Water Quality
Water Quality > Water Quality Testing Locations > Albany County & Rensselaer County > Hudson River above Troy Lock

Hudson River above Troy Lock

About this location:

Troy, NY
The Hudson River, above the lock at Troy, is no longer part of the estuary. This site has boating, kayaking, recreational and subsistence fishing, and occasional swimming.

Agencies Responsible:

Rensselaer County Dept. of Health: 518-270-2655, Albany County Dept. of Health: 518-447-4580 and NYSDEC Region 4: 518-357-2045

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Basic Sampling Data

Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.

Water Quality, Enterococcus Count and Precipitation

31 Samples taken

Sample Date [i] Enterococcus
Count
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Enterococcus Count

Enterococcus is a commonly used indicator of water quality and sewage contamination.

Quality Rain, day
of (in)		 Prior Day 2 Days
Prior		 3 Days
Prior		 5 Days
Prior
10/15/2012 65 Unacceptable 0.4 1.0 1.0 1.5 1.7
09/15/2012 64 Unacceptable 0.1 0.1 0.1 0.1 0.1
08/18/2012 33 Possible Risk 0.0 0.1 0.1 0.3 0.3
07/21/2012 28 Acceptable 0.0 0.0 0.0 0.2 0.2
06/16/2012 49 Possible Risk 0.0 0.0 0.0 0.2 0.7
05/20/2012 96 Unacceptable 0.0 0.0 0.0 0.0 0.8
10/16/2011 1553 Unacceptable 0.0 0.1 1.3 1.6 1.6
09/19/2011 72 Unacceptable 0.0 0.0 0.0 0.1 0.4
08/21/2011 727 Unacceptable 0.4 0.4 0.4 0.4 0.6
07/14/2011 108 Unacceptable 0.0 0.3 0.3 0.3 0.3
07/02/2011 63 Unacceptable 0.0 0.0 1.0 2.1 2.2
05/19/2011 96 Unacceptable 0.8 1.0 1.1 1.7 2.5
10/16/2010 1986 Unacceptable 0.0 1.0 1.3 1.3 1.3
09/14/2010 32 Acceptable 0.0 0.0 0.0 0.0 0.1
08/23/2010 345 Unacceptable 0.1 0.4 0.4 0.5 0.6
08/21/2010 67 Unacceptable 0.0 0.1 0.2 0.2 0.2
07/19/2010 579 Unacceptable 0.0 0.2 0.7 0.7 0.8
06/18/2010 387 Unacceptable 0.0 0.0 0.3 0.3 0.5
05/25/2010 30 Acceptable 0.0 0.0 0.0 0.0 0.0
10/23/2009 22 Acceptable 0.0 0.0 0.0 0.0 0.0
09/17/2009 99 Unacceptable 0.0 0.0 0.0 0.0 0.0
08/24/2009 260 Unacceptable 0.0 0.3 1.3 2.8 3.0
07/31/2009 >2420 Unacceptable 0.6 0.9 1.9 1.9 2.4
06/13/2009 272 Unacceptable 0.0 0.3 0.6 0.6 1.1
05/15/2009 54 Possible Risk 0.0 0.5 0.5 0.5 0.5
10/23/2008 4 Acceptable 0.0 0.2 0.2 0.2 0.2
09/18/2008 11 Acceptable 0.0 0.0 0.0 0.0 0.3
08/09/2008 42 Possible Risk 0.0 0.0 1.3 1.5 2.8
07/17/2008 17 Acceptable 0.0 0.0 0.0 0.1 0.8
06/19/2008 45 Possible Risk 0.0 0.4 0.5 1.4 1.7
05/22/2008 34 Possible Risk 0.2 0.2 0.2 0.2 0.3

Basic Sampling Data

31 Samples taken

Sample Date [i] Enterococcus
Count
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Enterococcus Count

Enterococcus is a commonly used indicator of water quality and sewage contamination.

Quality Temperature
(f)		 Salinity Chlorophyll Turbidity Oxygen
10/15/2012 65 Unacceptable 56.8 0.1 2.0 12.1 99.8
09/15/2012 64 Unacceptable 72.4 0.1 1.2 5 103
08/18/2012 33 Possible Risk 80.0 0.1 2.1 4 116
07/21/2012 28 Acceptable 82.6 0.1 7.8 9 131
06/16/2012 49 Possible Risk 74.6 0.1 1.6 15 109
05/20/2012 96 Unacceptable 66.6 0.1 1.0 22 107
10/16/2011 1553 Unacceptable 59.9 0.1 1.9 78 102
09/19/2011 72 Unacceptable 64.6 0.1 0.9 13 105
08/21/2011 727 Unacceptable 77.7 0.1 2.7 20 100
07/14/2011 108 Unacceptable 76.9 0.1 5.7 4 n/a
07/02/2011 63 Unacceptable 73.4 0.1 0.7 8 n/a
05/19/2011 96 Unacceptable n/a n/a n/a n/a n/a
10/16/2010 1986 Unacceptable 54.0 0.1 2.2 48 102
09/14/2010 32 Acceptable 69.1 0.1 4.7 5 100
08/23/2010 345 Unacceptable n/a n/a n/a n/a n/a
08/21/2010 67 Unacceptable 77.3 0.1 3.0 n/a 98
07/19/2010 579 Unacceptable 81.4 0.1 6.5 3 89
06/18/2010 387 Unacceptable 71.5 0.1 4.6 7 105
05/25/2010 30 Acceptable 75.7 0.1 6.7 127 116
10/23/2009 22 Acceptable 50.3 0.1 0.4 22 99
09/17/2009 99 Unacceptable 67.8 0.1 2.1 5 95
08/24/2009 260 Unacceptable 77.6 0.1 1.9 54 105
07/31/2009 >2420 Unacceptable 72.7 0.1 2.1 139 103
06/13/2009 272 Unacceptable n/a n/a n/a n/a n/a
05/15/2009 54 Possible Risk 64.2 n/a 1.2 5 111
10/23/2008 4 Acceptable 52.2 0.1 1.5 2 97
09/18/2008 11 Acceptable n/a n/a n/a n/a n/a
08/09/2008 42 Possible Risk n/a n/a n/a n/a n/a
07/17/2008 17 Acceptable 80.0 0.1 2.1 15 107
06/19/2008 45 Possible Risk n/a n/a n/a n/a n/a
05/22/2008 34 Possible Risk 59.5 0.1 9.9 14 110

Rainfall data comes from wunderground.com. It is added daily to show cumulative amounts.

Acceptable Color
Enterococcus count (under 33/100ml) is acceptable by EPA standards*
Possible Risk Color
Enterococcus count (between 33 and 61/100ml), if sustained over time, would be unacceptable by EPA standards*
Unacceptable Color
Enterococcus count (over 61/100ml) is unacceptable by EPA standards*

What do the Numbers Mean?

We have based our assessment of acceptable water quality on the federal guidelines outlined in the 2000 Beaches Environmental Assessment and Coastal Health (BEACH) Act. Learn More