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District Investigating Cause Of Blue Green Algae In Penn Lake

Posted: 2019-08-23 07:30:12 By: hbr

The District wants to get to the bottom of what’s causing blue-green algae blooms on Peninsula Lake.

During their most recent meeting, District council agreed to launch a causation study for Peninsula Lake.

The lake experienced a blue-green algae bloom in 2017, and according to District staff, it is the second highest in terms of development potential. There’s been modest investment in water quality initiatives to date, said staff, and the lake association is highly engaged. Staff also recommended that causation studies be undertaken for Stewart, Leonard and Three Mile Lakes over the next two years.

The District undertakes a comprehensive water quality monitoring program annually. The data collected from the program is used to identify lakes that are considered vulnerable based on specific water quality indicators such as blue-green algae blooms or increasing phosphorus levels. When a lake is listed as vulnerable, by law the District is required to initiate a waterbody-wide causation study to determine the cause and contributing factors to the water quality issues

There are currently nine lakes considered as vulnerable in accordance with one or more water quality indicators. The district has confirmed blue green algae blooms on Bruce Lake, Clarke Pond, Boyd’s Bay on Lake Muskoka, Leonard Lake, Stewart Lake and Three Mile Lake, in addition to Peninsula Lake.