Llyn Brianne Reservoir
Built in the early 1970's, Llyn Brianne reservoir feeds the river Towy. The water to supply much of South Wales is extracted farther down stream at Nantgaredig. The massive structure and spill way are very impressive. Even more impressive is the brief video of brave people Kayaking down the spill way, which you can see by clicking the link below.
For Kayaking video click here.