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Issued 06/19/2024, Canceled 06/29/2024


Swains Lake

Cyanobacteria WARNING

Cyanobacteria WARNING
Cyanobacteria WARNING

Time & Location

Issued 06/19/2024, Canceled 06/29/2024

Swains Lake, Swains Lake, Barrington, NH 03825, USA

About the event

A cyanobacteria warning has been issued at your lake, please see below for details.

Warnings are issued when cell counts exceed 70,000 cells/mL. NHDES advises lake users to not wade or swim in the water during a warning. Please also keep pets and livestock out. The warning is not based on a toxin evaluation and is intended as a precautionary measure for short term exposure. Please see our newly updated FAQs for more information.

NHDES will resample in a week. I will reach out to you before then for updates. If you have information on where accumulated material is being observed at that time, please let us know to guide our sampling efforts. Warnings remain active until the bloom subsides. You can also see warning details on the Health Swimming Mapper.

To the health officer or other official responsible for posting signs, please post our red cyanobacteria warning signs at all public access points. Please let me know if you do not have any to post or if you need replacements.

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