09/06/2024
Lake Winnipesaukee Cyanobacteria Update
From the NHDES (9/5/2024)
The cyanobacteria warnings have been decreased to watches for Governor’s Island, The Broads, and Wolfeboro areas of Lake Winnipesaukee. The watches remain for the Alton and Tuftonboro areas. See map below.
Sampling performed September 4th revealed continued widespread but low densities of Gloeotrichia in all highlighted areas of Lake Winnipesaukee below. In addition to this, Gloeotrichia continued to be reported in these areas of the lake over the last week (reported August 27 – September 1), but fewer dense aggregations were observed over time. The watch status will be reevaluated and removed for all general areas in a week if no further cyanobacteria reports are received.
The map below shows the general names of the large sections of Lake Winnipesaukee, and reference the corresponding tables for more details. Specific bloom locations reported to NHDES (photos and sampling information when applicable) within these general areas can be found on the Healthy Swimming Mapper. The resampling results shared below are not reflected as reported bloom points on the map. You can help us track the bloom moving forward by reporting through the bloom report form.
