Ystradfellte reservoir is an isolated reservoir situated within the Fforest Fawr Geopark in the Brecon Beacons.
At the southern end is a dam, feeding into Afon Dringath. The reservoir measuring approx 1200m x 275m was built between 1907 and 1914 by Neath Rural District Council.
Photographed during aerial reconnaissance by RCAHMW on 6th Feb 2009.
L. Osborne, 18th Feb 2011.