Our Lake, Our Future

Three Mile Lake Association is made up of a small group of individuals and volunteers committed to preserving our lake for future generations.

Located in the Township of Muskoka Lakes, District of Muskoka, Three Mile Lake needs the support of everyone who enjoys the lake today in order to protect its unique characteristics and recreational water quality.

Help make a difference; join today!

Water Quality Update

Visual observations of Three Mile Lake on July 31st by the Simcoe Muskoka District Health Unit confirmed the likelihood of a blue-green algal bloom. The MECP collected a water sample from the Deebank Village area (west end of the lake) on August 1, 2018 and confirmed it.

Note that since 2011, the MECP lab results have regularly exceeded the safe drinking level, but they have NOT exceeded the safe recreational water (swimming) level. Swimming and other water sport activities should be avoided in areas where the blue-green algae bloom is visible.

The MECP lab results for microcystins levels are below. The safe drinking maximum is 1.5 µg/L. Past history shows that sample results from separate locations can be very different.
Our own weekly testing at two locations over the entire summer show microcystins levels below 0.2 µg/L.

August 1st – 1.5 µg/L
August 14th – 0.56 µg/L

View Archive


Shoreline Renaturalization Workshop

The Three Mile Lake Association is hosting a Shoreline Renaturalization Workshop on Saturday, June 1 from 10:00 am to 11:30 at Ullswater Community Centre

Three Mile Lake Association Annual General Meeting

The Three Mile Lake Association Annual General Meeting is July 27, 2019.

Muskoka Lakes Association Seedling Sale

  MLA Seedling day is quickly approaching!   The annual MLA Seedling Day is almost here. Saturday, May 18th, 2019 to pick up your seedlings at the Port Carling…