Featured canal · grand-union
Grand Union Canal
London to Birmingham via the Chilterns and Northants — the backbone of the southern English canal network. Heaviest paddle/narrowboat traffic outside the BCN.
328.9 km
Length
279
Locks
10
Storm overflows
0
Active right now
0
Spill events · 24 h
1
Open discrepancies
0
Monitors offline
335
Canal segments
Spill record· last 12 months · across the canal
23
spill events
+1050% vs prior 12m
49h
cumulative discharge
+772% vs prior 12m
12.7 h
longest single event (all time)
2024-09-25
first event on record
Truth Engine flags· 1 open
Recent spill events· last 7 days · 1
- 2026-06-17 06:02 UTCSevern Trent Water · SVT01670 · GRAND UNION CANAL2.5 h
Locks· 279
- Hatton Training Lock - Hatton Yard📍
- Lock 1📍
- Lock 1📍
- Lock 1📍
- Lock 1📍
- Lock 10📍
- Lock 10📍
- Lock 10📍
- Lock 10📍
- Lock 10📍
- Lock 100A, Brentford Lock📍
- Lock 100B, Brentford Lock📍
- Lock 101A, Thames Lock (House side)📍
- Lock 101B, Thames Lock (Boat yard side)📍
- Lock 11📍
- Lock 11📍
- Lock 11📍
- Lock 11📍
- Lock 11📍
- Lock 12📍
- Lock 12📍
- Lock 12📍
- Lock 12📍
- Lock 12, Shop Lock📍
- Lock 13📍
- Lock 13📍
- Lock 13📍
- Lock 13📍
- Lock 13, Itchington Bottom Lock📍
- Lock 14📍
- Lock 14📍
- Lock 14📍
- Lock 14, Bascote Top Lock📍
- Lock 14, Top Lock📍
- Lock 15📍
- Lock 15📍
- Lock 15📍
- Lock 15, Bottom Staircase Lock📍
- Lock 15, Osier Bed Lock📍
- Lock 16📍
- Lock 16📍
- Lock 16📍
- Lock 16📍
- Lock 16, Bascote Lock 3📍
- Lock 17📍
- Lock 17📍
- Lock 17📍
- Lock 17, Bascote Lock 4📍
- Lock 18📍
- Lock 18 - Kibworth Top Lock📍
- Lock 18, Welsh Road Lock📍
- Lock 19📍
- Lock 19 - Gas Pipe Lock📍
- Lock 19, Wood Lock📍
- Lock 1, Braunston📍
- Lock 1, Camp Hill Top Lock (Lock 52)📍
- Lock 2📍
- Lock 2📍
- Lock 2📍
- Lock 2📍
- Lock 2📍
- Lock 20📍
- Lock 20, Fosse Top Lock📍
- Lock 20 - Taylors Lock📍
- Lock 21, Cosgrove Lock📍
- Lock 21, Fosse Middle Lock📍
- Lock 21 - Pywells Lock📍
- Lock 22 - Cranes Lock📍
- Lock 22, Fenny Stratford Lock📍
- Lock 22, Fosse Bottom Lock📍
- Lock 23 - Newton Top Lock📍
- Lock 23, Radford Bottom Lock📍
- Lock 23, Stoke Hammond Lock📍
- Lock 24, Cape Bottom Lock📍
- Lock 24 - Spinney Lock📍
- Lock 24, Three Locks bottom📍
- Lock 25, Cape Top Lock📍
- Lock 25, Three Locks middle📍
- Lock 25 - Top Halfmile Lock📍
- Lock 26 - Bottom Half Mile📍
+ 199 more locks on this canal