Spot, snap, and report blue-green algae

We need your help in Cumbria and Lancashire!


If you see a potential blue green algal bloom:


Make a note of the time, date and location
If you can, take a photo
Report it to us



How to report blue-green algae


Call the Environment Agency 24/7 on our free incident line: 0800 80 70 60
Check out blooms reported to the UKCEH Bloomin' Algae app in Cumbria & Lancashire here.




Water Users – Please ‘Check, Clean and Dry’


Some of our rivers and lakes contain invasive non-native species. These can pose a threat to our rivers and lakes by disrupting the natural balance of the ecosystem. Water users can unintentionally spread these non-native invasive species on their belongings. Please ‘Check, Clean and Dry’ your footwear, clothing and equipment such as paddleboards and boats between uses to help stop their spread.



Check out blooms reported to the UKCEH Bloomin' Algae App

Bloomin' Algae maps | UK Centre for Ecology & Hydrology

Change the dates to view reports from different periods, change the area code in the url to view blooms for a specific area:

CLA - Cumbria & Lancashire / NEA - North East / YOR – Yorkshire / GMC - Greater Manchester, Merseyside & Cheshire / WMD - West Midlands, EMD - East Midlands / LNA - Lincolnshire & Northamptonshire / EAN- East Anglia / HNL - Hertfordshire & North London / KSL - Kent, South London & East Sussex / THM – Thames / SSD - Solent & South Downs / WSX – Wessex / DCS - Devon & Cornwall

Check out blooms reported to the UKCEH Bloomin' Algae app in Cumbria & Lancashire here.



We need your help in Cumbria and Lancashire!


If you see a potential blue green algal bloom:


Make a note of the time, date and location
If you can, take a photo
Report it to us



How to report blue-green algae


Call the Environment Agency 24/7 on our free incident line: 0800 80 70 60
Check out blooms reported to the UKCEH Bloomin' Algae app in Cumbria & Lancashire here.




Water Users – Please ‘Check, Clean and Dry’


Some of our rivers and lakes contain invasive non-native species. These can pose a threat to our rivers and lakes by disrupting the natural balance of the ecosystem. Water users can unintentionally spread these non-native invasive species on their belongings. Please ‘Check, Clean and Dry’ your footwear, clothing and equipment such as paddleboards and boats between uses to help stop their spread.



Check out blooms reported to the UKCEH Bloomin' Algae App

Bloomin' Algae maps | UK Centre for Ecology & Hydrology

Change the dates to view reports from different periods, change the area code in the url to view blooms for a specific area:

CLA - Cumbria & Lancashire / NEA - North East / YOR – Yorkshire / GMC - Greater Manchester, Merseyside & Cheshire / WMD - West Midlands, EMD - East Midlands / LNA - Lincolnshire & Northamptonshire / EAN- East Anglia / HNL - Hertfordshire & North London / KSL - Kent, South London & East Sussex / THM – Thames / SSD - Solent & South Downs / WSX – Wessex / DCS - Devon & Cornwall

Check out blooms reported to the UKCEH Bloomin' Algae app in Cumbria & Lancashire here.



Page last updated: 31 Jul 2026, 08:29 AM