Canvas Print of There are four dams in the Elan Valley, and one in the Claerwen Valley. The first one in the Elan Valley is the Caban Coch Dam. Photographed after torrential rain with white water cascading over the dam. This really is an exciting place to be after heavy rain. Every corner and bend at Elan shows a new view along the valley. The Elan Valley is very popular with visitors for simply a good day out or a walk.