- Location
- County Fermanagh , Northern Ireland
- Primary inflows
- River Erne
- Primary outflows
- River Erne
- Catchment area
- 1,680 mi (4,350 km )
- Basin countries
- Northern Ireland and Republic of Ireland
- Max length
- Lower: ~26 mi (42 km), Upper: ~12 mi (19 km)
- Surface area
- Lower: ~42.3 mi (110 km ), Upper: ~13.3 mi (34 km )
- Average depth
- Lower: ~39 ft (12 m), Upper: ~7.5 ft (2.3 m)
- Max depth
- 213.25 ft (65.00 m)
- Islands
- 150+
- Settlements
- Enniskillen , Belturbet , Belleek , Pettigo , Kesh , Trory , Ballycassidy , Killadeas , Derrylin
- Official name