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Lakes experiencing toxic algae blooms are listed below
BLACKMANS
LAKE
- WARNING
11/23/2020 - Blackmans Lake is experiencing intermittent blue-green algae blooms with
green scum floating on the surface near the shoreline. The lake was
screened by SWM staff on 11/22/2020 and small patches of scum were present at the boat launch. Previous sample results how that Microcystin, a liver toxin, were detected
at 22 ppb. This is above the WA state Recreational limits of 8
ppb. WARNING signs will remain at the public boat launch and Hill Park. If
you would like to sign up for alerts, please visit the City of Snohomish website
and sign up for NewsFlash updates.
LAKE CASSIDY
- WARNING
11/23/2020 - Lake Cassidy is experiencing a blue-green algae bloom
with bands of green scum floating on the surface near the
shoreline. The lake was screened by SWM staff on 11/23/2020 and scum was present at the boat launch. Previous sample results show that Microcystin, a liver toxin, were detected at 4.4 ppb. This is below the WA state
Recreational limits of 8 ppb. WARNING signs will remain posted at the boat
launch and the Centennial Trail dock.
LOST LAKE
- WARNING
11/23/2020 - Lost Lake is experiencing a heavy blue-green algae bloom
along the northwest shoreline. The lake was screened by volunteers on
11/22/2020 and scum was present. Previous samples contained Microcystin, an algae known to produce
Microcystin, a liver toxin. A WARNING sign was posted at the boat launch.
Please follow the guidelines on the WARNING sign when recreating.
