To provide you with the best experience, cookies are used on this site.  Learn more

Allow cookies
Llyn Brianne

Book Tickets Online

About

Llyn Brianne (grid reference: SN 793 484) is a spectacular reservoir at almost 300m (990ft) above sea level. It holds over 64 million cubic metres of water contained by a 91m (300ft) stone-built dam and is the largest of its kind in Europe.

Llyn Brianne did not exist until the early 1970’s, when the river Tywi (Towy), which rises in the Cambrian mountains just 6 miles above Llyn Brianne, and other waterways were dammed to create Wales’ second-biggest reservoir by water volume, and South Wales’ largest lake.

Activities around Llyn Brianne include bird watching, fishing, stargazing, mountain biking and walking. From the car park and toilets you can walk around the lake and through the NRW forestry on the other side.

Please note that all fishing, boating and swimming in Llyn Brianne reservoir is strictly prohibited

Dark Sky Discovery Site / Stargazing
Llyn Brianne is a stunning location for stargazing and was officially awarded Dark Sky Discovery Site status in October 2019, the first site to receive such an award in the Cambrian Mountains.

With wide open skies and uninterrupted vistas in nearly all directions it’s a perfect location for Astrophotography and spotting shooting stars! Also check out the small car park a little to the South which has fantastic views Northwards of the dam itself.

Book Tickets

Facilities

Parking

  • Free Parking

Target Markets

  • Dark Skies / Stargazing

Map & Directions

Road Directions

There are two car parks at southern corner of reservoir and wo further car parks on eastern edge of reservoir.

The nearest railway station is Llandovery, which is 10 miles away.

Llyn Brianne Reservoir & Dam

Type:Lake

Rhandirmwyn, Llandovery, Carmarthenshire, SA20 0PG

Add Llyn Brianne Reservoir & Dam to your Itinerary

What's Nearby

  1. This delightful reserve is set in the heart of Mid Wales near Ystradffin, Rhandirmwyn.…

    0.93 miles away
  2. Six miles north from Llandovery, this woodland and picnic area is in the peaceful Tywi…

    4.24 miles away
  3. Abergwesyn Commons, on the southern edge of the Mid Wales Cambrian Mountains, is a wild…

    4.54 miles away
  4. The Crychan & Halfway Forest is set in beautiful countryside nestling between the Brecon…

    5.27 miles away
  1. Allt Rhyd y Groes Nature Reserve

    The sessile oak wood at Allt Rhyd y Groes near Llandovery hangs onto the steep north-east…

    6.85 miles away
  2. Cors Caron is a vast wetland near Tregaron. The huge raised peat bogs and surrounding…

    10.75 miles away
  3. Rich with history, wildlife and culture, Strata Florida is the perfect place to visit.…

    11.08 miles away
  4. Strata Florida Abbey or Ystrad Fflur as it is known locally, is on the western edge of…

    11.12 miles away
  5. Coed y Bont is a community woodland situated on the edge of the village of…

    11.61 miles away
  6. Llyn Teifi is the largest of a group of six pools and reservoirs in Mid Wales in the…

    12.02 miles away
  7. The Usk Reservoir is a remote upland 280 acre reservoir surrounded by the Glasfynnedd…

    12.59 miles away
  8. The Elan Valley Estate in Powys, Mid Wales is truly epic and sprawls over 72 square…

    13.05 miles away
  9. Carngafallt is a wonderful place to see birds or simply enjoy the view. The moorland…

    13.06 miles away
  10. The Elan Valley Estate attracts a wide variety of visitors and a good starting point for…

    13.33 miles away
  11. Denmark Farm is located in the heart of rural West Wales. Wildlife is at the heart of…

    13.36 miles away
  12. Talley Woodlands overlook an historic village and ruined abbey in Carmarthenshire, 12…

    14.01 miles away
Previous Next

Don't Miss

Don't Miss

Don't Miss

Don't Miss

Don't Miss