Water Quality
Water Quality > Water Quality Testing Locations > Rockland County & Westchester County > Yonkers midchannel

Yonkers midchannel

Yonkers midchannel copy

About this location:

Yonkers, NY
This deep water site has boating and fishing.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000, Rockland County Dept. of Health: 845-364-2900 and NYSDEC Region 3: 914-428-2505

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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

45 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
10/10/2012 <10 Acceptable 0.3 0.3 0.3 0.5 0.5
09/10/2012 <10 Acceptable 0.0 0.0 0.4 0.4 0.5
08/13/2012 109 Unacceptable 0.0 0.0 0.0 0.2 0.2
07/16/2012 <10 Acceptable 0.0 0.3 0.3 0.3 0.3
06/12/2012 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
05/16/2012 <10 Acceptable 0.1 0.6 0.6 0.6 0.6
10/21/2011 <10 Acceptable 0.0 0.0 1.1 1.1 1.1
09/15/2011 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2011 10 Acceptable 0.0 0.0 0.6 6.4 6.4
07/18/2011 <10 Acceptable 0.0 0.0 0.0 0.0 0.1
06/28/2011 <10 Acceptable 0.0 0.0 0.0 0.0 0.3
05/17/2011 20 Acceptable 0.7 0.8 1.7 1.7 1.7
10/13/2010 10 Acceptable 0.0 0.1 1.2 1.2 1.2
09/12/2010 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2010 <10 Acceptable 0.0 0.0 0.1 0.3 0.3
07/22/2010 <10 Acceptable 0.0 0.0 0.0 0.1 0.1
06/16/2010 20 Acceptable 0.0 0.0 0.0 0.3 0.3
05/22/2010 <10 Acceptable 0.0 0.0 0.0 0.0 1.1
10/19/2009 20 Acceptable 0.0 0.3 0.3 0.4 1.0
09/15/2009 <10 Acceptable 0.0 0.0 0.0 0.0 0.9
08/21/2009 <10 Acceptable 0.0 0.0 0.0 0.6 0.6
07/29/2009 <10 Acceptable 0.0 0.0 0.6 2.0 2.0
06/23/2009 <10 Acceptable 0.0 0.0 0.5 0.7 3.0
06/06/2009 <10 Acceptable 0.0 0.9 1.5 2.0 2.0
05/13/2009 10 Acceptable 0.0 0.0 0.0 0.0 0.6
10/21/2008 41 Possible Risk 0.0 0.0 0.0 0.0 0.0
10/20/2008 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/19/2008 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/23/2008 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/19/2008 <10 Acceptable 0.0 0.0 0.0 0.0 1.1
07/14/2008 <10 Acceptable 0.5 0.5 0.5 0.5 0.5
07/02/2008 20 Acceptable 0.0 0.0 0.0 0.6 1.1
06/24/2008 410 Unacceptable 0.0 0.1 0.1 0.1 0.3
05/19/2008 <10 Acceptable 0.0 0.1 0.2 1.1 1.1
09/06/2007 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2007 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/11/2007 59 Possible Risk 0.0 0.0 0.0 0.0 0.0
06/28/2007 2 Acceptable 0.0 0.7 0.7 0.7 0.7
06/18/2007 4 Acceptable 0.0 0.0 0.0 0.0 0.0
05/23/2007 3 Acceptable 0.0 0.0 0.0 0.0 0.2
04/18/2007 <10 Acceptable 0.0 0.0 0.9 8.5 8.5
12/13/2006 112 Unacceptable 0.2 0.2 0.2 0.2 0.2
11/10/2006 6 Acceptable 0.0 0.0 3.6 3.6 3.6
10/18/2006 73 Possible Risk 0.0 1.1 1.1 1.1 1.1
09/26/2006 1 Acceptable 0.0 0.0 0.0 0.1 0.1

