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Posted on: May 14, 2014

14-023 Anderson Lake closed to water activities due to toxic algae bloom

The Washington State Parks and Recreation Commission is alerting the public that fishing, swimming and other in-the-water activities are closed at Anderson Lake State Park in Jefferson County. The public is also advised to keep pets out of the lake.

The state park remains open for land-based recreation such as picnicking, hiking, biking and horseback riding.

Last Friday, May 9, the Jefferson County’s health department found high levels of the nerve toxin anatoxin-a in water samples. The toxin occurs in blue-green algae that periodically blooms in the lake. Anderson Lake has been closed off and on since the county started monitoring for the algae in 2007.

Anderson Lake had just opened on April 26 for lowland trout fishing. While the closure is disappointing, Washington State Parks wants to make sure people and pets are safe.
The lake will reopen after county health department tests show that water quality is safe for recreation.

More information about the recent closure is on Jefferson County Public Health’s website:

For questions or concerns about toxic algae on lakes in the county, the public should contact Jefferson County Public Health at (360) 385-9444 or check their web page for updates:

For fishing seasons and license requirements, visit Washington Department of Fish and Wildlife’s website:

About Anderson Lake State Park

The 476-acre park is open for day-use only and is located in eastern Jefferson County near Chimacum. Learn more about the park:
Stay connected to your state parks by following Washington State Parks at, and Share your favorite state park adventure on the State Parks blog site at

The Washington State Parks and Recreation Commission manages a diverse system of more than 100 state parks and recreation programs, including long-distance trails, boating safety and winter recreation.

Support state parks by purchasing your annual Discover Pass today, and enjoy a whole year of outdoor fun on Washington’s beautiful state-managed recreation lands. For more information, visit


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