Harmful cyanobacterial bloom advisories in Massachusetts

Harmful Cyanobacterial Bloom Advisories in Massachusetts current as of October 17, 2019

Updated: Oct. 17th, 2019, 10:13 am
  • Arlington Reservoir – Arlington
  • Billington Sea – Plymouth
  • Lake Boone – Stowe
  • Lake Holbrook – Holbrook
  • Lake Warner – Hadley
  • Magnolia Pond – Northampton
  • Plunkett Reservoir – Hinsdale
  • Santuit Pond – Mashpee
  • South Wattupa Pond – Fall River and Westport
  • Triangle Pond – Northampton

Please note – This should not be considered a complete list of all advisories in Massachusetts. This list includes waterbodies that have been reported to DPH by local, state and federal partners that manage or regulate the respective waterbody. If you think an algal bloom may be present you are encouraged to avoid contact with the water – WHEN IN DOUBT, STAY OUT!  To see examples of what algae blooms look like, please visit the Identifying cyanobacterial blooms and scums web page.