Travelers are voting Usk Reservoir, Cray Reservoir and Ystradfellte Reservoir as the best of 3 dams near Swansea. There are 1 dam near Cardiff a city just 70 km from Swansea and 2 dams near Newport which is 83 km distant. The most popular of these are Llwyn-on Reservoir near Cardiff and Talybont Reservoir in Newport. You can find 21 Dam in the country of United Kingdom and Thirlmere Aqueduct is our members favorite Dam in all of United Kingdom. Want more? Check out our map of dams near Swansea.