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OUR LAKE REMAINS FRAGILE

SEPTEMBER 2019

Summer 2019 comes to an end for our lake, with conditions much like those seen in recent years. Cyanobacteria or blue-green algae blooms have appeared on the surface and they are moved around according to the winds. It is always disappointing to see this progression of blue-green throughout the summer, mainly caused by the intake of phosphorous. But let’s get back to the summer of 2019.

Spring proved cold and rainy. The lake was fed with large amounts of phosphorous brought in by these strong rains, so much so that as early as June, we observed a reduction in water clarity. Then we experienced two months of summer heat and dryness. The water became clearer in July but gradually, during August, the algae began to multiply in water that was both warm and rich in phosphorous. By mid-August, blooms were noticed on the lake.

The quality of water in the lake depends directly on reducing phosphorous content. That is why Renaissance Brome Lake has been committed in recent years to renaturalizing shorelines. We must also attack the effluents in the drainage basin and better manage water runoff. This is especially important during a period where climate patterns are so irregular, including a tremendous increase in torrential rains.

For the volunteers at Renaissance Brome Lake, far from being discouraged by these events, are motivated to working harder than ever to improve the quality of the water in our lake.

 

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