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 unsafe level for domoic acid in razor clams at 20 parts per million and above.

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.

Show last 12 mos. Show historical data

All domoic acid readings in ascending order of sample date
Sample Date	Level (ppm)
4/13/2024	7
3/30/2024	2
3/18/2024	4
2/24/2024	2
2/12/2024	5
1/28/2024	3
1/15/2024	9
12/29/2023	5
12/17/2023	4
11/30/2023	6
11/17/2023	10
11/3/2023	6
10/23/2023	10
10/8/2023	9
10/8/2023	9
10/8/2023	14
9/24/2023	13
9/24/2023	17
9/24/2023	19
9/14/2023	16
9/14/2023	17
9/14/2023	19
9/7/2023	15
9/6/2023	14
9/6/2023	16
9/3/2023	13
9/3/2023	15
9/3/2023	18
8/28/2023	8
8/28/2023	10
8/28/2023	13
8/19/2023	10
8/19/2023	13
8/19/2023	17
8/14/2023	11
8/3/2023	20
7/21/2023	5
7/4/2023	7
6/22/2023	7
6/1/2023	6
5/23/2023	5
5/14/2023	4
4/26/2023	4
4/12/2023	9
3/31/2023	6
3/12/2023	12
2/24/2023	15
2/15/2023	10
1/30/2023	19
1/19/2023	12
1/19/2023	15
1/19/2023	18
1/4/2023	18
1/4/2023	19
1/4/2023	19
12/19/2022	21
12/19/2022	22
12/19/2022	27
12/4/2022	10
12/4/2022	19
12/4/2022	23
11/21/2022	19
11/21/2022	21
11/21/2022	23
11/14/2022	21
11/14/2022	26
11/14/2022	31
11/6/2022	18
11/6/2022	19
11/6/2022	22
11/1/2022	8
11/1/2022	11
11/1/2022	14
10/27/2022	10
10/18/2022	7
10/18/2022	8
10/18/2022	10
10/4/2022	8
10/4/2022	8
10/4/2022	9
9/25/2022	10
9/25/2022	11
9/25/2022	18
9/14/2022	11
9/14/2022	11
9/14/2022	16
9/5/2022	7
9/5/2022	11
9/5/2022	15
8/30/2022	14
8/22/2022	6
8/22/2022	10
8/22/2022	13
8/14/2022	6
8/8/2022	9
8/1/2022	7
7/18/2022	1
6/29/2022	1
6/20/2022	1
6/1/2022	2
5/18/2022	0.5
5/4/2022	1
4/20/2022	1
4/6/2022	3
3/21/2022	2
3/3/2022	3
2/16/2022	4
2/1/2022	5
1/19/2022	2
1/4/2022	3
12/19/2021	2
12/5/2021	2
11/21/2021	4
11/6/2021	3
10/23/2021	3
10/10/2021	5
9/25/2021	7
9/21/2021	6
9/9/2021	4
8/26/2021	7
8/18/2021	10
8/5/2021	8
7/27/2021	9
7/14/2021	18
6/29/2021	5
6/17/2021	14
6/2/2021	9
6/2/2021	12
6/2/2021	14
5/25/2021	8
5/25/2021	12
5/25/2021	12
5/19/2021	14
5/19/2021	15
5/19/2021	23
5/10/2021	16
5/10/2021	17
5/10/2021	20
5/3/2021	14
5/3/2021	16
5/3/2021	27
4/26/2021	15
4/26/2021	21
4/26/2021	21
4/20/2021	20
4/20/2021	20
4/20/2021	25
4/13/2021	20
4/13/2021	26
4/13/2021	30
4/6/2021	11
4/6/2021	14
4/6/2021	15
4/1/2021	15
4/1/2021	18
4/1/2021	35
3/24/2021	20
3/24/2021	24
3/24/2021	26
3/10/2021	22
2/23/2021	26
2/8/2021	23
2/8/2021	28
2/8/2021	50
1/28/2021	27
1/28/2021	32
1/28/2021	49
1/11/2021	25
1/11/2021	27
1/11/2021	28
12/28/2020	23
12/12/2020	46
12/1/2020	25
11/16/2020	44
11/1/2020	23
10/28/2020	6
10/21/2020	5
10/8/2020	3
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
6/28/2020	0.5
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
3/25/2015	0.5
3/9/2015	1
2/22/2015	1
2/18/2015	0.5
2/4/2015	1
1/21/2015	1
1/7/2015	1
12/22/2014	1
12/8/2014	0.1
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
7/14/2014	0.5
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
4/29/2013	0.5
4/16/2013	0.1
4/1/2013	0.5
3/17/2013	0.5
2/27/2013	1
2/6/2013	1
1/29/2013	1
1/12/2013	1
1/9/2013	0.1
12/30/2012	0.5
12/14/2012	0.5
12/2/2012	0.5
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
8/14/2012	0.1
7/31/2012	0.1
6/18/2012	0.5
6/7/2012	0.5
5/8/2012	0.5
4/24/2012	0.1
3/14/2012	0.1
3/4/2012	0.1
2/9/2012	0.1
1/11/2012	0.1
12/12/2011	0.5
11/2/2011	0.5
10/20/2011	0.1
10/10/2011	0.1
9/21/2011	0.1
8/15/2011	0.1
6/22/2011	0.1
6/2/2011	0.1
5/19/2011	0.1
5/9/2011	0.1
4/26/2011	0.1
4/18/2011	0.5
3/9/2011	0.5
3/1/2011	0.5
2/4/2011	0.5
1/31/2011	0.5
1/23/2011	0.5
1/19/2011	0.5
12/21/2010	1
11/22/2010	0.5
11/18/2010	1
10/19/2010	0.1
10/5/2010	0.1
9/30/2010	0.1
9/21/2010	0.5
9/3/2010	0.5
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
7/21/2009	0.5
7/8/2009	1
6/22/2009	0.5
6/4/2009	0.5
5/27/2009	1
5/12/2009	1
4/30/2009	0.5
4/23/2009	1
4/19/2009	0.1
4/14/2009	0.1
3/22/2009	0.5
3/17/2009	0.5
3/9/2009	0.5
2/23/2009	0.5
1/28/2009	1
1/21/2009	0.5
12/29/2008	0.1
12/8/2008	0.5
12/3/2008	0.5
11/23/2008	0.5
11/18/2008	0.5
11/11/2008	0.5
10/29/2008	0.5
10/19/2008	0.1
10/15/2008	0.1
9/9/2008	0.1
9/1/2008	0.5
8/4/2008	0.5
7/8/2008	0.5
6/2/2008	0.5
5/27/2008	0.5
5/19/2008	0.1
5/12/2008	0.1
4/27/2008	0.5
4/10/2008	0.5
4/1/2008	0.5
3/10/2008	0.5
3/4/2008	0.5
2/3/2008	0.5
1/20/2008	1
1/11/2008	0.5
12/10/2007	1
11/14/2007	0.5
11/7/2007	0.5
10/24/2007	0.5
10/16/2007	0.5
10/8/2007	0.5
9/23/2007	0.5
9/5/2007	0.1
8/29/2007	0.5
8/27/2007	0.5
8/14/2007	0.1
7/26/2007	0.5
7/11/2007	0.5
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
12/26/2006	0.5
12/19/2006	1
12/5/2006	1
11/27/2006	1
11/20/2006	0.5
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
2/1/2006	0.1
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