The River Roe: Northern Ireland's Boundary Waterway Through County Tyrone

The River Roe (Irish: An Ró) flows ~34 miles (55 km) through County Tyrone in Northern Ireland, defining landscapes and histories before joining the River Foyle at Derry/Londonderry.

Course & Geography

• Source: Sperrin Mountains (near Lough Fea, ~300 m elevation)
• Flows through: Dungiven, Limavady, Roe Valley Country Park
• Mouth: Foyle estuary at Derry (tidal limit)
• Tributaries: Owenreagh, Curly, Gelvin, Bovevagh rivers

Historical & Cultural Significance

• Traditional boundary: Between North-West (Derry/Donegal) and the North (Tyrone/Antrim)
• St. Patrick links: Legend says he blessed the river; St. Patrick's Well near Limavady
• Linen industry: 18th–19th century water-powered mills (beetling, scutching)
• Salmon fishery: Historically significant; now catch-and-release conservation

Roe Valley Country Park (Limavady)

• 3 mi riverside woodland; hydroelectric heritage (first in NI, 1896—O'Hagan's Mill)
• Walks: Riverside, O'Cahan's Rock (O'Cahan clan stronghold), sculpture trail
• Visitor centre: linen, salmon, geology exhibits

Ecology & Conservation

• SAC (Special Area of Conservation): Atlantic salmon, otter, brook lamprey
• Water quality: Generally good; agricultural runoff pressures
• Invasive species: Himalayan balsam, Japanese knotweed management

Recreation

• Angling: Salmon, sea trout, brown trout (permits: Loughs Agency)
• Kayaking: Grade II–III sections (experienced only)
• Walking: Ulster Way sections; Roe Valley Way

The Roe: a small river with outsized cultural weight—border, power source, sanctuary, and salmon highway in the heart of Ulster.