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Caution: Cyanobacteria Algae Blooms at Highland Lake

Posted on
October 30, 2024
by
Town Manager's Office
Due to the unprecedented warm weather, Highland Lake is experiencing cyanobacteria algae blooms in some areas. The public is advised to exercise caution and avoid contact with blooms if they are observed in your area. Keep children and pets away from algae blooms and wash off any exposed skin or fur with clear water.  Blue-green algae, also known as cyanobacteria, occur naturally in lakes and ponds throughout Connecticut. These microscopic organisms are components of the aquatic food chain. In ordinary circumstances, cyanobacteria cause no apparent harm, however warmer water temperatures and high nutrient concentrations may induce a rapid increase in their abundance. This response is commonly called a “bloom” because algal biomass increases to the extent that normally clear water becomes markedly turbid. This tainted water takes on a green, blue-green or reddish-brown colored hue. It may look to have surface scum, mats or film. It can be discolored and have streaks. It may look like green paint and have blobs of green floating below the surface. The town will continue to monitor the changing conditions and the water quality of the lake.