- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°58'53"N 3°58'29"W
- Eastings/Northings: 267500, 344500
- OS Grid: SH675445
- Mapcode Local: GBR 5X.J6WH
- Mapcode Global: WH55G.XBB6
Location and coordinates are for the approximate centre of Tanygrisiau Resr within this administrative area.
Geographic features and populated places may cross administrative borders.