- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 50°34'57"N 4°53'19"W
- Eastings/Northings: 195594, 79865
- OS Grid: SW955798
- Mapcode Local: GBR ZQ.J949
- Mapcode Global: FRA 07NJ.F80
Location and coordinates are for the approximate centre of Markham's Quay within this administrative area.
Geographic features and populated places may cross administrative borders.