2013 1 Acceptable 0.0 0.1 0.0 0.0 0.1
09/21/2013 2 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2013 5 Acceptable 0.0 0.0 0.0 0.0 0.0
07/21/2013 10 Acceptable 0.0 0.0 0.0 0.1 0.1
06/23/2013 16 Acceptable 0.0 0.0 0.0 0.0 0.0
06/03/2013 25 Acceptable 1.3 0.0 0.0 0.0 1.3
10/14/2012 2 Acceptable 0.0 0.0 0.0 0.0 0.1
09/14/2012 3 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2012 11 Acceptable 0.0 0.0 0.3 0.1 0.4
07/20/2012 9 Acceptable 0.4 0.0 0.2 0.0 0.7
06/15/2012 1 Acceptable 0.0 0.0 0.2 0.3 0.6
05/19/2012 4 Acceptable 0.0 0.0 0.0 0.0 0.0
10/17/2011 344 Beach Advisory 0.0 0.1 0.0 0.0 0.1
09/18/2011 32 Acceptable 0.0 0.0 0.0 0.1 0.1
08/20/2011 <1 Acceptable 0.0 1.0 0.1 0.0 1.0
07/15/2011 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
07/01/2011 4 Acceptable 0.0 0.0 0.5 0.0 0.5
05/19/2011 161 Beach Advisory 0.0 0.9 0.8 0.1 1.8
10/15/2010 17 Acceptable 0.4 0.8 0.0 0.3 1.5
09/14/2010 31 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2010 24 Acceptable 0.1 2.9 0.0 0.0 3.0
08/20/2010 6 Acceptable 0.0 0.0 0.0 0.0 0.0
07/19/2010 1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2010 5 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2010 3 Acceptable 0.0 0.0 0.0 0.0 0.0
10/22/2009 7 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2009 18 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2009 248 Beach Advisory 0.0 0.3 0.3 0.0 0.6
07/31/2009 >2420 Beach Advisory 0.0 0.0 0.3 0.0 0.3
06/11/2009 1 Acceptable 0.2 0.0 0.9 0.0 1.1
05/14/2009 3 Acceptable 0.1 0.0 0.0 0.0 0.1
10/22/2008 2 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2008 4 Acceptable 0.0 0.0 0.2 0.1 0.3
08/08/2008 <1 Acceptable 0.4 0.1 0.3 0.0 0.8
07/16/2008 1 Acceptable 0.0 0.0 0.6 0.0 0.6
06/18/2008 3 Acceptable 0.0 0.0 0.2 0.0 0.2
05/21/2008 3 Acceptable 0.1 0.0 0.0 0.1 0.2

