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

Description

Afon Sawdde flows into the filter beds on the upstream (S) side through a shallow stone arch. There are 2 filter beds, with concrete side walls, either side of a central channel. On the downstream side is a dam wall of quarried rock-faced stone to the outer beds, and smoother dressed stone to the central weir.

On the upstream side there are 3 weirs of stone and concrete, and a rubble-stone parapet alongside the track on the E side, which has openings with slots for stop planks.

Detailed Attributes

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