Porth yr Afon, Isle of Anglesey

• Built-Up Area: Trearddur
• Parish/Community: Trearddur
• Unitary Authority: Isle of Anglesey
• Region: Wales

• Category: Water Feature
• Type: Bay

• Latitude/Longitude: 53°16'49"N 4°37'45"W
• Eastings/Northings: 224810, 379173
• OS Grid: SH248791
• Mapcode Local: GBR GNY1.28W
• Mapcode Global: WH31B.VSTZ

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