Reservoirs & lochs · North Wales
Llyn Cwm Ystradllyn
In or near Tremadog.
Llyn Cwm Ystradllyn — 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
- Nantmor Halt · 4.0 km
- Free entry
- Dog-friendly
About
Llyn Cwm Ystradllyn is a reservoir in the United Kingdom. It covers approximately 98 km². Managed by Dŵr Cymru Welsh Water. Wikidata describes it as: "lake in Gwynedd, Wales". Coordinates: 52.9779°, -4.1437°.
Photo gallery
Place summary
Llyn Cwm Ystradllyn is a reservoir located in North Wales, operated by Dŵr Cymru Welsh Water. This body of water serves as a vital resource for the region, contributing to local water supply and management.
AI-generated from the structured facts on this page (operator, designation, listing, era). Not a substitute for visiting.
- Coordinates
- 52.9779, -4.1437
- District
- Gwynedd
- Parish
- Dolbenmaen
- Postcode
- LL51 9AZ
- Parliamentary constituency
- Dwyfor Meirionnydd
- Nearest railway station
- Nantmor Halt — 4 km
Sources
- wikidata: Q13129752 (CC0)
- commons: Llyn Cwm Ystradllyn - geograph.org.uk - 46583.jpg (CC BY-SA 4.0)
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Braich Y Cornel
Mountains & hills · 1.2 km

Mynydd Gorllwyn
Mountains & hills · 1.2 km

Ffridd Bach
Mountains & hills · 1.3 km

Moel Ddu
Mountains & hills · 1.8 km

Moel-ddu
Mountains & hills · 1.8 km

Bryn Banog
Mountains & hills · 1.9 km

Mynydd Oerddwr
Mountains & hills · 2.3 km

Moel Isallt
Mountains & hills · 2.4 km

Moel Isallt
Mountains & hills · 2.4 km

Moel Lefn
Natural landmarks · 2.5 km
Nearby
Vineyards · North Wales
Treforys
Treforys — a UK vineyard in wales north, producing English or Welsh wine from cool-climate grape varieties.
Museums · North Wales
Gorseddau and Prince of Wales Slate Quarries, Railways and Mill
Gorseddau and Prince of Wales Slate Quarries, Railways and Mill — part of the World Heritage site “The Slate Landscape of Northwest Wales” in the United Kingdom.
Mountains & hills · North Wales
Braich Y Cornel
Braich Y Cornel — mountain in wales north. Elevation: 383 m.
📷 5Mountains & hills · North Wales
Mynydd Gorllwyn
Mynydd Gorllwyn — mountain in wales north. Elevation: 397 m.
Mountains & hills · North Wales
Ffridd Bach
Ffridd Bach — a mountain in wales-north, United Kingdom, 534 m.
Where to eat & stay near Llyn Cwm Ystradllyn
Places to stay
Campsites · North Wales
Ty’n Llan Campsite
Ty’n Llan Campsite — a campsite in wales north.
Hotels · North Wales
Royal Sportsman Hotel
Royal Sportsman Hotel — a hotel in wales north.
Campsites · North Wales
Cae Du Campsite
Cae Du Campsite — a campsite in wales north.
Caravan parks · North Wales
Tyddyn Llwyn Caravan Park
Tyddyn Llwyn Caravan Park — a caravan park in wales north.
Caravan parks · North Wales
Eisteddfa Caravan and Camping Site
Eisteddfa Caravan and Camping Site — a caravan park in wales north.
Places to eat & drink
Restaurants · North Wales
Dylan's Restaurant
Dylan's Restaurant — a restaurant in wales north. Cuisine: burger;cake;coffee shop;fish;italian;italian pizza;pasta;pizza;seafood.
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Reservoirs & lochs · North Wales
Dolwen Reservoir
Dolwen Reservoir — reservoir in Conwy County Borough, Wales, UK.
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Ffynnon Llugwy
Ffynnon Llugwy — lake in the Carneddau range of mountains in Snowdonia, North Wales.
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Llyn Crafnant
Llyn Crafnant — lake in Conwy County Borough, Wales.
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Llyn Trawsfynydd
Llyn Trawsfynydd — reservoir lake in Gwynedd, Wales.
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Coedty Reservoir
Coedty Reservoir — reservoir in the United Kingdom.
📷 3Frequently asked questions
- Where is Llyn Cwm Ystradllyn?
- Llyn Cwm Ystradllyn is in North Wales, United Kingdom (postcode LL51 9AZ), in the parish of Dolbenmaen.
- What is Llyn Cwm Ystradllyn?
- Llyn Cwm Ystradllyn — lake in Gwynedd, Wales.
- How do I get to Llyn Cwm Ystradllyn?
- The nearest railway station is Nantmor Halt, about 4.0 km away. Drivers can use postcode LL51 9AZ.
- Who runs Llyn Cwm Ystradllyn?
- Llyn Cwm Ystradllyn is operated by Dŵr Cymru Welsh Water.
- Is Llyn Cwm Ystradllyn free to visit?
- Yes, Llyn Cwm Ystradllyn is free to enter.
- How do I get to Llyn Cwm Ystradllyn?
- The nearest railway station is Nantmor Halt, about 4.0 km away. Drivers can navigate to postcode LL51 9AZ.