Public Angling Estate | Blue-Green Algae

Date published: 07 September 2023

Blue-green algae also known as cyanobacteria, has been detected in multiple locations across Northern Ireland including some lakes and rivers in the Public Angling Estate (PAE).

What is blue-green algae?

Algal blooms occur naturally due to factors such as water temperature, water clarity, sunlight, and nutrient availability. These blooms are most common from May through to September when suitable weather conditions combine with a ready supply of nutrients.

Blue-green algae | Public Angling Estate

Where an Algal bloom has been confirmed, local councils and water operators will be informed by the Northern Ireland Environment Agency (NIEA). Local councils and water operators are responsible for warning users, putting up signs and restricting access at PAE locations. They are also responsible for deciding when restrictions can be removed.

To find out more about Blue-Green Algae, locations it has been confirmed, how to report suspected outbreaks, what is being done to deal with it and more, click on the following link: Blue-Green Algae

Guidance for anglers

Anglers are reminded that if they are at a river or lake and suspect there is blue-green algae they should report it through the Bloomin’ Algae App (information on the above link) and take the following precautions:

  • Avoid contact with the algae.
  • Do not eat fish caught recreationally from the water.
  • Observe and abide by any warning notices positioned around the water.

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