Reservoirs & lochs · North Wales
Llyn Brenig
Llyn Brenig — reservoir in the United Kingdom.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 1 h–2.5 h
- Free entry
- Dog-friendly
About
Llyn Brenig is a reservoir in the United Kingdom. Managed by Dŵr Cymru Welsh Water. Wikidata describes it as: "reservoir in the United Kingdom". Coordinates: 53.0833°, -3.5333°.
Photo gallery
From the Wikipedia article
Llyn Brenig is a reservoir located on Denbigh Moors in North Wales. The artificial lake, which was constructed between 1973 and 1976, was created by building an embankment dam across the Brenig valley. It lies at 1,200 ft (370 m) above sea level on the border between the counties of Conwy and Denbighshire. It is used to manage the flow in the River Dee as part of the River Dee regulation system. The reservoir's purpose is to protect the water supply for North West England and north-east Wales, particularly Liverpool and its surrounding area. Its surface area of 920 acres (3.7 km2) makes it the fourth largest lake in Wales, behind Llyn Tegid (Bala Lake), Llyn Trawsfynydd and Lake Vyrnwy.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
Construction began in 1973 and was completed in 1976. An earthen bank with stone, which is up to 45 m at its highest point, dammed Afon Brenig near the village of Pentre-Llyn-Cymmer, Cerrigydrudion. The northern half of the reservoir is in community of Nantglyn. Its perimeter is about 9 mi. Brenig, which has a capacity of 60 million m³, was first filled in 1979. Water supply of the catchment into the lake is significantly "over-reservoired", this means the catchment area of Llyn Brenig does not have capacity to refill the reservoir within one annual hydrological cycle. It can take several years for the reservoir to refill again after its water level have been drawn down. Water is only drawn…
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 53.0833, -3.5333
- Address
- Conwy & Denbighshire
Sources
- wikidata: Q3396999 (CC0)
- wikipedia: Llyn Brenig (CC BY-SA 4.0)
- commons: Llyn Brenig - geograph.org.uk - 53137.jpg (CC BY-SA 4.0)
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Stone circles · 1.9 km

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Mountains & hills · 2.0 km

Fforest Link
Mountain bike trails · 2.0 km
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📷 3Frequently asked questions
- Where is Llyn Brenig?
- Llyn Brenig is in North Wales, United Kingdom.
- What is Llyn Brenig?
- Llyn Brenig — reservoir in the United Kingdom.
- How do I get to Llyn Brenig?
- Its coordinates are 53.0833°, -3.5333°.
- Who runs Llyn Brenig?
- Llyn Brenig is operated by Dŵr Cymru Welsh Water.
- Is Llyn Brenig free to visit?
- Yes, Llyn Brenig is free to enter.