| Name | Location | County | Country | Power source | Type | Function | River |
| Waterwheels, Pen-yr-orsedd Quarry, Nantlle | Pen-yr-orsedd Quarry, Nantlle | Caernarfonshire | United Kingdom | Water | Watermill | Quarry mill/wheel |
| Name | Location | County | Country | Power source | Type | Function | River |
| Waterwheels, Pen-yr-orsedd Quarry, Nantlle | Pen-yr-orsedd Quarry, Nantlle | Caernarfonshire | United Kingdom | Water | Watermill | Quarry mill/wheel |