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All closures / What fails / Lock / Cill
Cill
Too few unplanned closures of this kind in June to August 2026 and the same months a year earlier to tell a change from luck: 4 against 1. How this is tested.
- On record
- 17 closures since May 2025
In force today
No closure of this kind is in force today.
By canal
10 canals have had a closure of this kind. A closure naming two canals counts on both.
| Canal | Closures |
|---|---|
| Huddersfield Narrow Canal | 4 |
| Leeds & Liverpool Canal | 3 |
| Aire & Calder Navigation Main Line | 2 |
| Grand Union Canal | 2 |
| Ashton Canal | 1 |
| Lee Navigation | 1 |
| Oxford Canal | 1 |
| Rochdale Canal | 1 |
| Staffordshire & Worcestershire Cnl | 1 |
| Stourbridge Canal | 1 |
Every closure on record
Showing 17 closures involving a lock cill.
Rank by
Population
4 closures are in neither group: 4 unplanned with no day in the cruising season since May 2025.
Status
Duration
Cause
Asset affected
Lock part
Unplanned lock failures naming a part
CRT reason
Region
What these figures mean
- Population
- Which closures a figure counts. All closures is everything; Unplanned closure drops the works CRT flags as its winter programme and any day outside the cruising season (the Friday nearest 15 March to the Sunday before the first Monday in November). Scheduled work CRT does not flag as winter works still counts here. CRT Planned closure is the flagged winter programme alone.
- Defensible duration
- The days between a closure's start and its reopening date, counted only where the dates allow it. A cancelled notice, or one whose reopening precedes its start, has no defensible duration and is in no total.
- Closure-days
- One day on which one closure was in force. Two closures on the same day are two closure-days; where the question is how long a canal was actually disrupted, overlapping notices are unioned into single intervals. They are counted from 1 May 2025, when this archive begins: a closure that started earlier adds only its days since then, though its own row shows its whole length. Every figure and chart counts only the days inside the Period chosen above them.
- In force
- A closure is in a Period, and a day is one a closure affected, if it was in force at any time that day, including the morning it reopened. Closure-days measure how long, so they count whole days and not the reopening day: a closure can be in a Period and add no closure-day to it.
Closures in force each month
closures active during the monthCanals ranked by the season's closures
share of the period's cruising-season days up to today — a closure somewhere on a long canal is likelier, and does not mean the canal was impassableclosures in force on the period's cruising-season days — a longer canal has more to go wrong onWhere
closure-days by regionclosures by regionA region with more canal has more to go wrong on, so these totals partly measure its size. Regions compared by length of canal are on the Reliability page.
What causes them
closure-days by causeclosures by causeCRT's reason
closure-days by the reason CRT filedclosures by the reason CRT filedHow long they last
closures by full length, including any days before May 2025 — the bands are not equal in widthClosures
Advice - Grand Union Canal, Clitheroe's Lock, Lock 99, Brentford
Grand Union CanalLondon and South East
70 days
Fully shut 70 of CRT's 71 days
From 27 May 2025
Reopened 6 August 2025
- Where
- Lock 99, Clitheroes Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Clitheroe's lock remains closed while essential repair work continues. We would like to inform you that concrete is currently being poured as part of the ongoing cill repair works. The concrete will require at least three full days to cure properly. On Monday, 4th of August, we…
Latest of 13 CRT updates, 1 August 2025.
Bottom Barge Lock, Stourport Basin
Staffordshire & Worcestershire CnlWest Midlands
42 days
From 10 July 2026
Reopened 21 August 2026
- Where
- Bottom Barge Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Please be advised that the planned works at Bottom Barge Lock, Stourport Basin, have now been successfully completed. Our teams are currently demobilising the site and removing equipment from the area. The lock will be fully reopened and available for navigation from 16:00…
Latest of 8 CRT updates, 20 August 2026.
Lock 65 to Lock 85, Wigan Flight
Leeds & Liverpool CanalNorth West
22 days
From 20 August 2026
Reopened 11 September 2026
- Where
- Lock 85, Lock 21 to Lock 65, Top Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation remains closed between Lock 65 and Lock 85 on the Wigan Flight of the Leeds & Liverpool Canal. Our team are looking to start the repairs to the detached head cill at Lock 69 week commencing Monday 7 September. Repairs are expected to take one week. A further update…
Latest of 3 CRT updates, 1 September 2026.
Lock 59 To Lock 64
Leeds & Liverpool CanalNorth West
16 days
From 11 May 2026
Reopened 27 May 2026
- Where
- Lock 64, Bottom Lock to Lock 59, Lock 2
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Due to other priority works our reactive team where delayed carrying out the repairs to Lock 60 on the Leeds & Liverpool Canal. The reactive team are currently now on site repairing the damaged tail gate cill. As a result navigation remains closed between Lock 59 and Lock 64…
Latest of 2 CRT updates, 20 May 2026.
Between Lock 1 and Lock 18
Ashton CanalNorth West
14 days
From 16 April 2026
Reopened 30 April 2026
- Where
- Lock 18 to Lock 1
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation remains closed between Locks 1 and 18 on the Ashton Canal due to the cill on the tail gates at Lock 10 becoming dislodged. Repairs were initially scheduled to take place, but have been delayed while the team sourced the necessary water pumps to carry out the work. A…
Latest of 4 CRT updates, 29 April 2026.
