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Lliw Reservoirs - Upper and Lower

The reservoirs lie within an area of stunning mountain scenery that characterises the Mawr, north of Swansea.

The lower and upper Lliw reservoirs are surrounded by a mosaic of habitats including bracken, scrub broadleaved woodland and the Biodiversity Action Plan priority habitat, lowland acid grassland. Both sites support a wide diversity of flora and fauna, many of which are considered rare. Birds spotted on site include: peregrine, kestrel, raven, wheatear, meadow pipit & skylark, whinchat, red kite, curlew.


  • Sites of Importance for Nature Conservation (SINCs 311 and 317)


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  • Car park at Lower Lliw Reservoir (until 6.00pm daily, charges apply)
  • Public toilets at Lower Lliw Reservoir
  • Picnic site at Lower Lliw Reservoir
  • Café/visitor centre at Lower Lliw Reservoir
  • Pub in Felindre


Wheelchair and pushchair accessible route of 4 miles.

Access information

Near Felindre, Swansea
Grid Reference SN653035 and SN662063 respectively
OS Explorer Map 165 Swansea

Entrance to Lower Lliw Reservoir.


There are recreational footpaths around the reservoirs including a 4 mile route suitable for wheelchairs and pushchairs at Lower Lliw Reservoir. There is a popular walk to Upper Lliw Reservoir which is part of the Gower Way.


There is a car park at Lower Lliw Reservoir. From J46 of M4 travel north towards Felindre and then follow signs to the reservoir. There is no vehicle access for visitors from the Lower to the Upper Reservoir. Traffic is limited to Welsh Water staff, Lliw residents and deliveries.


Nearest bus stop is a request stop at the base of the drive to the Lower Lliw Reservoir which is approximately 1 mile long.


Dŵr Cymru / Welsh Water (opens new window)