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The original item was published from 11/29/2018 1:17:00 PM to 8/13/2019 12:00:07 AM.

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Posted on: November 29, 2018

[ARCHIVED] Anderson Lake at Warning Level

November 29, 2018
FOR IMMEDIATE RELEASE
Contact: Michael Dawson, Water Quality Manager
Jefferson County Public Health
360-385-9444 x301

Anderson Lake at Warning Level

Port Townsend – A toxic cyanobacteria (bluegreen algae) bloom that has kept Anderson Lake closed since early June has dissipated. Two consecutive samples taken by Jefferson County Public Health (JCPH) on Tuesday, November 13 and Monday, November 26 showed that toxins have declined to safe levels. The anatoxin-a concentrations were found to be 0.168 and 0.129 micrograms per liter, respectively, and both of those samples are below the 1 microgram per liter recreational guideline set by the Washington Department of Health. Microcystin was found in the November 13 sample at concentrations below the recreational guideline of 6 micrograms per liter and it was not detected in the November 26 sample. With the recommendation from JCPH, Anderson Lake State Park will remove the closure signs and post the lake at a Warning level. Anderson Lake State Park will have limited parking available due to the gate remaining closed this season, but the lake will be open for walk-in fishing.

Algae species that can produce toxins are still present, and blooms can develop even in the winter, so the public is urged to follow these guidelines:

  • Use the lake at your own risk.
  • Avoid contact with areas of scum, or water that is green in color. Keep children and pets out of the water.
  • Clean fish well and discard the guts. Some algae toxins are known to accumulate in fish tissue.

Jefferson County Public Health has monitored local lakes for cyanobacteria since 2007. Regular monitoring of blooms, and toxin testing, have ended for the season but will resume in April, 2019.

To check the status of Jefferson County Lakes and learn more about toxic cyanobacteria monitoring, consult the JCPH website at https://www.jeffersoncountypublichealth.org/723/Lake-Status or call (360) 385-9444. For fishing seasons and regulations see the Washington Department of Fish and Wildlife website www.wdfw.wa.gov/fishing. Information on visiting Anderson Lake State Park is available at www.parks.state.wa.us/240/Anderson-Lake.

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