Reservoirs & lochs · North Wales
Llyn Trawsfynydd
In or near Q737888.
Llyn Trawsfynydd — reservoir lake in Gwynedd, Wales.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 1 h–2.5 h
- Nearest railway station
- Campbell's Platform · 5.6 km
- Free entry
- Dog-friendly
Getting there & planning your visit
To visit Llyn Trawsfynydd, the nearest railway station is Campbell's Platform, located 5.6 km away. The postcode for the area is LL41 4UL, which can be used for sat-nav coordinates (latitude 52.9111, longitude -3.9444). Entry to the reservoir is free.
About
Llyn Trawsfynydd is a reservoir in the United Kingdom. Records date its origin to 1928. It covers approximately 5 km². Managed by Magnox Ltd. Wikidata describes it as: "reservoir lake in Gwynedd, Wales". Coordinates: 52.9111°, -3.9444°.
Photo gallery
From the Wikipedia article
Llyn Trawsfynydd is a large artificial reservoir situated near the village of Trawsfynydd in Gwynedd, North Wales. With a total surface area of 4.8 km2 (1,200 acres) the reservoir is slightly more extensive than Wales's largest natural lake, Llyn Tegid (Bala Lake) at 4.5 km2 (1,100 acres).
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
The lake was created between 1924 and 1928 by building four dams in order to supply water for Maentwrog power station. More than twenty properties, some of historical significance, were lost in the creation of the lake but there was little local objection at the time. Included were at least two farms, Brynhir and Llwynderw. Indeed, the power station was regarded as a good thing because it could supply the whole of North Wales' electricity needs. However local landowners and farmers did object to the loss of rights of way across their former lands. In order to avoid long detours round the new lake, a small road was built along the western shore and a footbridge was erected across the…
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 52.9111, -3.9444
- District
- Gwynedd
- Parish
- Trawsfynydd
- Postcode
- LL41 4UL
- Parliamentary constituency
- Dwyfor Meirionnydd
- Established
- 1928
- Nearest railway station
- Campbell's Platform — 5.6 km
Sources
- wikidata: Q2564750 (CC0)
- wikipedia: Llyn Trawsfynydd (CC BY-SA 4.0)
- commons: Llyn Trawsfynydd.JPG (CC BY-SA 4.0)
Other places nearby

Cae Adda
Campsites · 1.1 km

Coed y Rhygen National Nature Reserve
Forests & woodlands · 1.5 km

St Madryn's Church, Trawsfynydd
Historic churches · 1.6 km

Statue of Hedd Wyn
Memorials & monuments · 1.7 km

Trawsfynydd
Historic churches · 1.8 km

Bryn y Gofed
Memorials & monuments · 1.8 km

Craig Gyfynys
Mountains & hills · 1.9 km

Craig y Gwynt
Mountains & hills · 2.1 km

Trawsfynydd quarry
Quarries · 2.1 km

Pont Trawsfynydd
Historic bridges · 2.3 km

Castell Tomen y Mur
Literary houses · 2.4 km

Tomen Y Mur Roman Fort
Archaeological sites · 2.4 km
Nearby
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Coed y Rhygen National Nature Reserve
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St Madryn's Church, Trawsfynydd
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Frequently asked questions
- Where is Llyn Trawsfynydd?
- Llyn Trawsfynydd is in North Wales, United Kingdom (postcode LL41 4UL), in the parish of Trawsfynydd.
- What is Llyn Trawsfynydd?
- Llyn Trawsfynydd — reservoir lake in Gwynedd, Wales.
- How do I get to Llyn Trawsfynydd?
- The nearest railway station is Campbell's Platform, about 5.6 km away. Drivers can use postcode LL41 4UL.
- When was Llyn Trawsfynydd built?
- Built or established in 1928.
- Who runs Llyn Trawsfynydd?
- Llyn Trawsfynydd is operated by Magnox Ltd.
- Is Llyn Trawsfynydd free to visit?
- Yes, Llyn Trawsfynydd is free to enter.
- How do I get to Llyn Trawsfynydd?
- The nearest railway station is Campbell's Platform, about 5.6 km away. Drivers can navigate to postcode LL41 4UL.