Anderson Lake Closed due to Toxic Algae Al Bergstein 2 years ago Please don’t let you or your dogs swim or get near it. It could kill them. Share this:Print What makes Anderson Lake so unusually toxic? Scientists to try to find answer – PDNDateApril 22, 2013In relation toPuget SoundSunshine causing algae blooms in Western Washington watersDateMay 10, 2012In relation toAround the SoundAnderson Lake at Warning LevelDateNovember 30, 2018In relation toJefferson County