Lock 26w
Huddersfield Narrow CanalNorth West
14 days
From 1 May 2026
Reopened 15 May 2026
- Where
- Lock 26 West
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation remains closed due to a damaged cill at Lock 26W on the Huddersfield Narrow Canal. This damage is preventing the lock from sealing, resulting in the lock being filled and operated safely. The local team have experienced delays in sourcing the necessary parts to carry…
Latest of 2 CRT updates, 5 May 2026.
Lock 29W
Huddersfield Narrow CanalNorth West
10 days
From 5 May 2026
Reopened 15 May 2026
- Where
- Lock 32 West to Lock 24 West
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation is currently closed at Lock 29W on the Huddersfield Narrow Canal, due to a damaged cill which is preventing the lock being operated safely. Our specialist team are planning to attend site to carry out the emergency repairs. An update will be provided on or before…
CRT's only update, 5 May 2026.
Lock 81, Butler Street To Lock 83, Brownsfield
Rochdale CanalNorth West
8 days
From 5 March 2026
Reopened 13 March 2026
- Where
- Lock 81 Butler Street to Lock 83 Brownsfield
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation remains closed between Lock 81 and Lock 83 on the Rochdale Canal due to a loose cill at Lock 82. Our local team attended site today to carry out an investigation and are now developing a repair plan for the cill. A further update will be provided on or before Friday…
Latest of 2 CRT updates, 9 March 2026.
Lock 15, Stourbridge
Stourbridge CanalWest Midlands
4 days
From 17 July 2025
Reopened 21 July 2025
- Where
- Lock 15, Stourbridge
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Our team will be carrying out further works to the cill over the weekend. Subject to satisfactory concrete curing times, we are aiming to reopen the navigation on Monday or Tuesday. We will provide a further update as soon as we are able to confirm a reopening date and time.…
Latest of 3 CRT updates, 18 July 2025.
Woodlesford Lock
Aire & Calder Navigation Main LineYorkshire and North East
4 days
From 5 January 2026
Reopened 9 January 2026
- Where
- Lock 5, Woodlesford Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Please be aware that Woodlesford Lock will be closed for five days to allow divers to inspect and repair the damaged sill.
CRT's only update, 23 December 2025.
Fishpond Lock
Aire & Calder Navigation Main LineYorkshire and North East
4 days
From 5 January 2026
Reopened 9 January 2026
- Where
- Lock 4, Fishpond Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Please note, the completion time for works at Fishpond Lock has been revised to 17:00 on Friday 9th January.
Latest of 2 CRT updates, 23 December 2025.
Between Lock 24W and Lock 32W
Huddersfield Narrow CanalNorth West
4 days
From 17 April 2026
Reopened 21 April 2026
- Where
- Lock 32 West to Lock 24 West
- CRT reason
- Low Water Levels
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation remains closed due to low water levels between Lock 24W and Lock 32W on the Huddersfield Narrow Canal. Following further investigation, damage was found to the lock cill at Lock 29W, which is preventing the lock from sealing properly and being filled. The team will be…
Latest of 2 CRT updates, 20 April 2026.
Navigation Closure, Hardmead Lock - Lock 3
Lee NavigationLondon and South East
3 days
From 19 December 2025
Reopened 22 December 2025
- Where
- Lock 3, Hardmead Lock
- CRT reason
- Underwater Obstruction
- Cause
- Cause not stated
- Asset
- Lock
Due to an obstruction on the cill we've closed Hardmead Lock till our team can resolve the issue.
CRT's only update, 19 December 2025.
Between Lock 24 W and Lock 32W
Huddersfield Narrow CanalNorth West
3 days
From 17 March 2026
Reopened 20 March 2026
- Where
- Lock 32 West to Lock 24 West
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation is currently closed between Lock 24W and 32W on the Huddersfield Narrow Canal, due to a damaged cill at Lock 29W which is preventing the lock being operated safely. Our local team are planning a method of repair. An update will be provided on or before, Friday 20…
CRT's only update, 17 March 2026.
Soulbury Three Locks, near Stoke Hammond, Buckinghamshire
Grand Union CanalLondon and South East
1 day
Fully shut 1 of CRT's 7 days
From 15 April 2026
Reopened 22 April 2026
- Where
- Lock 24, Three Locks bottom to Lock 26, Three Locks top
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Please note there has been an amendment to the assisted passage time for Wednesday 22nd April. The new timeslot is as follows: Wednesday 22nd April 09:00 - 14:00 Thursday 23rd and Friday 24th remain unchanged.
Latest of 7 CRT updates, 21 April 2026.
Lock 65 to Lock 85, Wigan flight
Leeds & Liverpool CanalNorth West
1 day
From 3 June 2026
Reopened 4 June 2026
- Where
- Lock 85, Lock 21 to Lock 65, Top Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Navigation is currently closed along the Wigan flight, Lock 65 to Lock 85, on the Leeds & Liverpool Canal due to damaged cills at Lock 70 and Lock 75 on the Leeds & Liverpool Canal. Our team needs to dewater the affected locks to allow us to investigate and create a method of…
Latest of 2 CRT updates, 3 June 2026.
Slat Mill Lock 26
Oxford CanalLondon and South East
same day
From 3 July 2026
Reopened 3 July 2026
- Where
- Lock 26, Slat Mill Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Canal closure at Slat Mill Lock 26 Friday 3rd July 2026 Start at 8am and re-open at 12 noon Repair being undertaken to reduce water loss through the top gate cill. Thank you for your patience while this essential water saving repair is undertaken
CRT's only update, 2 July 2026.
Showing the 17 longest of 17. Every row links to the notice CRT published.
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