Derg Dl — water body quality
near Pettigoe, Donegal
Derg Dl is a lake in Donegal, near Pettigoe, covering 8.6 km².
Official classification
Good
Assessed 2026
Good ecological status under the Water Framework Directive means the biology and chemistry of this water body depart only slightly from near-natural conditions for its type, which meets the Directive’s environmental objective.
| Stretch | Status |
|---|---|
| Derg Dl | Good |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- Lake
- Area
- 8.6 km²
- County
- Donegal
- Location
- 54.6167, -7.8749
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.