On Monday, January 30th, City staff noticed potential algae bloom along the lakeshore near Davies Beach. The appearance of the algae bloom warrants further investigation.
Update as of 2-5-23
The City, in coordination with Snohomish County, have identified the algae bloom observed on Monday, January 30th near Davies Beach. We found an abundance of cyanobacteria, Aphanizomenon and Anabaena. This species has the potential to produce toxins, although we are not able to test if toxins were present. The lab able to test for toxins is not accepting samples at this time. Out of an abundance of caution, the City will be following guidelines from the Snohomish County Health District as if toxins were present. We will continue to monitor the lake over the next two weeks (through 2/13/2023) for any other algae bloom occurrences, and the warning signs will remain in place during this time. If no other blooms are detected, then the signs will be removed.
Out of an overabundance of caution, while we further investigate the occurrence, we are posting Toxic Algae Signs at each of the public beaches warning the public about this potential occurrence. We want to reiterate that we do not have confirmation if the algae observed yesterday contains toxins, but want to be overly cautious until we know more.
Please follow the warnings on the sign. The City will update the community as we know more information.
If you have any questions, please contact the Surface Water Manager at 425-330-8562.