Llyn Idwal. 07/11/91; Wales; 14 ha; 53°07'N 004°01'W. National Park, Nature Reserve, SSSI. A small nutrient-poor mountain valley lake with an unusually species-rich plant community, including almost all of the species typical of nutrient-poor waters in Britain. Numerous species are nationally scarce or vulnerable at a European level. The semi-circular rock basin (cwm) containing the lake is one of the finest examples in the area. Ramsar site no. 534. Most recent RIS information: 2005.

Wales