an tSeisigh — water body quality
near Portnablagh, Donegal
an tSeisigh is a lake in Donegal, near Portnablagh, covering 22.9 ha.
Official classification
Moderate
Assessed 2026
Moderate is the first Water Framework Directive class that falls short of the Directive’s objective: the biological communities here differ moderately from those expected in a near-natural water body of this type, so a programme of measures applies.
| Stretch | Status |
|---|---|
| an tSeisigh | Moderate |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- Lake
- Area
- 22.9 ha
- County
- Donegal
- Location
- 55.1725, -7.9336
Others in Donegal
This page shows water-quality information, not swim-safety advice. For today's conditions and swim-safety guidance, check Water Safety Ireland.
Official classifications on this page contain EPA Water Framework Directive ecological status data © Environmental Protection Agency, licensed under CC-BY-4.0.