Shoreline areas of Blackmans Lake were checked on Friday, November 17th and no evidence of algae scum was observed. The WARNING signs posted at Hill Park and Ferguson Park were downgraded to CAUTION signs. Because algae scum has been intermittently present, advisory signs will remain posted.
The CAUTION signs advise lake users of the potential for exposure to toxic algae. It is especially important to avoid areas of algae scum because this is where the toxin levels are the highest. Also be aware that lake conditions and locations of scum can change from day to day.
CAUTION signs advise the following:
- Do not swim in areas of scum
- Do not drink lake water
- Keep pets away from the lake
- Clean fish well and discard guts
- Avoid areas of scum when boating
Toxic algae can cause serious illness in humans who drink or play in affected waters. Pets that drink the water are at particular risk. If you or your pet are exposed to a blue-green algae bloom and have unexplained sickness or signs of poisoning, call your health care provider or veterinarian.
Please visit Snohomish County Lakes to see up-to-date testing information, sign up for alerts, and answers to commonly asked questions (choose the “Toxic Algae” link from the main page).