Hi All,

Finally some good news and just in time for the long holiday weekend.  With the unofficial end of summer arriving this weekend, we are pleased to announce that the Cyanobacteria Advisory that has plagued us most of the summer has finally been lifted.  However, we all must still keep our eyes open as a bloom could return.  You can read the official notice from NH DES below.  Have a great Labor Day weekend.  And the weather forecast is looking wonderful.


Hi All,  

Some good news today! The cyanobacteria WARNING (ADVISORY) that was issued on 6 July 2023 has been REMOVED for Province Lake, Effingham / Wakefield as of today 31 August 2023. It was very windy during sampling today, but with no reports of visual accumulations over the past week and today’s samples being low density, we are hopeful that the cyanobacteria density has significantly declined. While the bloom accumulation has dissipated, NHDES advises that lake-goers look out for discoloration or surface accumulations in the future. Please continue to monitor your individual shoreline for changing conditions.  

The red cyanobacteria advisory signs can now be removed from public access points. 

Thank you all for your communication. If you see cyanobacteria in the future, please report it here!  

Please forward this email to other residents / community members who need this information. If they would like to be added to the email distribution list, please have them sign up through this form to be directly included on future communications from NHDES. If you prefer to no longer receive these sampling updates, simply respond, and indicate “unsubscribe”.  

For more information:  
Report a CyanoHAB 
Healthy Swimming Mapper 
Frequently Asked Questions


Kate Langley Hastings
Cyanobacteria HAB Program Coordinator
Watershed Management Bureau, Water Division
New Hampshire Department of Environmental Services
29 Hazen Drive, P.O. Box 95, Concord, NH 03302-0095