- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°48'52"N 0°39'52"W
- Eastings/Northings: 492163, 213732
- OS Grid: SP921137
- Mapcode Local: GBR F4G.0V9
- Mapcode Global: VHFRP.FNL9
Location and coordinates are for the approximate centre of Marsworth Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.