- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 50°15'41"N 5°0'39"W
- Eastings/Northings: 185500, 44500
- OS Grid: SW855445
- Mapcode Local: GBR ZJ.KLYY
- Mapcode Global: FRA 08DB.MP7
Location and coordinates are for the approximate centre of Tresillian River within this administrative area.
Geographic features and populated places may cross administrative borders.