Copalis domoic acid levels

Visit the Copalis beach page for directions, harvest information, and more.

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 Long Beach, Twin Harbors, Mocrocks, 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 2
9/10/2020 4
9/2/2020 4
8/23/2020 1
8/17/2020 3
8/8/2020 4
7/26/2020 1
6/8/2020 1
5/27/2020 2
5/20/2020 2
5/14/2020 1
5/12/2020 2
4/29/2020 2
4/22/2020 1
4/12/2020 2
4/5/2020 2
3/29/2020 2
3/22/2020 2
3/11/2020 2
2/24/2020 2
2/11/2020 3
1/25/2020 5
1/13/2020 2
12/28/2019 4
12/16/2019 3
11/30/2019 4
11/21/2019 4
11/1/2019 3
10/15/2019 2
10/10/2019 2
9/30/2019 2
9/15/2019 2
8/19/2019 1
8/12/2019 1
8/2/2019 3
6/2/2019 3
5/15/2019 3
5/8/2019 3
4/30/2019 4
4/11/2019 4
4/2/2019 4
3/27/2019 4
3/16/2019 5
3/7/2019 5
2/19/2019 5
1/30/2019 6
1/21/2019 6
1/6/2019 6
12/22/2018 2
12/8/2018 2
11/25/2018 2
11/11/2018 1
10/29/2018 3
10/16/2018 2
10/3/2018 1
9/27/2018 1
9/10/2018 1
8/28/2018 2
7/26/2018 1
7/16/2018 1
7/8/2018 3
6/25/2018 2
6/12/2018 2
5/30/2018 4
5/21/2018 3
4/23/2018 5
4/10/2018 5
4/3/2018 5
3/21/2018 8
3/6/2018 5
2/26/2018 6
2/12/2018 5
1/20/2018 6
1/14/2018 7
12/21/2017 5
12/13/2017 9
12/7/2017 10
11/20/2017 8
11/12/2017 6
11/7/2017 10
10/30/2017 7
10/24/2017 7
10/16/2017 4
10/9/2017 6
10/2/2017 7
9/25/2017 5
9/18/2017 12
9/11/2017 5
9/5/2017 10
8/29/2017 13
8/16/2017 8
8/8/2017 9
7/25/2017 11
7/11/2017 11
6/27/2017 13
5/31/2017 26
5/15/2017 39
5/8/2017 27
5/2/2017 16
4/23/2017 7
4/16/2017 6
4/9/2017 4
4/2/2017 4
3/26/2017 5
3/16/2017 6
2/27/2017 6
2/13/2017 4
1/30/2017 7
1/24/2017 5
1/15/2017 6
1/9/2017 6
12/26/2016 7
12/12/2016 6
12/4/2016 8
11/27/2016 3
11/13/2016 7
11/1/2016 8
10/26/2016 6
10/4/2016 4
9/27/2016 4
9/18/2016 3
9/14/2016 6
9/1/2016 1
8/15/2016 3
8/4/2016 3
7/25/2016 3
6/22/2016 2
5/24/2016 5
5/11/2016 2
4/26/2016 3
4/12/2016 3
3/28/2016 11
3/20/2016 4
3/8/2016 9
2/11/2016 5
2/4/2016 10
1/26/2016 7
1/14/2016 11
1/7/2016 13
12/30/2015 18
12/15/2015 12
12/8/2015 14
11/23/2015 14
10/27/2015 30
10/7/2015 33
9/28/2015 18
9/9/2015 29
9/1/2015 22
8/26/2015 31
8/11/2015 22
7/29/2015 38
7/15/2015 68
6/30/2015 79
6/16/2015 68
6/1/2015 65
6/1/2015 65
5/27/2015 70
5/27/2015 70
5/18/2015 74
5/18/2015 74
5/11/2015 41
5/7/2015 14
5/4/2015 5
4/30/2015 3
4/22/2015 1
3/9/2015 1
2/22/2015 1
2/4/2015 1
1/21/2015 1
1/7/2015 1
12/22/2014 1
12/3/2014 2
11/23/2014 1
11/18/2014 1
10/27/2014 1
9/23/2014 1
9/2/2014 1
8/12/2014 2
7/27/2014 1
6/25/2014 1
6/10/2014 1
5/19/2014 2
5/13/2014 1
5/5/2014 2
4/29/2014 2
4/21/2014 1
4/15/2014 2
4/7/2014 1
4/1/2014 1
3/19/2014 2
3/12/2014 1
2/27/2014 2
2/20/2014 1
2/1/2014 2
1/28/2014 3
1/21/2014 2
1/9/2014 2
12/18/2013 4
12/5/2013 3
11/21/2013 3
11/4/2013 2
10/9/2013 1
10/7/2013 1
9/28/2013 1
9/23/2013 1
9/23/2013 1
9/16/2013 2
9/16/2013 2
9/4/2013 2
8/28/2013 2
8/19/2013 2
