Former filter beds on Afon Sawdde below Llyn y Fan Fach Reservoir, including weirs is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 February 2022. Filter beds.

Former filter beds on Afon Sawdde below Llyn y Fan Fach Reservoir, including weirs

WRENN ID
over-lead-nightshade
Grade
II
Local Planning Authority
Brecon Beacons National Park
Country
Wales
Date first listed
16 February 2022
Type
Filter beds
Source
Cadw listing

Also on this page: flood risk · radon risk · detailed attributes ↓

Description

The former filter beds on the Afon Sawdde, located below the Llyn y Fan Fach Reservoir, date back to a time when they were used for water filtration. The Afon Sawdde flows into the filter beds through a shallow stone arch on the southern side. There are two filter beds, featuring concrete side walls on either side of a central channel. On the downstream side, there is a dam wall constructed from quarried rock-faced stone for the outer beds, while the central weir is made of smoother dressed stone.

On the upstream side, there are three weirs made of stone and concrete. Additionally, there is a rubble-stone parapet along the eastern side of the track, which includes openings with slots for stop planks.

More on this building

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Nearby listed buildings

  1. Valve House on former filter beds on Afon Sawdde below Llyn y Fan Fach Reservoir, including weirs Grade II 16 m
  2. Bridge over Nant Melyn Grade II 770 m
  3. Llyn y Fan Fach Reservoir Dam Grade II 1.0 km
  4. Gorsddu Grade II 1.9 km
  5. Blaensawdde Grade II 2.1 km
  6. Barn range at Blaensawdde Grade II 2.1 km
  7. Range of outbuildings at Cwmsawdde Grade II 2.9 km
  8. Cwmsawdde Grade II 3.0 km
  9. Church of St Simon and St Jude Grade II* 3.0 km
  10. Capel Talsarn Grade II 3.9 km