The Elan Valley dams
The location of
|Dam and viaduct
The Careg-Ddu dam in the lower Elan Valley serves a dual role. It is a low, completely submerged dam which plays a vitial role in maintaining a constant supply of water to Birmingham. It also supports masonry pillars carrying the access roadway to the neighbouring valley of the River Claerwen. The image on the right is from a glass slide of 1901 which, though of poor quality, shows the way in which dam and viaduct are combined in a single structure.
The original road leading to this valley was to be lost, along with many original buildings, with the completion of the Caban Coch dam and the subsequent flooding of the two valleys.
lower Elan Valley at the early stages of construction of the
Careg-Ddu dam and viaduct.(left)
Cwm Elan house is just visible in the trees at centre left. Trackbeds of the railway lines used for carrying materials can be seen at different levels.
kind permission of
|The view above of the lower Elan Valley before the creation of the new Caban Coch reservoir is matched closely by the picture (right) of the same scene after the completion of the new dam and viaduct. During the later stages of the dams scheme the viaduct temporarily carried a railway track.|
The new Baptist church built by Birmingham Corporation is
in the foreground in the photograph above. This was to make good
the loss of the original church of
Nantgwyllt which lay lower down the valley towards Caban Coch.
The famous diva of the day, Madam Patti of Craig-y-Nos,
was to sing at the opening of the new church.
There are 2 pages on the Careg-Ddu dam.