Llyn Eiddew-mawr, Gwynedd

• Parish/Community: Talsarnau
• Unitary Authority: Gwynedd
• Region: Wales

• Category: Water Feature
• Type: Inland Water

• Latitude/Longitude: 52°53'5"N 4°0'50"W
• Eastings/Northings: 264578, 333850
• OS Grid: SH645338
• Mapcode Local: GBR 5V.Q9DM
• Mapcode Global: WH55V.9RS5

Location and coordinates are for the approximate centre of Llyn Eiddew-mawr within this administrative area. Geographic features and populated places may cross administrative borders.