Environmental Engineering Reference
In-Depth Information
PenclacwyddwheretheWildfowlandWetlandsTrusthavetheironlyWelshcentre.Asearlyas1850over
730 hectares had been destroyed ('reclaimed') by industrial development. The only substantial area to be
enclosed on the south side is Cwm Ivy Marsh, an area adjacent to Whiteford Burrows, which was separ-
ated from the tidal marshes in 1638 by the building of an earthen sea wall, subsequently given additional
protection by a drystone facing. The salt gradually leached away and the resulting freshwater marsh was
divided up and fenced. Cwm Ivy is now considerably lower than the salt marsh outside the enclosing sea
wall. In 1974 the sea overtopped the wall and to prevent a repeat the boundaries were subsequently in-
creased in height.
