DOH Marine Biotoxin Bulletin
Beach closure listing due to red tide and other marine toxins
WDFW Olympic Region Harmful Algal Bloom (ORHAB) project
 

Twin Harbors Domoic Acid Levels

Long Beach | Twin Harbors | Copalis | Mocrocks | Kalaloch | Willapa Spits

1996-1999
Sample Date Level (ppm)
6/09/96 3.0
12/11/96 2.0
4/05/97 1.0
10/1/97 0.0
1/15/98 0.0
6/12/98 0.0
7/29/98 9.0
8/11/98 8.0
9/04/98 12.0
9/21/98 47.0
10/05/98 107.0
10/19/98 108.0
11/02/98 81.0
11/18/98 100.0
12/03/98 48.0
12/17/98 51.0
1/04/99 48.0
1/18/99 27.0
2/01/99 48.0
2/18/99 52.0
3/01/99 48.0
3/15/99 40.0
4/02/99 36.0
5/17/99 22.0
6/15/99 10.0
7/19/99 9.0
8/11/99 21.0
9/23/99 13.0
10/06/99 11.0
10/13/99 6.0
10/24/99 22.0
10/31/99 7.0
11/07/99 15.0
11/10/99 15.0
11/13/99 16.0
11/21/99 10.0
12/05/99 6.0
12/12/99 5.0
12/19/99 7.0
2000-2001
Sample Date Level (ppm)
1/17/2000 6.0
2/15/2000 19.0
3/22/2000 4.0
4/03/2000 3.0
4/12/2000 5.0
6/08/2000 10.0
7/16/2000 5.0
8/16/2000 2.0
9/12/2000 2.0
9/25/2000 5.0
10/11/2000 4.0
10/14/2000 3.0
10/20/2000 4.0
11/01/2000 3.0
11/16/2000 5.0
11/30/2000 4.0
1/24/2001 3.0
2/04/2001 3.0
3/11/2001 24.0
4/12/2001 18.0
4/22/2001 20.0
4/30/2001 19.0
5/07/2001 19.0
6/11/2001 10.0
7/25/2001 7.0
8/16/2001 5.0
8/30/2001 8.0
9/11/2001 8.0
9/18/2001 9.0
10/04/2001 5.0
10/10/2001 6.0
10/30/2001 5.0
11/07/2001 4.0
12/06/2001 5.0
12/17/2001 4.0
12/26/2001 2.0
2002-2003
Sample Date Level (ppm)
1/14/02 3.0
1/24/02 5.0
2/21/02 2.0
3/24/02 3.0
4/21/02 4.0
5/06/02 4.0
6/17/02 2.0
7/14/02 3.0
9/30/02 16.0
10/06/02 60.0
10/21/02 113.0
11/04/02 52.0

11/18/02

48.0

12/02/02 70.0
12/17/02 63.0
12/30/02 44.0
1/16/03 60.0
1/28/03 59.0
2/13/03 61.0
2/27/03 69.0
3/24/03 63.0
4/07/03 22.0
4/14/03 36.0
4/21/03 32.0
5/05/03 38.0
5/20/03 29.0
6/01/03 33.0
6/16/03 15.0
7/01/03 27.0

7/15/03

10.0

8/11/03

17.0

8/25/03

17.0

9/03/03

19.0

9/08/03

21.0

9/15/03

12.02

9/22/03

9.0

9/29/03

18.0

10/06/03

9.0

10/13/03

10.0

10/20/03

5.0

11/12/03

2.0

11/23/03

4.0

12/08/03

7.0

12/14/03

12.0

12/23/03

4.0

2004
Sample Date Level (ppm)

1/04/04

11.0

1/11/04

17.0

1/18/04

16.0

2/03/04

10.0

2/09/04

14.0

2/15/04

5.0

3/10/04

10.0

3/22/04

8.0

4/05/04

5.0

4/14/04

6.0

4/25/04

5.0

5/02/04

3.0

5/03/04

3.0

5/18/04 4.0
6/21/04 2.0
7/06/04 1.0
7/20/04 1.0
8/04/04 8.0
8/09/04 7.0
8/30/04 3.0
9/13/04 5.0
9/27/04 4.0
10/03/04 5.0
10/11/04 5.0
10/27/04 5.0
11/03/04 4.0
11/23/04 5.0
12/01/04 5.0
12/21/04 4.0
12/28/04 7.0
2005
Sample Date Level (ppm)
1/13/05 6.0
1/26/05 6.0
2/12/05 5.0
2/24/05 3.0
3/06/05 2.0
3/23/05 9.0
3/31/05 3.0
4/14/05 3.0
4/20/05 9.0
4/21/05 6.0
4/23/05 12.0
5/01/05 18.0
5/02/05 10.0
5/06/05 8.0
5/27/05 5.0
6/09/05 5.0
7/11/05 6.0
7/28/05 2.0
8/09/05 4.0
8/22/05 2.0
9/06/05 6.0
9/19/05 2.0
10/02/05 9.0
10/09/05 11.0
10/09/05 11.0
11/06/05 9.0
12/12/05 3.0
12/19/05 1.0
         
