| Name | Location | County | Country | Power source | Type | Function | River |
| Factory Isaf, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |
| Fron-Goch Factory, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |
| Pandy Gadair, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |
| Pandy Stukeley, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |
| Upper Neint Factory, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |
| Wenallt Factory, Dolgellau | Dolgellau | Merionethshire | United Kingdom | Water | Watermill | Woollen mill | Aran/Arran |