River Dee, Wales

The River Dee (Welsh: Afon Dyfrdwy, Latin: Deva Fluvius) is a 70-mile (110 km) long river in the United Kingdom. It travels through Wales and England and also forms part of the border between the two countries. The river rises in Snowdonia, Wales, flows east via Chester, England, and discharges to the sea into an estuary between Wales and the Wirral Peninsula in England. The total catchment area of the River Dee up to Chester Weir is 1,816.8 square kilometres (701.5 sq mi). The average rainfall over the catchment is estimated to be 640 millimetres (25 in) yielding an average flow of 37 m³/s. The larger reservoirs in the catchment are: The River Dee has its source on the slopes of Dduallt above Llanuwchllyn in the mountains of Snowdonia...