- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 60°21'45"N 1°19'19"W
- Eastings/Northings: 437500, 1164500
- OS Grid: HU375645
- Mapcode Local: GBR R12B.YQS
- Mapcode Global: XHD25.6S1M
Location and coordinates are for the approximate centre of Olna Firth within this administrative area.
Geographic features and populated places may cross administrative borders.