Derg River (Crocknacunny) — water body quality
near Barnesmore, Donegal
Derg River (Crocknacunny) is a river in Donegal, near Barnesmore, extending 13.5 km.
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 River (Crocknacunny) | Good |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- River
- Length
- 13.5 km
- County
- Donegal
- Location
- 54.6516, -7.8716
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 DAERA/NIEA Water Framework Directive classification data © Crown copyright, licensed under Open Government Licence v3.0.