Independent. Built from Canal & River Trust's own published notices, with no affiliation to or endorsement by the Trust.
The archive / Grand Union Canal
Grand Union Canal
3.9 closure-days per kilometre (95% range 3.6–4.1) — 812 days across 116 closures of this 210km canal.
Lengths from CRT's ArcGIS open data, published under the strictest reading of its licence. A notice is attributed to the whole named waterway, not to a point.
Something was shut here on 48% of this cruising season — 111 of its 231 days — across 42 separate closures.
That means a closure somewhere on the canal, not that the whole canal was impassable. Every closure below names the locks or bridges it sat between.
Nothing is shut on this canal today.
- Regions
- East Midlands, London and South East, West Midlands
- On record
- 133 closures
The season, closure by closure
Each row is one closure. A bar starts and ends where the closure did, and its length is how long it ran; dashed bars have not started yet.
Lock 42 to Lock 44Lock 43Shrewley TunnelLock 90, Norwood Top Lock to Lock 97, Hanwell Bottom LockLock 90, Norwood Top Lock to Lock 97, Hanwell Bottom LockLock 90, Norwood Top Lock to Lock 97, Hanwell Bottom LockLock 24, Three Locks bottom to Lock 26, Three Locks topLock 84, Copper Mill LockLock 76, Cassiobury Park to Lock 77, Ironbridge LockLock 47, Knowle Bottom LockLock 15 to Lock 17Lock 51 Gas 1 LockLock 22, Fenny Stratford LockLock 24, Three Locks bottom to Lock 26, Three Locks topLock 57 to Lock 58Lock 77, Ironbridge Lock to Lock 78, Cassiobridge LockLock 64Lock 8 to Lock 13Bridge 79A, Solihull Gas Footbridge to Bridge 79, Damson LaneLock 78, Cassiobridge Lock to Lock 79, Common Moor LockLock 6, Camp Hill (Lock 57) to Lock 1, Camp Hill Top Lock (Lock 52)Bridge 169A (Railway) to Lock 79, Common Moor LockBridge 55 John's BridgeBridge 111, Globe Inn to Lock 27, Leighton LockLock 1, Braunston to Lock 6, Top LockBridge 65, Old Warwick Road to Winding Hole, Kingswood JunctionBridge 78A, Damson Parkway BridgeLock 23, Stoke Hammond LockLock 28Lock 1, Camp Hill Top Lock (Lock 52) to Lock 51, Knowle Top LockLock 59, Winkwell LocksLock 99, Clitheroes LockBridge 147, W'Well SwingbridgeLock 23, Stoke Hammond Lock to Lock 24, Three Locks bottomBridge 106, Paper Mill to Lock 24, Three Locks bottomLock 83, Springwell Lock to Bridge 176C (Sewer Pipe)Lock 14, Top Lock to Lock 20Lock 23, Stoke Hammond LockLock 61, Winkwell LocksBridge 18, Muscott Mill BridgeLock 23, Stoke Hammond Lock to Lock 26, Three Locks topLock 23, Stoke Hammond Lock to Lock 26, Three Locks top
Every closure on record
Showing all 117 closures on the Grand Union Canal.
116
closures
812
closure-days
333
in cruising season
0
no reopening date
What these figures mean
- Population
- Which closures a figure counts. All closures is everything; Unplanned, in season drops CRT's scheduled winter programme and any day outside the 15 March to 31 October cruising season; CRT winter programme is that maintenance 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.
