River Dee Afon Dyfrdwy  (Welsh)
River Dee at Llangollen
Map of the route of the River Dee in Wales and England
Location
Country	Wales, England
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) is a river in the United Kingdom. It flows through parts of Wales and England.

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