UPDATE: Cyanobacteria ALERT for Mascoma Lake REMOVED

UPDATE: The cyanobacteria WARNING (ADVISORY) that was issued on 4 August 2023 has been REMOVED for Mascoma Lake as of 11 August 2023. While the bloom accumulation has dissipated, NHDES advises that lake-goers look out for surface accumulations in the future. Please continue to monitor your individual shoreline for changing conditions.  

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Posted August 4, 2023:

See the State website at Health Swimming Mapper for more information.

The following information was provided by Martha Rich, Mascoma Lake Association and posted to the Enfield Listserv:

Kate Hastings of the NH Department of Environmental Services writes: 

"A cyanobacteria ALERT has been issued for Mascoma Lake, Enfield. Cyanobacteria activity was first observed on 3 August, appearing as light green streaks and ribbons of material accumulating along  [a shoreline near Shaker Blvd, on the 4A side of the lake]. 

This alert is based on an image, not a sample review. Sampling is scheduled for 4 August. I will email again with results.  
NHDES urges lake users to perform visual assessments of the water prior to recreating. Stay out of the water and keep pets out if you can see any visual accumulation or coloration of the water and report it. 

This is not an official cyanobacteria advisory, and signs do not need to be posted. I will be in contact again if conditions change, and an official advisory is issued."