May 25Jun 25Jul 25Aug 25Sep 25Oct 25Nov 25Dec 25Jan 26Feb 26Mar 26Apr 26May 26Jun 26Jul 26Aug 26Sep 26
| Notice | Extent | Started | Days |
|---|---|---|---|
| Locks 42, 43 and 44 - Marsworth Flight | Lock 42 to Lock 44 | 2026-01-06 | 73 |
| Advice - Grand Union Canal, Clitheroe's Lock, Lock 99, Brentford | Lock 99, Clitheroes Lock | 2025-05-27 | 71 |
| Lock 5, Camp Hill | Lock 6, Camp Hill (Lock 57) to Lock 1, Camp Hill Top Lock (Lock 52) | 2026-01-05 | 53 |
| Lock 2, Camp Hill | Lock 6, Camp Hill (Lock 57) to Lock 1, Camp Hill Top Lock (Lock 52) | 2026-01-05 | 46 |
| Lock 7, Top Lock - Near Long Buckby Wharf | Lock 7, Top Lock | 2025-11-03 | 46 |
| Between Camp Hill Top Lock and Knowle Top Lock | Lock 1, Camp Hill Top Lock (Lock 52) to Lock 51, Knowle Top Lock | 2026-08-03 | 46 |
| Lock 35, Hatton | Lock 46, Hatton Top Lock to Lock 26, Hatton Bottom Lock | 2025-11-03 | 39 |
| 10 mile pound between Bordesley Junction and Knowle Locks | Bridge under towing path, Bordesley Jcn to Lock 51, Knowle Top Lock | 2025-08-08 | 39 |
| Lock 3, Calcutt | Lock 1 to Lock 3 | 2025-11-03 | 37 |
| Batchworth Mooring - above Batchworth Lock 81 | Lock 81, Batchworth Lock | 2026-01-09 | 34 |
| Bridge 111 Globe Inn | Bridge 111, Globe Inn to Lock 27, Leighton Lock | 2025-11-15 | 34 |
| Calcutt Locks | Lock 1 to Lock 3 | 2025-07-29 | 29 |
| Lock 80 | Lock 80, Lot Mead | 2026-02-23 | 18 |
| Lock 13, Itchington Bottom Lock | Lock 13, Itchington Bottom Lock | 2025-06-25 | 16 |
| Calcutt Lock 1 (Top Lock) to Lock 23 (Radford Bottom Lock) | Lock 23, Radford Bottom Lock to Weired Lock 1, Calcutt Lock 1 | 2025-11-05 | 15 |
| Tree within navigation, Bridge 81, Grand Union South | Bridge 81, Willen Bridge | 2025-12-24 | 12 |
| Long Buckby, Lock 12 – 13 | Lock 12 to Lock 13 | 2026-01-26 | 11 |
| Lock 47, Dudswell lock | Lock 47, Dudswell Lock | 2026-01-12 | 11 |
| Lock 69, Nash Mills | Lock 69, Nash Mills | 2026-02-02 | 11 |
| Between bridges 19 and 21 on the Grand Union Canal, between Weedon Bec and Muscott | Grand Union Canal - 082 | 2025-08-29 | 7 |
| South of Bridge 177 Grand Union | Bridge 177 to Bridge 177A, Footbridge over Troy Arm | 2025-09-15 | 7 |
| Soulbury Three Locks, near Stoke Hammond, Buckinghamshire | Lock 24, Three Locks bottom to Lock 26, Three Locks top | 2026-04-15 | 7 |
| Navigation Closure - Grand Union Canal, Lock 84 Copper Mill Lock, Harefield | Lock 84, Copper Mill Lock | 2026-04-17 | 7 |
| Fenny Stratford Lock 22 | Lock 22, Fenny Stratford Lock | 2026-05-21 | 6 |
| Out of Service - Bridge 147, Wink Well Swing bridge, Bourne End | Bridge 147, W'Well Swingbridge | 2026-08-07 | 6 |
| Winkwell Swing Bridge 147 | Bridge 147, W'Well Swingbridge | 2025-05-23 | 5 |
| Navigation Closure due to Fallen Tree - Grand Union Canal upstream of lock 72, Hunton Bridge, Kings Langley | Lock 72 | 2025-07-02 | 5 |
| Welton Lane Bridge 6, East of Braunston Tunnel | Bridge 6, Welton Wharf Bridge | 2026-02-15 | 5 |
| Below Bridge 176, Springwell Lane | Lock 83, Springwell Lock to Bridge 176C (Sewer Pipe) | 2026-08-16 | 5 |
| Stoke Hammond, Locks 22 – 26 | Lock 22, Fenny Stratford Lock to Lock 26, Three Locks top | 2026-02-16 | 4 |
| Stoke Bruerne Lock Flight | Lock 14, Top Lock to Lock 20 | 2026-01-26 | 4 |
| Lock 45 Grand Union | Lock 45 | 2025-06-26 | 4 |
