Latitude: 51.8279 / 51°49'40"N
Longitude: -3.4576 / 3°27'27"W
OS Eastings: 299647
OS Northings: 215371
OS Grid: SN996153
Mapcode National: GBR YL.W2YR
Mapcode Global: VH6CJ.0BY2
Plus Code: 9C3RRGHR+5X
Map layers use either open data or maps from the Ordnance Survey and Maptiler APIs.
Historic map layers are currently experimental and may not necessarily be available all the time.
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NLS (Historic)
Entry Name: Cantref Reservoir dam, including valve house, draw-off tower and spillway (partly in Llanfrynach)
Listing Date: 6 August 2002
Last Amended: 29 July 2009
Grade: II
Source: Cadw
Source ID: 26829
Building Class: Water Supply and Drainage
ID on this website: 300026829
Location: On the W side of the A470 Merthyr Tydfil to Brecon road approximately 10km NNW of Merthyr Tydfil.
County: Rhondda Cynon Taff
Community: Hirwaun
Community: Hirwaun
Locality: Nant Ddu
Traditional County: Brecknockshire