Blue-green algae warning lifted for Peninsula Lake


The Simcoe Muskoka District Health Unit has lifted the advisory for Peninsula Lake where blue-green algae was previously detected. A cautionary notice was issued on September 19.

Blue-green algae is a bacteria that occurs naturally in fresh water. When it occurs in large concentrations, forming a green scum over the water, it can release toxins that are harmful to humans and animals. (Read a related Doppler story here.)

For more details about blue-green algae, visit the health unit website at, or call Health Connection at 705-721-7520 or 1 877-721-7520 weekdays from 8:30 a.m. to 4:30 p.m.

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  1. I’m not sure of all the facts but on a recent trip over Lake Erie, about two weeks ago it sure looked very similar to Pen Lake earlier this fall.
    On a second pass over Lake Erie today (11th) there are still signs of a green current and wind blown variance in this lake.
    I wonder if anyone knows what this is exactly as, like I said, from a plane it sure looks very similar to that which was observed on Peninsula Lake?

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