Cefni Reservoir, Isle of Anglesey

• Parish/Community: Llanddyfnan
• Unitary Authority: Isle of Anglesey
• Region: Wales

• Category: Water Feature
• Type: Inland Water

• Latitude/Longitude: 53°16'14"N 4°20'16"W
• Eastings/Northings: 244197, 377396
• OS Grid: SH441773
• Mapcode Local: GBR HNN1.XCW
• Mapcode Global: WH42T.B2M0

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