River Dee, Wales

River Dee
River Dee at Llangollen
Map of the route of the River Dee in Wales and England
Native name	Afon Dyfrdwy (Welsh)
Location
Country	England and Wales
Cities	Chester
Physical characteristics
Source
• location	slopes of Dduallt above Llanuwchllyn, Snowdonia, Wales
• coordinates	52°49′56″N 3°45′56″W / 52.8322°N 3.7656°W / 52.8322; -3.7656
• elevation	450 m (1,480 ft)
Mouth	Dee Estuary
• coordinates	53°21′14″N 3°13′33″W / 53.3539°N 3.2258°W / 53.3539; -3.2258
• elevation	0 m (0 ft)
Length	113 km (70 mi)
Basin size	1,816.8 km2 (701.5 sq mi)
Discharge
• location	Chester Weir
• average	29.71 m3/s (1,049 cu ft/s)
Discharge
• location	Manley Hall
• average	31.03 m3/s (1,096 cu ft/s)
Discharge
• location	Bala Lake
• average	13.06 m3/s (461 cu ft/s)
Basin features
Tributaries
• left	Tryweryn, Alwen, Clywedog, Alyn
• right	Ceiriog, Wych Brook

The River Dee (Welsh: Afon Dyfrdwy, Latin: Deva Fluvius) flows through North Wales and Cheshire, England. The majority of the river is located in Wales, with the stretch between Aldford and Saltney within England and two other sections forming the border between the two countries.^[1] The length of the section from Bala to Chester is 113 km (70 miles).

The river rises on Dduallt in Snowdonia and flows east through Bala Lake, Corwen, and Llangollen. It turns north near Overton-on-Dee and forms part of the England–Wales border before fully entering England near Aldford, north-east of Wrexham. It flows through Chester then re-enters Wales near Saltney; the final section is canalised and discharges to the Irish Sea via an estuary 23 km (14 miles) long.