2006
Sample Date Level (ppm)
1/10/06 1.0
1/17/06 1.0
1/30/06 2.0
2/08/06 5.0
2/15/06 4.0
3/13/06 1.0
3/20/06 2.0
4/14/06 2.0
4/23/06 4.0
5/15/06 4.0
5/30/06 2.0
6/12/06 2.0
6/30/06 2.0
7/11/06 4.0
7/17/06 3.0
7/24/06 5.0
7/31/06 3.0
8/14/06 5.0
8/28/06 3.0
9/11/06 2.0
9/25/06 2.0
10/02/06 2.0
10/22/06 1.0
10/30/06 1.0
11/20/06 2.0
11/27/06 2.0
12/18/06 2.0
2007
Sample Date Level (ppm)
12/18/06 2.0
1/15/07 1.0
1/28/07 4.0
2/03/07 4.0
2/28/07 4.0
3/07/07 4.0
4/04/07 3.0
4/12/07 3.0
4/26/07 3.0
5/04/07 4.0
5/21/07 3.0
6/12/07 3.0
6/18/07 4.0
7/03/07 1.0
7/30/07 1.0
8/13/07 NTD
8/27/07 1.0
9/25/07 <1.0
10/08/07 <1.0
10/16/07 <1.0
11/07/07 <1.0
11/14/07 <1.0
2008
Sample Date Level (ppm)
1/11/08 <1.0
1/21/08 <1.0
2/02/08 <1.0
2/20/08 <1.0
4/01/08 <1.0
4/10/08 <1.0
4/27/08 <1.0
5/13/08 <1.0
5/19/08 NTD
6/03/08 <1.0
6/16/08 <1.0
7/07/08 <1.0
7/21/08 NTD
8/06/08 NTD
8/18/08 <1.0
9/02/08 <1.0
9/15/08 NTD
9/29/08 NTD
10/29/08 1.0
11/23/08 1.0
12/03/08 1.0
12/29/08 1.0
2009
Sample Date Level (ppm)
1/21/09 1.0
1/28/09 1.0
3/09/09 1.0
3/17/09 1.0
3/27/09 1.0
4/13/09 NTD
4/19/09 <1.0
4/23/09 1.0
4/30/09 <1.0
5/11/09 1.0
5/26/09 2.0
6/22/09 1.0
7/23/09 1.0
8/03/09 3.0
8/11/09 4.0
8/16/09 3.0
9/21/09 3.0
9/28/09 1.0
10/04/09 4.0
10/12/09 3.0
2010
Sample Date Level (ppm)
1/12/10 2.0
1/19/10 1.0
1/29/10 2.0
2/09/10 2.0
2/16/10 1.0
3/17/10 1.0
4/11/10 1.0
6/01/10 1.0
6/14/10 1.0
9/21/10 1.0
9/30/10 <1.0
10/20/10 <1.0
11/03/10 <1.0
11/10/10 <1.0
11/21/10 <1.0
12/21/10 <1.0
         
2011
Sample Date Level (ppm)
1/06/11 1.0
1/16/11 <1.0
1/22/11 <1.0
2/04/11 <1.0
3/01/11 <1.0
3/09/11 <1.0
4/19/11 <1.0
4/26/11 <1.0
5/08/11 <1.0
5/3111 NTD
6/13/11 NTD
7/27/11 <1.0
8/04/11 NTD
9/01/11 <1.0
10/2711 <1.0
10/10/11 <1.0
10/20/11 <1.0
11/01/11 <1.0
2012
Sample Date Level (ppm)
01/01/12 NTD
02/08/12 NTD
03/04/12 <1.0
03/14/12 NTD
04/25/12 <1.0
05/22/12 <1.0
07/10/12 <1.0
07/23/12 NTD
08/06/12 NTD
08/20/12 <1.0
09/04/12 1.0
09/27/12 1.0
10/16/12 2.0
10/29/12 1.0
11/04/12 1.0
11/17/12 1.0
12/02/12 1.0
12/15/12 1.0
12/31/12 1.0
2013
Sample Date Level (ppm)
01/13/13 2.0
01/29/13 1.0
02/13/13 1.0
02/27/13 1.0
03/17/13 1.0
04/01/13 <1.0
04/16/13 <1.0
04/29/13 1.0
05/14/13 1.0
06/06/13 <1.0
06/24/13 <1.0
07/08/13 <1.0
08/05/13 1.0
08/19/13 1.0
09/02/13 2
09/23/13 1.0
09/28/13 1.0
10/09/13 1.0
11/06/13 1.0
11/20/13 2.0
12/05/13 3.0
12/18/13 3.0
   

 

For additional information:
WDFW Region 6 Office
(360) 249-4628
(ask for the razor clam management staff)