- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 55°55'9"N 6°11'13"W
- Eastings/Northings: 138500, 677500
- OS Grid: NR385775
- Mapcode Local: GBR CF32.8VN
- Mapcode Global: WGYG8.XHZ1
Location and coordinates are for the approximate centre of Allt M within this administrative area.
Geographic features and populated places may cross administrative borders.