Dimensions

Dimensions

Grand Union Canal Pinch Points

Listed below are the main pinch points we want to make boaters aware of along this waterway.

Lock 82 Rickmansworth to Berkhamsted - Lock 82 Rickmansworth

Length
-
Beam
4.45m
14.60ft
Draught
-
Headroom
-

Brentford - Camp Hill tradtionally at 72' length 7' width. 14' width to Berkamsted. Measurements show longer craft possible


Lock 82 Rickmansworth to Berkhamsted - Lock 58 Berkhamsted

Length
24.1m
79.07ft
Beam
-
Draught
1.23m
4.04ft
Headroom
-


Lock 82 Rickmansworth to Berkhamsted - Bridge 155 Hemel Hempstead

Length
-
Beam
-
Draught
-
Headroom
2.4m
7.87ft


Berkhamsted to Norton Junction - Tiddenfoot Narrows, Leighton Buzzard

Length
-
Beam
3.88m
12.73ft
Draught
-
Headroom
-

Movement of former bridge abutments restricting craft


Berkhamsted to Norton Junction - Lock 8 Buckby

Length
24.2m
79.40ft
Beam
-
Draught
1.29m
4.23ft
Headroom
-


Berkhamsted to Norton Junction - Bridge 140 Berkhamsted

Length
-
Beam
-
Draught
-
Headroom
2.33m
7.64ft


Norton Junction to Napton Junction - Lock 1 Braunston

Length
24.15m
79.23ft
Beam
-
Draught
-
Headroom
-


Aylesbury Arm - Lock 2 Marsworth

Length
22.82m
74.87ft
Beam
2.29m
7.51ft
Draught
1.29m
4.23ft
Headroom
-


Aylesbury Arm - Bridge 13

Length
-
Beam
-
Draught
-
Headroom
2.33m
7.64ft


Northampton Arm - Lock 8

Length
22.67m
74.38ft
Beam
-
Draught
-
Headroom
-


Bulls Bridge to Little Venice (no locks) - Black Horse Bridge 15

Length
-
Beam
4.5m
14.76ft
Draught
-
Headroom
-

No locks


Bulls Bridge to Little Venice (no locks) - Harrow Road Bridge 3

Length
-
Beam
-
Draught
-
Headroom
2.23m
7.32ft


Brentford to Bulls Bridge

Length
22.4m
73.49ft
Beam
4.42m
14.50ft
Draught
1.68m
5.51ft
Headroom
-


Brentford to Bulls Bridge - Western Road Bridge 201

Length
-
Beam
-
Draught
-
Headroom
3.03m
9.94ft


Bulls Bridge to Stockers Lock (London boundary)

Length
21.95m
72.01ft
Beam
4.28m
14.04ft
Draught
1.23m
4.04ft
Headroom
-


Bulls Bridge to Stockers Lock (London boundary) - Packet Boat Lane Bridge

Length
-
Beam
-
Draught
-
Headroom
2.49m
8.17ft


Napton to Camp Hill - Hatton Locks

Length
24.5m
80.38ft
Beam
-
Draught
1.86m
6.10ft
Headroom
-


Napton to Camp Hill - Bridge 23

Length
-
Beam
-
Draught
-
Headroom
2.41m
7.91ft


Napton to Camp Hill - Bridge 59

Length
-
Beam
3.9m
12.80ft
Draught
-
Headroom
-


The above data is British Waterways' estimate of the dimensions of our waterways based upon local knowledge and expertise. Whilst British Waterways anticipates that this data is reasonably accurate, we cannot guarantee its precision. Therefore, this data should only be used as a helpful guide and you should always use your own judgement taking into account local circumstances at any particular time.