- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 54°46'0"N 1°53'54"W
- Eastings/Northings: 406638, 541329
- OS Grid: NZ066413
- Mapcode Local: GBR HF59.TZ
- Mapcode Global: WHB3F.TF6Z
Location and coordinates are for the approximate centre of Tunstall Reservoir within this administrative area.
Geographic features and populated places may cross administrative borders.