| Confirmed blue green algae locations 2024 | Date of last confirmation |
| Lower Lough Erne - Rossigh Bay | 07/05/2024 |
| Lough Neagh - Rea's wood | 06/05/2024 |
| Mill Lough, County Fermanagh | 24/04/2024 |
| Lough Neagh - Rea's Wood (Forest) | 18/04/2024 |
| Moor Lough, County Tyrone | 03/04/2024 |
| Lough Neagh - Kinnego Bay | 27/03/2024 |
| Toome Canal | 20/02/2024 |
| Lough Neagh - Cranfield | 16/02/2024 |