Open Water Conduits in Church Street and Penrose Road is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 22 May 1972. Water conduits.
Open Water Conduits in Church Street and Penrose Road
- WRENN ID
- grim-garret-sage
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- St Ives MP: Andrew George (LD)
- Country
- England
- Date first listed
- 22 May 1972
- Type
- Water conduits
- OS grid reference
- SW 659 275
- Coordinates
- 50.10216, -5.27487
- Source
- Historic England listing
Description
The Open Water Conduits in Church Street and Penrose Road are a Grade II listed structure. They feature dressed and plain granite revetments and bridges set at pavement level, with a channel base made of cut granite, shale, or cobbles, and iron grates.
This extensive system is designed around the town's topography, drawing water from the diverted River Cober located about 2 kilometers to the north and returning it to the river to the south of the town. Most of the system is underground, with the channels only exposed along the main roads in the town center.
In Church Street, water flows downhill from both the north and south, converging at the bottom near No. 13 Church Street, where it is diverted underground. To the north, the channel runs alongside the retaining wall of the churchyard of St Michael (listed Grade II*) on the west side, then shifts to the east side of the road south of the church, flowing down a conduit that features several bridges providing access to nearby buildings. At No. 35 Church Street (listed Grade II), the conduit runs beneath a pavement that extends the length of the house before continuing downhill.
At the top of the hill to the south, the water flows beneath the tooled paving and steps outside the Market Hall (listed Grade II) and the Guildhall (listed Grade II*), emerging at the junction with Penrose Road. It then flows down a conduit on the east side of Penrose Road, which is spanned by several pedestrian bridges and steps.
The section of conduits along Penrose Road follows the road downhill from the west, along the south side, briefly going underground at the corner. The main stretch of the channel is bordered by garden walls on the south and is also crossed by several bridges and steps that provide access to adjacent houses.
Local climate
Open Water Conduits in Church Street and Penrose Road receives an average of 870 mm of rain a year. This makes it wetter than 63% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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.
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