Members of the Memphremagog Watershed Association were quick to respond to extensive sightings of possible cyanobacteria (blue-green algae) this past Saturday. Many members of the two-year-old association have been trained as observers of invasive and nuisance species of plants and animals. Due to occasional sightings of cyanobacteria over the past few years on both sides of the border vigilance has increased.

Cyanobacteria has the potential to be toxic to humans and animals, therefore it is of great concern if it becomes present in the lake. Sightings ranged from most of Holbrook Bay, Strawberry Acres boat launch, the bluffs area, and Derby Bay. Two samples from the Holbrook Bay area were sent to the LaRosa Lab in Waterbury for testing by the State of Vermont. Alerts were sent to Memphremagog Conservation Inc. (MCI) in Canada as the two associations work closely to monitor water quality.

The MWA has also had an ongoing project to monitor seven tributaries to the lake to identify high levels of nutrients and sediment. Waterfront property owners, boaters, and fisherman are urged to contact MWA (memphremagogwatershed@gmail.com or call 334-2304) if they see or suspect cyanobacteria. Owners of dogs are urged to keep their pets out of the water until confirmation has been verified by the State.