found: Work cat.: Gibbs, D.J. Monitoring invertebrate features on SSSI: Donacia bicolora at Llangorse Lake, Breconshire, 2008
found: Wikipedia, 11 Aug. 2008(Llangorse Lake (Welsh: Llyn Syfaddon; variant: Llyn Syfaddan); the largest natural lake in south Wales, situated within the Brecon Beacons National Park, near to the town of Brecon and the village of Llangors)
found: Collins Britain atlas and gaz., 1999(Llangorse Lake (Llyn Syfaddan), Powys; large lake, 4m/6km in circumference, to S of Llangorse)
