- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 50°31'37"N 5°1'31"W
- Eastings/Northings: 185677, 74087
- OS Grid: SW856740
- Mapcode Local: GBR ZG.PWQG
- Mapcode Global: FRA 07CN.VCR
Location and coordinates are for the approximate centre of Treyarnon Bay within this administrative area.
Geographic features and populated places may cross administrative borders.