Most King County offices will be closed on Thursday and Friday, Nov. 23-24, 2017, for the Thanksgiving holiday.  
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Beaver Lake Beach A709SB

NOTE: Beaver Lake is monitored through a contract with the City of Sammamish and has a different sampling frequency. ALGAL TOXIN samples are only collected during bloom events and submitted through the Washington State Toxic Algae Program. For more information visit the Washington State Toxic Algae Program database website.
Washington Toxic Algae database