Talybont Reservoir () is the largest stillwater reservoir in the central Brecon Beacons at . Talybont-on-Usk is downstream of the dam. Construction of the current dam started in 1931 by Newport Corporation, and in 1939 the reservoir started supplying Newport with treated water. The reservoir is now owned by Welsh Water. In 2019 a £10 million modernisation took place, including upgrading the pipework inside the dam. References External links Talybont Reservoir and Forest, Brecon Beacons National Park www.geograph.co.uk photos of Talybont reservoir and surrounding area Reservoirs in Powys Dams in Powys Reservoirs in the Brecon Beacons National Park