7/11/2013 1
5/1/2013 1
2/27/2013 1
2/6/2013 1
1/29/2013 1
1/12/2013 1
11/17/2012 1
11/14/2012 1
11/4/2012 1
10/29/2012 1
10/14/2012 1
10/9/2012 1
9/25/2012 1
9/10/2012 1
9/4/2012 1
8/28/2012 1
12/21/2010 1
11/18/2010 1
8/19/2010 1
8/8/2010 1
7/27/2010 1
7/11/2010 1
6/24/2010 1
6/13/2010 1
5/31/2010 1
5/24/2010 1
5/10/2010 1
5/2/2010 1
4/11/2010 1
3/18/2010 1
3/9/2010 1
2/16/2010 2
2/9/2010 3
2/4/2010 2
1/29/2010 3
1/12/2010 1
12/20/2009 2
12/14/2009 3
11/21/2009 2
10/12/2009 3
10/4/2009 4
9/28/2009 3
9/14/2009 4
8/31/2009 3
8/24/2009 4
8/17/2009 2
8/4/2009 4
7/8/2009 1
5/27/2009 1
5/12/2009 1
4/23/2009 1
1/28/2009 1
1/20/2008 1
12/10/2007 1
6/19/2007 3
6/5/2007 3
5/23/2007 4
5/8/2007 4
5/1/2007 4
4/11/2007 3
4/4/2007 3
3/13/2007 4
3/7/2007 3
2/27/2007 4
2/13/2007 4
2/5/2007 3
12/19/2006 1
12/5/2006 1
11/27/2006 1
11/8/2006 1
10/30/2006 1
10/24/2006 1
10/10/2006 1
10/4/2006 2
10/2/2006 1
9/25/2006 2
9/19/2006 2
9/11/2006 2
8/30/2006 4
8/21/2006 2
8/9/2006 3
7/24/2006 3
7/11/2006 3
6/26/2006 2
6/13/2006 3
5/31/2006 3
5/18/2006 3
5/14/2006 3
4/23/2006 2
4/14/2006 2
3/20/2006 2
3/13/2006 2
2/15/2006 2
2/8/2006 1
1/17/2006 1
1/10/2006 1
12/19/2005 3
12/12/2005 4
11/6/2005 5
10/30/2005 4
10/9/2005 7
10/2/2005 5
9/29/2005 4
9/7/2005 1
8/29/2005 1
8/23/2005 2
8/16/2005 5
7/20/2005 2
6/27/2005 2
6/22/2005 3
5/30/2005 4
5/23/2005 6
5/15/2005 5
5/8/2005 6
5/1/2005 8
4/27/2005 5
4/24/2005 4
4/19/2005 3
4/14/2005 2
3/31/2005 1
3/21/2005 1
3/9/2005 2
2/24/2005 1
2/12/2005 2
1/26/2005 2
1/13/2005 3
12/28/2004 4
12/22/2004 3
12/1/2004 3
11/22/2004 4
11/3/2004 3
10/25/2004 3
10/11/2004 3
10/3/2004 7
9/26/2004 3
9/13/2004 3
8/31/2004 7
8/18/2004 7
8/9/2004 5
8/3/2004 3
7/19/2004 1
6/21/2004 3
5/26/2004 4
5/12/2004 10
5/6/2004 6
4/25/2004 9
4/14/2004 3
4/6/2004 5
4/1/2004 7
3/23/2004 7
3/10/2004 15
3/8/2004 17
2/15/2004 6
2/3/2004 6
1/21/2004 6
1/11/2004 7
12/27/2003 10
12/22/2003 8
12/13/2003 4
12/8/2003 9
11/30/2003 4
11/11/2003 11
10/6/2003 12
9/29/2003 16
9/22/2003 18
9/15/2003 13
9/8/2003 17
9/1/2003 32
8/25/2003 15
8/11/2003 17
7/15/2003 36
7/1/2003 26
6/4/2003 34
6/1/2003 39
5/18/2003 51
5/5/2003 54
4/20/2003 66
4/7/2003 81
3/23/2003 87
3/11/2003 44
2/27/2003 83
2/13/2003 78
1/28/2003 99
1/16/2003 87
12/29/2002 102
12/18/2002 107
12/2/2002 78
11/17/2002 72
11/4/2002 61
10/20/2002 185
10/6/2002 53
9/30/2002 27
8/27/2002 1
5/6/2002 1
4/20/2002 1
3/24/2002 1
2/21/2002 1
1/24/2002 2
12/6/2001 2
11/7/2001 2
10/10/2001 3
9/5/2001 44
8/23/2001 4
7/27/2001 4
6/5/2001 7
5/12/2001 8
4/12/2001 10
3/4/2001 12
2/6/2001 2
1/8/2001 6
12/11/2000 5
11/16/2000 4
10/20/2000 3
9/25/2000 6
8/16/2000 2
5/7/2000 6
4/11/2000 3
3/18/2000 2
1/7/2000 12
12/12/1999 2
11/13/1999 10
10/6/1999 15
9/22/1999 11
8/11/1999 8
7/19/1999 11
6/14/1999 15
5/26/1999 34
4/2/1999 31
3/1/1999 45
2/1/1999 29
1/4/1999 42