Long Beach domoic acid levels

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Domoic acid, a naturally occurring toxin produced by certain types of algae, can be harmful or even fatal to humans if contaminated shellfish is consumed.  The Washington Department of Fish and Wildlife (WDFW) routinely provides razor clams from various ocean beaches to the Washington Department of Health to test for domoic acid. State public health officials have set the maximum threshold for domoic acid levels in razor clams at 20 parts per million.

See domoic acid levels at Twin Harbors, CopalisMocrocks, Kalaloch, and Willapa Spits.

On desktop/laptop, move the cursor over a data point to see the exact date and level. To zoom in or out on the chart, use the mouse scroll wheel. Click and drag the graph to pan the data left or right.

On touch devices, tap the data point to see the exact date and level. To zoom in or out on the chart, spread or pinch the chart area. Tap and drag the graph to pan the data left or right.
All domoic acid readings in ascending order of sample date
Sample Date Level (ppm)
9/21/2020 3
9/9/2020 5
9/1/2020 1
8/20/2020 1
5/14/2020 1
3/23/2020 4
3/10/2020 4
2/24/2020 5
2/11/2020 3
1/25/2020 4
1/13/2020 7
12/28/2019 6
12/16/2019 6
11/30/2019 6
11/21/2019 1
11/1/2019 7
10/24/2019 7
10/20/2019 8
10/15/2019 5
9/17/2019 2
8/26/2019 2
7/22/2019 1
6/3/2019 2
4/9/2019 2
3/20/2019 6
1/21/2019 7
12/10/2018 4
10/15/2018 1
9/26/2018 1
8/9/2018 1
7/10/2018 2
6/25/2018 3
6/11/2018 3
5/29/2018 4
4/23/2018 5
4/9/2018 4
4/3/2018 4
3/6/2018 4
1/20/2018 5
1/14/2018 9
12/21/2017 3
12/13/2017 13
11/20/2017 5
11/12/2017 7
10/24/2017 10
10/17/2017 10
10/2/2017 9
9/25/2017 11
9/18/2017 8
8/8/2017 15
7/12/2017 14
6/12/2017 11
5/15/2017 33
5/2/2017 41
4/23/2017 17
4/16/2017 14
4/9/2017 10
4/2/2017 18
3/26/2017 21
3/12/2017 9
3/7/2017 21
3/1/2017 25
2/23/2017 18
2/12/2017 39
2/6/2017 21
1/24/2017 34
1/11/2017 24
12/27/2016 35
12/12/2016 27
12/4/2016 35
11/29/2016 19
11/20/2016 24
11/2/2016 28
10/26/2016 26
10/12/2016 24
10/4/2016 24
9/26/2016 19
9/19/2016 29
9/6/2016 3
8/23/2016 3
8/8/2016 3
7/25/2016 4
7/11/2016 6
6/20/2016 2
6/5/2016 3
5/5/2016 5
4/26/2016 7
4/12/2016 3
3/30/2016 6
3/9/2016 9
2/24/2016 16
2/22/2016 3
2/10/2016 13
1/26/2016 5
1/13/2016 18
12/30/2015 19
12/15/2015 16
12/1/2015 25
11/19/2015 26
11/8/2015 24
10/27/2015 31
10/12/2015 20
9/29/2015 41
9/14/2015 19
9/2/2015 25
8/18/2015 42
8/5/2015 75
7/22/2015 50
7/8/2015 57
6/16/2015 52
6/4/2015 77
5/26/2015 110
5/18/2015 79
5/11/2015 57
5/7/2015 20
5/5/2015 12
4/30/2015 1
4/21/2015 1
2/22/2015 1
2/4/2015 1
1/21/2015 1
12/22/2014 1
12/7/2014 1
11/23/2014 1
10/27/2014 1
7/16/2014 1
6/26/2014 2
6/11/2014 1
5/19/2014 2
5/4/2014 3
4/21/2014 2
4/7/2014 2
4/1/2014 2
3/19/2014 1
3/12/2014 2
2/19/2014 3
2/1/2014 3
1/21/2014 2
1/8/2014 6
12/18/2013 3
12/5/2013 3
11/21/2013 3
11/5/2013 2
10/8/2013 2
9/28/2013 1
9/23/2013 1
