This is a local Alert for lake users to be on the lookout for accumulations of cyanobacteria which has been observed on several shorelines (both eastern and western shores).

Only DES can issue official advisories once samples are collected and cell concentrations of cyanobacteria are confirmed to exceed 70,000 cells/ml of lake water.

NHDES advises lake users to avoid contact with the water in areas where surface scum is visible. NHDES also advises pet owners to keep their pets out of the water

when scum is visible. Some cyanobacteria produce toxins that are stored within the cells and may be released upon cell death. Toxins can cause both acute and chronic

health effects that range in severity.

Be cautious of lake water that has a surface scum, changes colors, or appears to have green streaks or blue-green flecks aggregating along the shore.

Because labs are closed on the weekend, the LWA will not be able to deliver a sample to Concord until Monday and that is the plan.