Embanked Aqueduct carrying Monmouthshire and Brecon Canal over Afon Crawnon is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 28 August 1998. Aqueduct. 1 related planning application.
Embanked Aqueduct carrying Monmouthshire and Brecon Canal over Afon Crawnon
- WRENN ID
- tired-lead-moth
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 28 August 1998
- Type
- Aqueduct
- Address
- Embanked Aqueduct carrying Monmouthshire and Brecon Canal over Afon Crawnon, Cwm Crawnon, Llangynidr, Powys, NP8 1ND
- OS grid reference
- SO 144 197
- Coordinates
- 51.86996, -3.24397
- Source
- Cadw listing
Description
This is an early 18th-century aqueduct, carrying the Monmouthshire and Brecon Canal over the Afon Crawnon. The aqueduct is constructed of rubble sandstone, featuring a single round arch. The abutments at either end are splayed outwards. A plain stone parapet sits on the north (towpath) side. An outflow channel from the canal is inserted above the arch on the south side.
Local climate
Embanked Aqueduct carrying Monmouthshire and Brecon Canal over Afon Crawnon sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 2002
- Related listed building consents — 1 application
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
- 1 Embanked Aqueduct over Ochram Brook
- 2 Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal, partly in Cwmbran Central Community
- 3 Embanked aqueduct over road to W of Parish Church (including attached flights of steps &road tunnel)
- 4 Embanked Aqueduct SW of Govilon ( including Wall & Gate-piers to W )
- 5 Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community)
this building 1 similar nearby listed buildings
Nearby listed buildings
- Lock No 65
- Limekiln at Monmouthshire and Brecon Canal Sanitary Station
- Coombes Lock Bridge (Canal Bridge No 134)
- Lower Lock Bridge (Canal Bridge No 132), including Lock No 64
- Lock No 66
- Lock No 67
- Lock No 68
- Tofs Lock Bridge (Canal Bridge No 135)
- Bank of Limekilns beside Monmouthshire and Brecon Canal east of Bridge No 131
- Mowfield Cottage