| Camp Hill Top Lock to Knowle Top Lock | Lock 1, Camp Hill Top Lock (Lock 52) to Lock 51, Knowle Top Lock | 2025-07-05 | 4 |
| Marsworth Flight Closure | Lock 39 to Lock 45 | 2025-10-30 | 4 |
| Lock 52 -lock 53 Grand Union closure at 15:30 | Lock 52, Gas 2 Lock to Lock 53 | 2026-01-16 | 4 |
| Fallen tree between locks 57 -58 | Lock 57 to Lock 58 | 2026-05-28 | 4 |
| Lock 2 Camp Hill Lock | Lock 3, Camp Hill (Lock 54) New to Lock 1, Camp Hill Top Lock (Lock 52) | 2025-07-05 | 3 |
| Just before Northern Portal of Blisworth Tunnel | Grand Union Canal - 100 | 2025-09-15 | 3 |
| Shrewley Tunnel South East Portal | Shrewley Tunnel | 2025-11-14 | 3 |
| Winkwell swing bridge | Bridge 147, W'Well Swingbridge | 2025-12-19 | 3 |
| Navigation Closure - Grand Union Canal, Lock 100, Brentford Lock, Brentford | Lock 100A, Brentford Lock | 2026-01-16 | 3 |
| Lock 37 and Lock 38 | Lock 37 to Lock 38 | 2026-02-24 | 3 |
| Lock 28, Hatton | Lock 28 | 2026-07-31 | 3 |
| between lock 24 (three locks bottom) and lock 23 (stoke hammond lock) | Lock 23, Stoke Hammond Lock to Lock 24, Three Locks bottom | 2026-08-07 | 3 |
| Muscott Mill Bridge 18, near Buckby Flight | Bridge 18, Muscott Mill Bridge | 2026-09-07 | 3 |
| HS2 Longhole Viaduct, Ufton, Warwickshire | Bridge 30, Welsh Road to Lock 19, Wood Lock | 2026-03-04 | 2 |
| Knowle Lock Flight, Knowle, Solihull | Lock 51, Knowle Top Lock to Lock 47, Knowle Bottom Lock | 2026-02-02 | 2 |
| Bridge 82, Dove House Lane & Bridge 83, Castle Lane. | Bridge 83, Castle Lane New Concrete to Bridge 82a, Old Dove House Lane Bridge | 2025-06-15 | 2 |
| Between Blackjacks and Widewater locks | Grand Union Canal - 196 | 2025-07-06 | 2 |
| Fenny Stratford Lock 22 | Lock 22, Fenny Stratford Lock | 2025-07-28 | 2 |
| Lock 56 | Lock 56 | 2025-08-16 | 2 |
| Navigation Closure - Grand Union Canal, Hanwell flight - Lock 90 to lock 97, Hanwell | Lock 90, Norwood Top Lock to Lock 97, Hanwell Bottom Lock | 2026-03-30 | 2 |
| North of Iron Bridge Lock No 77 Grand Union Canal, Watford WD17 3BD | Lock 76, Cassiobury Park to Lock 77, Ironbridge Lock | 2026-04-29 | 2 |
| Fallen Tree Blocking Navigation & Towpath South of Lock 77 Grand Union Canal Cassiobury Park | Lock 77, Ironbridge Lock to Lock 78, Cassiobridge Lock | 2026-06-02 | 2 |
| Lock 14 to Lock 20, Stoke Bruerne | Lock 14, Top Lock to Lock 20 | 2026-08-17 | 2 |
| Marsworth Flight closed to Navigation. Lock 45 is closed and no navigation is possible above lock 43 | Lock 43 to Lock 45 | 2025-05-07 | 1 |
| between footbridge 69 and bridge 70A Wolverton | Bridge 69, Footbridge to Bridge 70 (Railway) | 2025-05-24 | 1 |
| Lock 43 Grand Union | Lock 43 | 2025-06-03 | 1 |
| Lock 58 - Grand Union Canal | Lock 58 | 2025-06-25 | 1 |
| Lock 1, Braunston to Lock 6, Top Lock | Lock 1, Braunston to Lock 6, Top Lock | 2025-11-10 | 1 |
| Camp Hill Lock Flight | Lock 6, Camp Hill (Lock 57) to Lock 1, Camp Hill Top Lock (Lock 52) | 2025-07-16 | 1 |
| Lock 8 Long Buckby | Lock 8 | 2025-08-05 | 1 |
| Lock 23, Radford Bottom Lock, Leamington Spa CV31 1TN | Lock 23, Radford Bottom Lock to Bridge 17, Napton Juction | 2025-08-16 | 1 |
| Downstream GU-193-007 - Bridge 176A | Bridge 176A (Footbridge) to Bridge 176B (Water Mains) | 2025-09-12 | 1 |
| Railway Bridge 156 to Lock 69A | Bridge 156 (Railway) to Lock 69A, Kings Langley | 2025-10-04 | 1 |