9/23/2013 1
9/4/2013 2
8/19/2013 3
8/5/2013 2
7/9/2013 1
6/25/2013 1
4/1/2013 1
3/17/2013 1
2/27/2013 1
2/13/2013 1
1/29/2013 1
1/12/2013 1
12/29/2012 1
12/2/2012 1
11/17/2012 1
11/4/2012 1
10/29/2012 1
10/16/2012 1
9/27/2012 1
9/4/2012 1
1/6/2011 1
12/21/2010 1
11/21/2010 1
11/10/2010 1
11/3/2010 1
6/14/2010 1
6/1/2010 1
4/12/2010 1
3/18/2010 1
3/9/2010 1
2/9/2010 1
1/29/2010 1
1/19/2010 1
1/11/2010 1
12/20/2009 1
12/14/2009 1
11/21/2009 1
10/12/2009 1
10/4/2009 1
9/28/2009 1
9/21/2009 1
8/16/2009 2
8/11/2009 2
8/3/2009 3
7/23/2009 1
6/22/2009 1
5/26/2009 1
5/11/2009 1
4/30/2009 1
4/23/2009 1
4/19/2009 1
4/13/2009 1
3/22/2009 1
3/17/2009 1
3/10/2009 1
1/21/2009 1
12/3/2008 2
11/23/2008 2
10/28/2008 1
2/2/2008 1
1/20/2008 1
1/11/2008 1
12/12/2007 1
7/30/2007 1
6/18/2007 4
6/12/2007 4
5/21/2007 3
5/4/2007 3
4/26/2007 3
4/12/2007 3
4/4/2007 4
3/8/2007 3
2/28/2007 4
2/3/2007 4
1/28/2007 4
12/31/2006 1
12/18/2006 1
11/20/2006 2
10/30/2006 2
10/22/2006 1
10/2/2006 1
9/25/2006 3
9/11/2006 1
8/28/2006 2
8/14/2006 4
7/31/2006 2
7/24/2006 4
7/17/2006 4
7/10/2006 4
6/26/2006 3
6/12/2006 2
5/30/2006 2
5/15/2006 2
4/23/2006 3
4/14/2006 2
3/20/2006 2
3/13/2006 1
2/15/2006 2
2/8/2006 2
1/29/2006 2
1/17/2006 4
1/10/2006 2
12/31/2005 1
12/19/2005 2
12/12/2005 5
11/6/2005 5
10/30/2005 6
10/9/2005 9
10/2/2005 9
9/19/2005 4
9/6/2005 3
8/22/2005 2
8/8/2005 1
7/28/2005 2
7/11/2005 6
6/9/2005 7
5/27/2005 5
5/2/2005 14
4/27/2005 20
4/25/2005 20
4/22/2005 8
4/20/2005 15
4/14/2005 2
3/31/2005 1
3/6/2005 1
2/24/2005 1
2/12/2005 1
1/26/2005 2
1/12/2005 4
12/28/2004 2
12/21/2004 2
12/1/2004 3
11/23/2004 3
11/3/2004 2
10/27/2004 2
10/11/2004 2
10/3/2004 3
9/27/2004 1
9/13/2004 4
8/30/2004 5
8/9/2004 4
8/4/2004 5
7/20/2004 1
7/6/2004 1
6/21/2004 3
6/14/2004 1
5/17/2004 2
5/3/2004 2
4/14/2004 3
4/5/2004 2
3/22/2004 2
3/9/2004 5
2/15/2004 3
2/9/2004 4
2/3/2004 9
1/21/2004 4
1/11/2004 6
1/5/2004 4
12/13/2003 3
12/8/2003 7
11/23/2003 4
11/10/2003 3
10/20/2003 2
10/13/2003 4
10/6/2003 4
9/29/2003 3
9/22/2003 7
9/15/2003 7
9/8/2003 4
9/3/2003 13
8/25/2003 6
8/11/2003 3
7/15/2003 9
7/1/2003 18
6/16/2003 13
6/1/2003 19
5/20/2003 29
5/12/2003 39
5/4/2003 30
4/29/2003 29
4/21/2003 33
4/14/2003 21
4/7/2003 25
3/31/2003 21
3/24/2003 32
3/17/2003 32
2/27/2003 59
2/13/2003 38
1/28/2003 62
1/16/2003 71
12/30/2002 81
12/17/2002 53
12/2/2002 80
11/18/2002 52
11/4/2002 84
10/20/2002 132
10/6/2002 38
9/30/2002 16
7/15/2002 3
6/30/2002 2
5/24/2002 4
4/21/2002 4
3/24/2002 4
2/21/2002 4
1/24/2002 8
12/6/2001 7
11/7/2001 6
10/4/2001 9
9/10/2001 18
8/30/2001 13
7/25/2001 6
6/11/2001 9
5/16/2001 11
4/12/2001 17
3/11/2001 22
2/4/2001 4
1/24/2001 3
12/1/2000 2
11/16/2000 4
10/11/2000 3
9/25/2000 3
8/15/2000 2
7/5/2000 4
4/2/2000 6
3/22/2000 1
2/15/2000 2
1/17/2000 4
12/12/1999 6
11/13/1999 13
10/13/1999 12
9/23/1999 5
8/11/1999 4
7/19/1999 8
6/14/1999 13
5/18/1999 16
4/2/1999 24
3/1/1999 30
2/19/1999 27
1/3/1999 48