Water Quality

Monitoring of water quality has been conducted by volunteers for over 20 years.

Fall 2017 Update: Eagle Lake Water Advisory

Every spring a sample of water is sent to the Dorset Environmental Science Center to be analyzed for phosphorus content. Phosphorus is measured because it is the element that controls algal growth. Generally, more phosphorus means more algal growth. An increase in phosphorus concentrations in a lake is likely a consequence of human activity in the watershed. Throughout the summer, Secchi disc measurements are also taken to help detect changes in water clarity – this may also indicate changes are occurring in the algal biomass of the lake.

Throughout the summer, water clarity and temperatures are also recorded.  Testing is done in two locations Рthe deepest part of the North and South end of the lake. Eagle Lake has one of the longest histories of consistent lake testing in Ontario thanks to people like Debbie Lamb, who has served on the board for over 20 years.

Results from these tests indicate that the water quality has declined over the last 20 years but, Eagle Lake is still considered to be a low nutrient lake. Visit the Machar Township website to view published results. Remember, we must all remain diligent in protecting the lake for future generations.

Here are a few things we all can do to protect our lake from deteriorating further:

  • Try to maintain a natural shoreline to increase nutrient uptake by plants and reduce erosion and nutrients leaching into the lake
  • Use low phosphorus detergents and soaps in our washing machines and dishwashers
  • Avoid fertilizing our lawns
  • Do not use soaps or shampoos in the lake
  • Pump out your septic tank every 3 – 6 years
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