Three Mile Lake Association

08/31/2026

08/28/2026

That backyard mosquito fogging? It's killing more than mosquitoes.

Permethrin — the broad-spectrum insecticide used in property fogging services — kills every insect it touches: bees, dragonflies, monarch butterflies, cicadas. It passes into bird eggs, reducing fledgling survival. Concentrations cause brain damage in frogs and salamanders. On a moderately windy day, it can travel up to 120 metres from where it was sprayed.

MWC's Chris Brew explains what permethrin actually does to Muskoka's ecosystem — and the low-tech alternatives that actually work.

Read more:
🔗 linktr.ee/muskokawatershed

08/16/2026

Did you know the frequency and magnitude of blue-green algal blooms continue to rise across Canada and are expected to be further exacerbated by the impacts of climate change and traditional land use practices?

Read our blog post to discover:
➡what blue-green algae (cyanobacteria) is;
➡the impacts of algal blooms and how you can help limit them;
➡the role of climate change and invasive species; and
➡how to take action.

https://watersheds.ca/why-is-blue-green-algae-cyanobacteria-becoming-more-prominent/

07/27/2026

A team of Three Mile Lake Association volunteers built and launched a Floating Treatment Wetland pilot yesterday. Two FTW prototypes were placed in the Six Mile creek, at the East end of the lake. The plant roots absorb phosphorous and can help reduce blue green algae.

07/26/2026

Members and Volunteers of the TMLA building the Floating Treatment Wetland prototype.

07/25/2026

TMLA volunteers were out on Three Mile Lake sampling offshore and nearshore sites for the Muskoka Watershed Council Algae Monitoring program.

07/23/2026

A few years ago, the Muskoka Conservancy purchased 150 acres of upland forest and wetland ecosystems to provide habitats for various species at risk and also to protect headwaters for Three Mile Lake.

We did a site monitoring visit there today (there is no trail and it is not open to the public). We had to bushwack 40 minutes off Stevenson Rd 2 to access the boundary for the Source of Three Mile Lake Nature Reserve.

07/23/2026

A fun reel from our public facebook group back in 2021.

07/22/2026

One Floating Treatment Wetland prototype is almost finished. Our team is getting excited for build/plant and launch day this coming Sunday in Six-Mile Creek. The second prototype will be constructed using black flexible drain pipe.

07/20/2026

Hi everyone! We had such a great time at the TMLA Canada Day Boat Parade, but in all the excitement we forgot to get the names and contact information for the 2nd and 3rd place winners.

If you were one of the winners, or know who they are, could you please send us a message or tag them in the comments? We'd really appreciate your help. Thanks so much, and congratulations again to all who participated! 🎉🚤