Independent. Built from Canal & River Trust's own published notices, with no affiliation to or endorsement by the Trust.
All closures / What fails / Lock / Hydraulics
Hydraulics
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: 2 against 0. How this is tested.
- On record
- 6 closures since May 2025
In force today
No closure of this kind is in force today.
By canal
6 canals have had a closure of this kind. A closure naming two canals counts on both.
| Canal | Closures |
|---|---|
| Aire & Calder Navigation Main Line | 1 |
| Chesterfield Canal | 1 |
| Grand Union Canal | 1 |
| Lee Navigation | 1 |
| New Junction Canal | 1 |
| River Trent | 1 |
Every closure on record
Showing 6 closures involving a lock hydraulics.
Rank by
Population
1 closure is in neither group: 1 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
West Stockwith Lock
Chesterfield CanalYorkshire and North East
4 days
From 14 September 2026
Reopened 18 September 2026
- Where
- Lock 65, West Stockwith Lock
- CRT reason
- Maintenance
- Cause
- Worn out
- Asset
- Lock
Please be advised that Lock 65, West Stockwith Lock will be closed to navigation to allow essential refurbishment works to be carried out on the lock gates. The works include refurbishment of the gate hydraulic cylinders, together with renewal of the associated hydraulic…
CRT's only update, 25 August 2026.
Navigation Closure - Grand Union Canal, Lock 100, Brentford Lock, Brentford
Grand Union CanalLondon and South East
3 days
From 16 January 2026
Reopened 19 January 2026
- Where
- Lock 100A, Brentford Lock
- CRT reason
- Maintenance
- Cause
- Broke, cause not given
- Asset
- Lock
Due to a technical fault with the lock powerpack, Brentford lock is currently inoperable. Thank you for your understanding and cooperation at this time.
CRT's only update, 16 January 2026.
Sykehouse Lock - not working due to a faulty hydraulic unit.
New Junction CanalYorkshire and North East
2 days
From 7 August 2026
Reopened 9 August 2026
- Where
- Sykehouse Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
A fault has occurred with the hydraulic Unit on Sykehouse Lock. It has been reported to Engineers and they will be in attendance within the next 72 hours. We will update the notice when the hydraulic unit has been repaired and the lock is operational again.
CRT's only update, 7 August 2026.
Newark Town Lock on the River Trent
River TrentEast Midlands
1 day
From 9 May 2026
Reopened 10 May 2026
- Where
- Lock 13, Newark Town Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
There has been a mechanical fault with the top gate at Newark Town Lock, the top gate has suffered a hydraulic failure and our contractors are on the call out to attend site immediately. Unfortunately the lock is closed until further notice.
CRT's only update, 9 May 2026.
Lock 7, Lemonroyd Lock
Aire & Calder Navigation Main LineYorkshire and North East
1 day
From 16 August 2026
Reopened 17 August 2026
- Where
- Lock 7, Lemonroyd Lock
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
A team have attended site and fixed the hydraulic power pack. The lock is now back open for use as normal.
Latest of 2 CRT updates, 17 August 2026.
Tottenham Lock
Lee NavigationLondon and South East
1 day
From 5 September 2026
Reopened 6 September 2026
- Where
- Lock 17, Tottenham Lock, Eastern Side
- CRT reason
- Repair
- Cause
- Broke, cause not given
- Asset
- Lock
Fault with hydraulic power pack preventing lock operations. Repair currently anticipated by late afternoon on Sunday 6th September.
CRT's only update, 5 September 2026.
Showing the 6 longest of 6. Every row links to the notice CRT published.
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