Lake Status

Toxic Cyanobacteria Monitoring


Some species of cyanobacteria (also known as blue-green algae) can produce toxins harmful to human and animal health. The Jefferson County Water Quality Department monitors the following lakes for harmful blooms:
These lakes have a history of toxic cyanobacteria blooms, are monitored weekly in spring and summer and sampled for toxins monthly if blooms are visible. Other lakes are monitored as time and budget allow. Laboratory results are generally obtained by Friday and lake status is updated on this page. View the Lake Water Quality page for more information about toxic cyanobacteria blooms.

Lake Conditions


To see a map of the lake location, click the name of the lake in the table below.
Lake
Date Last Observed
Status
Notes
Anderson Lake
September 20, 2021
Danger - Lake Closed
- Bloom dissipating
- Toxic cyanobacteria dominant
- Toxins present
Gibbs Lake
September 20, 2021
Toxic Algae Info
- No bloom visible
- Toxic cyanobacteria present
- Toxin level low on 8/3
Lake Leland
September 20, 2021
Toxic Algae Info
- No bloom visible
- Toxic cyanobacteria present
- Toxin level low 8/23
Crocker Lake
September 20, 2021
Toxic Algae Info
- No bloom visible
- Toxic cyanobacteria present
- Toxin level low 8/23
SIlent Lake
August 16, 2021
Clear
- Public report of a bloom 8/6
- No bloom visible 8/10 & 8/16
Tarboo Lake
July 20, 2021
Clear
- Public report of a bloom 7/12
- No bloom visible at boat ramp 7/20
Sandy Shore
August 9, 2021
Clear
- No bloom visible
Teal Lake
July 22, 2021
Clear
- No bloom visible 7/22
- Public report of a red bloom
Glen Cove Lagoon
July 19, 2021
Clear
- Red bloom visible
- No test performed, no public access

Lake conditions can change rapidly and lake status may have changed since the last sample was taken. Sampling is only done at one access point on the lake and conditions may be different elsewhere on the same lake. Regardless of what is posted here, if you observe a green paint-like scum or bloom on a lake follow the recommendations listed at the warning level. If you observe a bloom in a Jefferson County lake, please report it by calling 360-385-9444.

What the Status Sign Means

Clear Lake icon
Clear
No toxins detected in sample, no toxic species present and no bloom visible. Note: there is no sign posted when the lake is clear.
333-271-ToxicAlgaeInfoSign

Toxic Algae Info
When in doubt, STAY OUT!

  • Toxic algae blooms happen in this lake
  • Avoid areas of scum
333-273-ToxicAlgaeWarningSign

WARNING
TOXIC ALGAE PRESENT
Lake unsafe for people and pets 

  • Do not swim or water ski.
  • Do not drink lake water.
  • Keep pets and livestock away.
  • Clean fish well and discard guts.
  • Avoid areas of scum when boating.

Call your doctor or veterinarian if you or your animals have sudden or unexplained sickness or signs of poisoning

333-272-ToxicAlgaeDangerSign

DANGER
KEEP OUT OF LAKE

Lake closed due to toxic algae

Call your doctor or veterinarian if you or your animals have sudden or unexplained sickness or signs of poisoning.