King County Department of Natural Resources collected water samples and submitted them to the State Toxic Algae Program. The information was reviewed by Public Health – Seattle & King County. At this time, areas of clear water are still open for activities. Tests have revealed that the toxins are currently found in the scummy algae that accumulate in some places along the shore.
People and pets should not wade or play in the lake where the scum has accumulated. Dog owners should be especially cautious not to allow animals to drink from the lake in these areas. If there is water contact for a pet, it is important to rinse well to remove all algae.