Cyanobacteria Safety and Risk Assessment

When it comes to cyanobacteria, only you can decide the level of risk you are comfortable with. Always perform a self-assessment before recreating in the water. When in doubt, err on the side of caution to avoid potential exposure. Below…

Navigating the Healthy Swimming Mapper

The Healthy Swimming Mapper from the New Hampshire Department of Environmental Services is a great way to stay up-to-date on cyanobacteria activity in the state. The map displays areas where cyanobacteria blooms and fecal bacteria have been reported, with different…

Cyanobacteria Bloom Virtual Training Resources

Wentworth Watershed Association has recently held a virtual training on cyanobacteria blooms. This educational presentation, given by Executive Director Julie Brown, was recorded as a resource for anyone who missed the live training events or would like to refer back…

Safeguard Your Lake Days: Take Action Now to Prevent Harmful Algal Blooms

Check out article being published in next week's GSN by our partners in lake protection in Wolfeboro: Cyanobacteria, also known as blue-green algae, are bacteria that have lived in our lakes for millions of years. They naturally occur in small…

No Active Cyanobacteria Alerts or Warnings on Lake Wentworth or Crescent Lake as of 6/28/24

The alert issued in early June has been removed by DES. Information about that bloom can be found below. Remember- "When in Doubt, Stay Out". Always look at the water before recreating. If you suspect a bloom that looks like…

Summer Is Off To a Bad Start for Cyanobacteria in NH Waters

By PAULA TRACY, InDepthNH.org May 28, 2024 Dolichospermum- cyanobacteria, along the shores Lake Kanasatka, NH What a cyanobacteria bloom looks like in New Hampshire. By PAULA TRACY, InDepthNH.org CONCORD – It is not even technically summer yet, but it is starting out…

*LIFTED* Cyanobacteria ALERT issued for Lake Wentworth 8/24/23

A cyanobacteria ALERT has been issued for Lake Wentworth, Wolfeboro. As previously mentioned, surface blooms are dynamic and can rapidly change and accumulate in various locations around a water body. Cyanobacteria activity was reported again on August 23, appearing as green clouds…

As of June 14th and June 15th NHDES has Issued a Cyanobacteria ADVISORY Removed 6/2/23

6/21/2023- We just got word from NH DES that all samples collected this morning from both lakes "Look Good"! They are lifting the Advisory as of this afternoon. These blooms can pop back up, so please report to the state,…