Basic Sampling Data

45 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
10/10/2012 <10 Acceptable 64.9 7.3 7.1 4.0 87.8
09/10/2012 <10 Acceptable 76.7 9.4 8.6 9 92
08/13/2012 109 Unacceptable 81.1 11.9 13.5 10 102
07/16/2012 <10 Acceptable 80.3 12.7 16.4 8 113
06/12/2012 <10 Acceptable 71.3 5.6 6.8 17 89
05/16/2012 <10 Acceptable 62.0 2.8 5.0 21 98
10/21/2011 <10 Acceptable 62.2 1.7 1.4 48 91
09/15/2011 <10 Acceptable 71.3 0.1 2.0 97 85
08/17/2011 10 Acceptable 79.2 8.4 2.3 30 80
07/18/2011 <10 Acceptable 80.2 5.6 2.7 16 n/a
06/28/2011 <10 Acceptable 76.9 3.2 10.5 7 95
05/17/2011 20 Acceptable 58.7 6.3 2.5 48 88
10/13/2010 10 Acceptable 64.5 0.8 4.3 17 89
09/12/2010 10 Acceptable 72.7 10.8 4.1 12 75
08/18/2010 <10 Acceptable 78.5 10.9 47.6 10 94
07/22/2010 <10 Acceptable 81.2 11.6 30.3 13 123
06/16/2010 20 Acceptable 71.4 9.9 3.8 27 74
05/22/2010 <10 Acceptable 63.5 8.5 5.0 14 92
10/19/2009 20 Acceptable 55.9 10.7 1.7 19 88
09/15/2009 <10 Acceptable 72.1 10.8 2.9 37 85
08/21/2009 <10 Acceptable 80.2 8.1 5.4 18 82
07/29/2009 <10 Acceptable 78.0 4.4 7.6 18 87
06/23/2009 <10 Acceptable 70.3 1.2 0.9 37 89
06/06/2009 <10 Acceptable n/a n/a n/a n/a n/a
05/13/2009 10 Acceptable 60.4 2.8 2.0 22 95
10/21/2008 41 Possible Risk 59.6 10.5 2.7 9 91
10/20/2008 <10 Acceptable 61.9 17.4 1.9 11 84
10/19/2008 <10 Acceptable 62.0 15.9 1.5 12 83
09/23/2008 10 Acceptable 70.2 9.4 2.2 10 84
08/19/2008 <10 Acceptable 77.9 9.0 3.0 27 86
07/14/2008 <10 Acceptable 77.6 9.5 6.1 11 94
07/02/2008 20 Acceptable 76.0 10.9 5.5 14 87
06/24/2008 410 Unacceptable 73.9 8.7 2.8 14 87
05/19/2008 <10 Acceptable 59.4 5.1 1.2 28 94
09/06/2007 <10 Acceptable 75.2 12.9 4.5 12 86
08/16/2007 <10 Acceptable 79.0 11.0 4.2 21 86
07/11/2007 59 Possible Risk 76.7 12.3 5.8 16 94
06/28/2007 2 Acceptable n/a n/a n/a n/a n/a
06/18/2007 4 Acceptable n/a n/a n/a n/a n/a
05/23/2007 3 Acceptable 62.2 3.3 1.3 81 91
04/18/2007 <10 Acceptable 42.7 0.3 0.6 77 100
12/13/2006 112 Unacceptable n/a n/a n/a n/a n/a
11/10/2006 6 Acceptable 52.5 0.2 2.1 52 96
10/18/2006 73 Possible Risk 62.3 7.9 4.0 8 92
09/26/2006 1 Acceptable 69.6 7.8 1.4 n/a 94

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

Acceptable Color
Enterococcus count (under 35/100ml) is acceptable by EPA standards*
Possible Risk Color
Enterococcus count (between 35 and 104/100ml), if sustained over time, would be unacceptable by EPA standards*
Unacceptable Color
Enterococcus count (over 104/100ml) 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