Tags: Site Of Special Scientific Interest.
Gweunydd Blaencleddau is a large wetland complex in a shallow south-west valley around the headwaters of the Cleddau and is a Site of Special Scientific Interest (or SSSI) situated in Pembrokeshire South Wales. It has been designated as a Site of Special Scientific Interest since October 2000 in an attempt to protect its fragile biological elements. The site has an area of 150.11 hectares and is managed by Natural Resources Wales.