Rhyl, United Kingdom
Alwen Reservoir or Cronfa Alwen is a 5km long reservoir near Pentre-Llyn-Cymmer in the county borough of Conwy, North Wales, UK held back by the 27 metre high Alwen Dam.
The reservoir and dam were constructed between 1909 and 1921, the dam is a gravity-arch masonry dam.
May 19th, 2012
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