Lluest-wen Reservoir

Lluest-wen Reservoir (Cronfa-ddwr Lluest-wen) is a reservoir at the top of the Rhondda Fach Valley (Cwm Rhondda Fach), in the borough of Rhondda Cynon Taf, South Wales. Parts of it fall within the communities of Rhigos, Aberdare and Treherbert. A recreational walking route, the Coed Morgannwg Way, and route 47 of the National Cycle Network run northeast and southwest of it respectively. The reservoir gained national attention in 1969 when significant damage was discovered that led to the evacuation of hundreds of nearby homes and prompted more than £1 million of emergency repair works.

Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).