Entero Count (fecal indicator) and Rainfall Correlation

97 Samples taken

All Water Quality Parameters

97 Samples taken

Sample Date [i] Entero Count
close

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)
close

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
close

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
close

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
close

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
close

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 27 Acceptable 15.06 0.1 1.85 15.7 103.9
09/20/2023 11 Acceptable 21.94 0.12 2.54 n/a n/a
08/23/2023 14 Acceptable 23.45 0.1 3.02 2.8 89.8
07/19/2023 613 Beach Advisory 25.22 0.1 4.72 35.9 85.6
06/28/2023 1 Acceptable 76.2 0.1 2.7 7.5 91.6
05/03/2023 261 Beach Advisory 53.6 0.1 2.5 33.3 97.4
10/12/2022 24 Acceptable 60.1 0.1 3.7 15.9 89.3
09/12/2022 14 Acceptable 75.7 0.1 4.2 12.9 73.5
08/21/2022 16 Acceptable 80.1 0.1 3.1 2.8 91.5
07/17/2022 10 Acceptable 79.4 0.1 5.7 9.9 97.1
06/15/2022 8 Acceptable 74.8 0.1 3 18.8 88.1
05/25/2022 3 Acceptable 68.5 0.1 5.6 9.6 163.9
10/27/2021 >2420 Beach Advisory 56.498 0.11 2.66 82.7 94
09/15/2021 11 Acceptable 71.042 0.1 3.08 12.4 85.9
08/18/2021 22 Acceptable 77.918 0.1 7.01 12.7 95.9
07/21/2021 88 Beach Advisory 73.634 0.1 5.82 28.7 87.8
06/09/2021 12 Acceptable 72.644 0.14 3.08 14.2 97.4
05/20/2021 3 Acceptable 64.688 0.12 10.85 10.3 136.1
10/16/2020 10 Acceptable 61.214 0.14 6.91 6.6 95
09/20/2020 11 Acceptable 66.956 0.15 5.12 15.9 97.6
08/16/2020 11 Acceptable 80.726 0.14 6.49 4.1 96
07/16/2020 9 Acceptable 80.798 0.16 3.6 6.5 94
06/18/2020 7 Acceptable 76.586 0.13 3.16 6.4 102
05/28/2020 2 Acceptable 69.224 0.11 6.99 9.4 128.5
10/10/2019 1 Acceptable 62.6 0.13 2.08 3.9 87.5
09/12/2019 5 Acceptable 71.708 0.14 2.86 8.6 92.2
08/08/2019 6 Acceptable 80.222 0.14 5.01 9.7 98
07/11/2019 5 Acceptable 80.87 0.09 7.38 8.7 117.8
06/07/2019 1 Acceptable 68.864 0.09 8.69 9.4 107.4
05/10/2019 4 Acceptable 55.112 0.08 2.96 15.5 99.6
10/12/2018 116 Beach Advisory 63.32 0.12 5.08 19 96.3
09/12/2018 15 Acceptable 72.968 0.12 3.67 4.5 83.2
08/16/2018 37 Acceptable 77.954 0.12 3.81 29.3 79.9
07/19/2018 <1 Acceptable 81.77 0.15 3.81 9.1 96.2
06/15/2018 2 Acceptable 70.232 0.12 3.49 8.8 95.3
05/08/2018 1 Acceptable 57.884 0.08 2.22 11 102.1
10/18/2017 3 Acceptable 64.58 0.12 3 14.8 91.9
09/13/2017 2 Acceptable 69.89 0.13 3.36 9.3 88.7
08/16/2017 4 Acceptable 76.892 0.11 5.62 11.3 106.2
07/12/2017 23 Acceptable 75.848 0.09 1.63 63 80.7
06/14/2017 3 Acceptable 68.846 0.09 4.69 35 100.3
05/17/2017 4 Acceptable 58.532 0.07 1.9 18 101.6
10/17/2016 1 Acceptable 61.124 0.12 4.23 35.5 97.8
09/16/2016 1 Acceptable 75.272 0.12 3.21 n/a 91.7
08/17/2016 2 Acceptable 81.572 0.13 2.43 26.2 85.9
07/15/2016 <1 Acceptable 80.186 0.12 4.88 8.9 98.4
06/17/2016 1 Acceptable 72.86 0.12 4.39 21.9 100.9
05/22/2016 <1 Acceptable 61.754 0.1 5.36 25.3 123.6