| Bridge 21 Brockhall Bridge, Northampton NN7 4TA | Bridge 21, Brockhall Road Bridge | 2025-10-05 | 1 |
| Lock 77 Dewatering, Grand Union Canal, Watford | Lock 77, Ironbridge Lock | 2025-10-21 | 1 |
| Between Eastern portal (Welton End) of Braunston Tunnel and Lock 1 (Braunston) | Lock 1, Braunston to Braunston Tunnel | 2025-11-13 | 1 |
| Lock 79 Common moor lock | Lock 79, Common Moor Lock | 2025-11-17 | 1 |
| Between Bridge 134 and Bridge 133 (B488) | Winding Hole Bulbourne to Bridge 134, High Bridge | 2025-12-02 | 1 |
| LK 56 Top Side Lock(pink house) | Lock 55, Rising Sun to Lock 56 | 2026-01-20 | 1 |
| Lock 54 Ravens Lane | Lock 54 | 2026-01-27 | 1 |
| Lock 52 Gas 2, Berkhamsted | Lock 51 Gas 1 Lock to Lock 52, Gas 2 Lock | 2026-02-03 | 1 |
| Lock 55 Rising Sun | Lock 54 to Lock 55, Rising Sun | 2026-02-10 | 1 |
| Winkwell Swing Bridge | Bridge 147, W'Well Swingbridge | 2026-02-23 | 1 |
| Shrewley Tunnel South East Portal | Shrewley Tunnel | 2026-03-25 | 1 |
| Navigation Closure - Grand Union Canal, Hanwell flight from lock 90 to lock 97, Norwood/Hanwell | Lock 90, Norwood Top Lock to Lock 97, Hanwell Bottom Lock | 2026-03-25 | 1 |
| Navigation Closure - Grand Union Canal, Hanwell Flight between lock 90 and 97 , Hanwell | Lock 90, Norwood Top Lock to Lock 97, Hanwell Bottom Lock | 2026-04-08 | 1 |
| Navigation Closure - Grand Union Canal, Lock 64 | Lock 64 | 2026-06-09 | 1 |
| Long Buckby, Between Lock 8 and Lock 13 | Lock 8 to Lock 13 | 2026-06-16 | 1 |
| Between Bridge 79A and Bridge 79, Catherine-de-barnes | Bridge 79A, Solihull Gas Footbridge to Bridge 79, Damson Lane | 2026-06-17 | 1 |
| Fallen tree north of Lock 79 | Bridge 169A (Railway) to Lock 79, Common Moor Lock | 2026-06-25 | 1 |
| The Globe Inn, Bridge 111 to Leighton Lock 27 | Bridge 111, Globe Inn to Lock 27, Leighton Lock | 2026-06-28 | 1 |
| Bridge 65 Old Warwick road | Bridge 65, Old Warwick Road to Winding Hole, Kingswood Junction | 2026-07-05 | 1 |
| Bridge 78a, Damson Parkway Bridge, Catherine-de-Barnes. | Bridge 78A, Damson Parkway Bridge | 2026-07-06 | 1 |
| Lock 23 Stoke Hammond | Lock 23, Stoke Hammond Lock | 2026-07-13 | 1 |
| Lock 59 Winkwell Locks | Lock 59, Winkwell Locks | 2026-08-03 | 1 |
| Lock 99, Clitheroes Lock - Closure due to Emergency services incident | Lock 99, Clitheroes Lock | 2026-08-05 | 1 |
| Lock 23, Stoke Hammond Lock | Lock 23, Stoke Hammond Lock | 2026-08-21 | 1 |
| Lock 61, Winkwell Locks | Lock 61, Winkwell Locks | 2026-08-24 | 1 |
| Temporary Navigation Closure - Lock 23, Stoke Hammond Lock to Lock 26, Three Locks | Lock 23, Stoke Hammond Lock to Lock 26, Three Locks top | 2026-09-21 | 1 |
| Lock 80 Lot Mead - Lock 81 Batchworth Lock | Lock 80, Lot Mead to Lock 81, Batchworth Lock | 2025-06-05 | same day |
| Braunstone tunnel, eastern portal. | Grand Union Canal - 074 | 2025-06-14 | same day |
| Lock 58 (GU-171-003) E:501262, N: 206819 ///store.rats.glory | Lock 58 | 2025-06-25 | same day |
| Lock 26 Three Locks Top to Lock 38 | Lock 26, Three Locks top to Lock 38 | 2025-07-16 | same day |
| From Lock 23 to Lock 38 | Lock 23, Stoke Hammond Lock to Lock 38 | 2025-07-17 | same day |
| Lock 23, Stoke Hammond Lock Overnight Closurerestricted | Lock 23, Stoke Hammond Lock | 2025-07-17 | 1 |
| Stone Wharf Basin Bridge 88C, Hay Mills to Bridge No. 86A, Yardley Tunnel | Stone Wharf Basin Bridge 88C, Hay Mills to Bridge No. 86A, Yardley Tunnel | 2025-07-19 | same day |
