Entrance Lock to the Tamar Manure Navigation
ENTRANCE LOCK TO THE TAMAR MANURE NAVIGATION, WEIR HEAD
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1329331
- Date first listed:
- 19-Oct-1987
- List Entry Name:
- Entrance Lock to the Tamar Manure Navigation
- Statutory Address:
- ENTRANCE LOCK TO THE TAMAR MANURE NAVIGATION, WEIR HEAD
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Location
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Images of England Project
- Date:
- 2002-09-21
- Reference:
- IOE01/03409/28
- Rights:
- © Elizabeth Gabriel. Source: Historic England Archive
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Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1329331
- Date first listed:
- 19-Oct-1987
- List Entry Name:
- Entrance Lock to the Tamar Manure Navigation
- Statutory Address 1:
- ENTRANCE LOCK TO THE TAMAR MANURE NAVIGATION, WEIR HEAD
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.
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.
Location
- Statutory Address:
- ENTRANCE LOCK TO THE TAMAR MANURE NAVIGATION, WEIR HEAD
The building or site itself may lie within the boundary of more than one authority.
- District:
- Cornwall (Unitary Authority)
- Parish:
- Calstock
- National Grid Reference:
- SX4350570843
Details
CALSTOCK WEIR HEAD
SX 4271-4371
7/145 Entrance Lock to the Tamar Manure
Navigation
GV II
Entrance lock at the southern entrance to the Tamar Manure Navigation; remains of
entrance lock at the northern end. Dated PR 1798, although said to have been built
in 1808. Granite ashlar walls to the lock, with one pair of wooden lock gates with
iron winding gear for the sluices.
Plan: The lock basin is about 25 metres long, with the gated at the southern end ; at
the northern end of the canal, granite ashlar walls remain.
The granite ashlar walls are splayed back at each end of the lock basin ; the lock
gates are partially collapsed. Granite mooring post at south end. Iron winding gear
remaining for sluices. At the northern end of the canal, the granite ashlar walls
remain, no gates.
The canal was built for the Tamar Coal Manure and General Mercantile Company;
diverted and shortened by the Duke of Bedford in early C20. The canal continued to
be used to supply coal to Gunnislake Gas Works until 1914. The Company was
liquidated in 1942. The canal is listed as an Ancient Monument, No. 984.
Sources: Tamar Valley Project. Booker, F.: Industrial Archaeology of the Tamar Valley
1967.
Listing NGR: SX4350570843
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 60893
- Legacy System:
- LBS
Sources
Books and journals
Booker, F, Industrial Archaeology of the Tamar Valley, (1967)
Legal
This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 21-Jun-2026 at 20:56:43.
Download a full scale map (PDF)End of official list entry
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