10/14/2015 4 Acceptable 61.052 0.14 7.12 37.7 93.2
09/13/2015 9 Acceptable 77.234 0.14 3.01 22.1 82.1
08/14/2015 <1 Acceptable 78.026 0.12 5.52 6.5 94
07/10/2015 3 Acceptable 73.256 0.1 4.19 13.3 102.4
06/13/2015 3 Acceptable 71.402 0.11 2.68 1.4 101.6
05/14/2015 1 Acceptable 65.39 0.1 7.94 18 n/a
10/15/2014 <1 Acceptable 63.59 0.13 1.81 39.1 93.6
09/10/2014 6 Acceptable 74.66 0.12 1.35 16.5 87
08/14/2014 16 Acceptable 76.1 0.12 2.09 26.5 83
07/10/2014 25 Acceptable 76.64 0.1 7.11 35.2 96.5
06/15/2014 49 Acceptable 69.656 0.1 4.12 72.9 88.8
05/15/2014 5 Acceptable 60.458 0.08 2.47 32.9 100.7
10/20/2013 1 Acceptable 62.33 0.15 4.79 16.4 100.2
09/21/2013 2 Acceptable 68.072 0.13 3.42 32.6 87.1
08/18/2013 5 Acceptable 75.614 0.12 5 52.1 95.2
07/21/2013 10 Acceptable 82.562 0.1 2.05 22.5 82.9
06/23/2013 16 Acceptable 70.268 0.09 1.2 54 97.9
06/03/2013 25 Acceptable 68 0.06 3.92 43 94
10/14/2012 2 Acceptable 59.054 0.12 3.15 36.2 94.3
09/14/2012 3 Acceptable 74.804 0.13 2.37 66.2 91.3
08/17/2012 11 Acceptable 79.952 0.18 0.99 12.3 86.4
07/20/2012 9 Acceptable 80.438 0.16 2.23 18.8 89.1
06/15/2012 1 Acceptable 73.22 0.13 2.16 21.3 103.3
05/19/2012 4 Acceptable 64.67 0.1 1.99 38.8 96.4
10/17/2011 344 Beach Advisory 60.602 0.11 0.62 83 94.5
09/18/2011 32 Acceptable 66.038 0.11 0.85 63.1 88.3
08/20/2011 <1 Acceptable 77.774 0.13 2.22 81.9 83.9
07/15/2011 <1 Acceptable 79.016 0.09 7.2 9.3 n/a
07/01/2011 4 Acceptable 72.788 0.1 2.94 8.4 n/a
05/19/2011 161 Beach Advisory n/a n/a n/a n/a n/a
10/15/2010 17 Acceptable 56.894 0.1 2.67 24.5 90.3
09/14/2010 31 Acceptable 70.754 0.11 6.53 26 82.5
08/23/2010 24 Acceptable n/a n/a n/a n/a n/a
08/20/2010 6 Acceptable 78.584 0.13 4.36 226.3 90.2
07/19/2010 1 Acceptable 82.31 0.11 4.27 5 84
06/18/2010 5 Acceptable 72.464 0.13 10.33 6.3 99.7
05/24/2010 3 Acceptable 67.01 0.12 2.16 66.6 116.8
10/22/2009 7 Acceptable 53.096 0.11 4.36 75.7 100
09/17/2009 18 Acceptable 68.954 0.11 3.76 16.4 91.3
08/23/2009 248 Beach Advisory 79.574 0.11 3.11 16.1 87.5
07/31/2009 >2420 Beach Advisory 74.75 0.11 8.29 102.9 97.4
06/11/2009 1 Acceptable n/a n/a n/a n/a n/a
05/14/2009 3 Acceptable 61.394 0.08 6.75 8.9 106.1
10/22/2008 2 Acceptable 55.472 0.13 9.63 9.5 103.1
09/16/2008 4 Acceptable n/a n/a n/a n/a n/a
08/08/2008 <1 Acceptable n/a n/a n/a n/a n/a
07/16/2008 1 Acceptable 80.258 0.13 1.44 19.9 101.9
06/18/2008 3 Acceptable n/a n/a n/a n/a n/a
05/21/2008 3 Acceptable 58.73 0.09 3.285 7.75 98.75

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:

Tivoli, NY
There is an unofficial kayak launch from the rocky shore, as well as boating and fishing.

Agencies Responsible:

Dutchess County Dept. of Health: 845-486-3400, Ulster County Dept. of Health: 845-340-3010 and NYSDEC Region 3: 845-256-3000

Tell Gov. Hochul to block invasive species at the Erie and Champlain canals
Become a Member

Stay in Touch and Up To Date