| Between Bridge 169 and Lock 79, Grand Union Canal | Bridge 169A (Railway) | 2025-07-19 | same day |
| Lock 18, Stoke Bruerne | Lock 18 | 2025-08-13 | same day |
| Lock 85, Black Jacks Lock | Lock 85, Black Jacks Lock | 2025-08-20 | same day |
| Locks 2 & 3 Camp Hill flight | Lock 2, Camp Hill (Lock 53) to Lock 3, Camp Hill (Lock 54) New | 2025-09-26 | same day |
| Between Locks 7 and 8 on the Buckby Flight, Grand Union Canal | Lock 7, Top Lock to Lock 8 | 2025-10-11 | same day |
| Between locks 54 - 53 Berkhamsted | Lock 53 to Lock 54 | 2025-12-22 | same day |
| Leighton Buzzard- Winter Series - 25 January - Grand Union Canal (LSE) | Lock 26, Three Locks top to Lock 28, Grove Lock | 2026-01-25 | same day |
| Between Bridges 133 and 134, Grand Union Canal, Tring | Bridge 133 (B488) to Bridge 134, High Bridge | 2026-01-18 | same day |
| Lock 43, Hatton | Lock 43 | 2026-03-19 | same day |
| Lock 47, Knowle Bottom Lock | Lock 47, Knowle Bottom Lock | 2026-04-29 | same day |
| Between Locks 15 and 17, Stoke Bruerne | Lock 15 to Lock 17 | 2026-05-15 | same day |
| Lock 51 Gas 1 Lock | Lock 51 Gas 1 Lock | 2026-05-19 | same day |
| Soulbury Three Locks | Lock 24, Three Locks bottom to Lock 26, Three Locks top | 2026-05-21 | same day |
| Fallen tree near Lock 79 Common Moor Lock | Lock 78, Cassiobridge Lock to Lock 79, Common Moor Lock | 2026-06-23 | same day |
| Camp Hill Lock Flight | Lock 6, Camp Hill (Lock 57) to Lock 1, Camp Hill Top Lock (Lock 52) | 2026-06-23 | same day |
| Bridge 55, Johns Bridge | Bridge 55 John's Bridge | 2026-06-26 | same day |
| Between Braunston Lock 1 and Lock 6 | Lock 1, Braunston to Lock 6, Top Lock | 2026-07-02 | same day |
| Fallen Tree onto Boat - Between Bridge 106, Paper Mill and Lock 24, Three Locks | Bridge 106, Paper Mill to Lock 24, Three Locks bottom | 2026-08-07 | same day |
| Temporary Navigation Closure - Lock 23, Stoke Hammond Lock to Lock 26, Three Locks | Lock 23, Stoke Hammond Lock to Lock 26, Three Locks top | 2026-09-18 | same day |
Showing the 117 longest of 117. Every row links to the notice CRT published.
Coming up
Scheduled but not yet started, so in no figure above.
| Closure | From | Planned |
|---|---|---|
| Curzon Viaduct (High Speed 2) Curzon Street Birmingham | 25 November 2026 | 107 days |
| Lock 14, Bascote | 4 January 2027 | 67 days |
| Lock 23, Stoke Hammond Lock | 4 January 2027 | 25 days |
| Lock 40 Marsworth Flight | 4 January 2027 | 25 days |
| Lock 15, Bascote | 4 January 2027 | 67 days |
| Lock 17, Bascote | 4 January 2027 | 67 days |
| Fosse Middle Lock 21, Near Royal Leamington Spa | 4 January 2027 | 67 days |
| Lock 17, Stoke Bruerne lock flight, Towcester | 4 January 2027 | 1 days |
| Bridge 61, White Bridge near Rowington | 4 January 2027 | 67 days |
| Lock 17, Stoke Bruerne | 11 January 2027 | 60 days |
| Lock 20, Stoke Bruerne | 11 January 2027 | 60 days |
| Lock 19, Stoke Bruerne | 11 January 2027 | 60 days |
| Lock 50, Bushes Lock | 1 February 2027 | 39 days |
| Lock 52, Gas 2 Lock | 1 February 2027 | 39 days |
| Lock 74, Lady Capels | 1 February 2027 | 11 days |
| Lock 59, Winkwell Locks | 22 February 2027 | 18 days |
Not counted
Cancelled notices and ones whose dates cannot be right are in no figure on this page. They are kept here because CRT published them.