Nantgwyn Reservoir, Powys

• Parish/Community: Erwood
• Unitary Authority: Powys
• Region: Wales

• Category: Water Feature
• Type: Inland Water

• Latitude/Longitude: 52°6'7"N 3°25'18"W
• Eastings/Northings: 302710, 245808
• OS Grid: SO027458
• Mapcode Local: GBR YM.9RW4
• Mapcode Global: VH6B5.MFWG

Location and coordinates are for the approximate centre of Nantgwyn Reservoir within this administrative area. Geographic features and populated places may cross administrative borders.