River Lagan (Dromara) — water body quality
near Annahilt, Lisburn and Castlereagh
River Lagan (Dromara) is a river in Lisburn and Castlereagh, near Annahilt, extending 8.2 km.
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 |
|---|---|
| River Lagan (Dromara) | Moderate |
Overall status reflects the worst stretch (precautionary).
This water body
- Type
- River
- Length
- 8.2 km
- County
- Lisburn and Castlereagh
- Location
- 54.3610, -6.0118
Others in Lisburn and Castlereagh
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.