North Portal to the Tavistock Canal Tunnel at NGR 460 723

NORTH PORTAL TO THE TAVISTOCK CANAL TUNNEL AT NGR 460 723

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Overview

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1105729
Date first listed:
23-Jan-1987
List Entry Name:
North Portal to the Tavistock Canal Tunnel at NGR 460 723
Statutory Address:
NORTH PORTAL TO THE TAVISTOCK CANAL TUNNEL AT NGR 460 723

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Location

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Official list entry

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1105729
Date first listed:
23-Jan-1987
List Entry Name:
North Portal to the Tavistock Canal Tunnel at NGR 460 723
Statutory Address 1:
NORTH PORTAL TO THE TAVISTOCK CANAL TUNNEL AT NGR 460 723

The scope of legal protection for listed buildings

This List entry helps identify the building designated at this address for its special architectural or historic interest.

Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.

For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.

Understanding list entries

Corrections and minor amendments

The scope of legal protection for listed buildings

This List entry helps identify the building designated at this address for its special architectural or historic interest.

Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.

For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.

Understanding list entries

Corrections and minor amendments

Location

Statutory Address:
NORTH PORTAL TO THE TAVISTOCK CANAL TUNNEL AT NGR 460 723

The building or site itself may lie within the boundary of more than one authority.

County:
Devon
District:
West Devon (District Authority)
Parish:
Gulworthy
National Grid Reference:
SX4611772308

Details

TAVISTOCK HAMLETS
SX 47 SE
6/9
North portal to the
tavistock Canal tunnel at
NGR 460 723

GV II

North portal to the Tavistock Canal tunnel. Dated 1803. The Tavistock Canal was built
1803-17 by John Taylor. Slatestone rubble will limestone datestone. The Tavistock
Canal connected the Tavy to the Tamar over a distance of 4½ miles. For nearly 2 miles
it runs in a tunnel under Morwell Down. The north portal has a lock to one side to
regulate the water flow.
The portal is cut into the rock face, and has a round arch with voussoirs and keystone,
with large datestone over. The rubble walling rises about 3 metres above the archway,
with coping. The south portal at Morwellham (q.v.) is of the same design.
(Sources: Booker, F.: Industrial Archaeology of the Tamar Valley. Hedges, C,: The
Tavistock Canal. 1975)


Listing NGR: SX4611772308

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number:
94016
Legacy System:
LBS

Sources

Books and journals
Booker, F, Industrial Archaeology of the Tamar Valley, (1967)
Hedges, C, The Tavistock Canal, (1975)

Legal

This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.

Ordnance survey map of North Portal to the Tavistock Canal Tunnel at NGR 460 723

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 19-Jun-2026 at 05:30:10.

Download a full scale map (PDF)
© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

End of official list entry

All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.

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