🔬 Ongoing Monitoring
The Lake Vernon Association has been conducting algae monitoring since 2019 as part of a program overseen by the Muskoka Watershed Council. To date, no harmful blue-green algae (cyanobacteria) blooms have been reported in Lake Vernon.
🌞 Why Does Algae Grow?
Warm weather, increased lake water temperatures, and the presence of nutrients such as phosphorus can encourage algae growth in Muskoka lakes. When nutrient levels are elevated, algae can multiply rapidly and form what are known as algal blooms.
🌱 Not All Algae Are Harmful
Most algae are a natural and important part of a healthy aquatic ecosystem. While algae blooms may sometimes appear unsightly, they are generally harmless to people and wildlife.
⚠️ Blue-Green Algae (Cyanobacteria)
Blue-green algae are actually a type of bacteria called cyanobacteria. Under certain conditions, they can multiply quickly and produce toxins that may be harmful to humans, pets, and wildlife.
👀 What Does a Harmful Bloom Look Like?
Harmful blue-green algae blooms often resemble:
- 🟢 Pea soup floating on the water
- 🎨 Spilled green or blue-green paint
- ☁️ Thick surface scum or mats
📖 Learn More
The Muskoka Watershed Council brochure below provides helpful information about the different types of algae commonly found in Muskoka lakes and how to identify potential blue-green algae blooms.
📞 Report Suspected Blue-Green Algae
If you suspect a blue-green algae bloom, avoid contact with the water and report it immediately to:
- Ontario’s Spills Action Centre1-800-268-6060 and
- Lake Vernon Association by emailing lva@lake-vernon.ca with Subject Line Algal Bloom
Aside from expensive mass treatment of a waterbody with chemicals, there is no resolution of a confirmed bloom except to wait until it dissipates or repeat lab tests confirm microcystin levels are no longer harmful