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List of locks on the Grand Union Canal

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A list of locks on the Grand Union Canal and its branches.

Grand Union Canal (Main Line)

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The Grand Union Canal (Main Line) runs from Salford Junction, Birmingham to Brentford, London. Locks have a beam of 14 feet except locks 52 to 64 in Birmingham.[1][2][3][4][5] The numbering of locks originates at Braunston, and increases both towards the north, to Lock 64, and the south, to Lock 101.

Locks on the Grand Union Canal (Main Line)
Lock number Lock name Rise or fall
of lock(s)
(heading south) 		Co-ordinates Notes
Salford Junction to Napton
64 Nechells Shallow Lock or Salford Shallow Lock – 52°30'21.4"N 1°51'30.5"W 7’ beam, gates removed
59 – 63 Garrison Locks or Saltley Locks +34’ 5” 52°29'08.6"N 1°51'47.7"W 7’ beam. Between Garrison Top Lock (59) and Camp Hill Bottom Lock (57) is Bordesley Junction connecting to the Digbeth Branch.
58 Stop lock Digbeth branch – Abolished
52 – 57 Camp Hill Locks +41’ 8” 52°28'20.9"N 1°52'34.7"W 7’ beam
47 – 51 Knowle Locks –41’ 10” 52°22'57.8"N 1°43'20.2"W Between Knowle Bottom Lock (47) and Hatton Top Lock (46) is Kingswood Junction connecting to the Stratford-upon-Avon Canal.
46 Hatton Top Lock -146’ 6” 52°17'57.2"N 1°39'02.5"W
27 – 45 Hatton Locks 52°17'58.5"N 1°38'41.4"W
26 Hatton Bottom Lock 52°17'13.6"N 1°36'39.2"W Between Hatton Bottom Lock (26) and Cape Top Lock (25) is Budbrooke Junction connecting to the Saltiford Arm.
24 – 25 Cape Locks −14’ 4” 52°17'33.2"N 1°35'41.6"W
23 Radford Bottom Lock +7’ 0” 52°16'53.6"N 1°29'07.0"W
20 – 22 Fosse Locks +21’ 0” 52°16'35.9"N 1°28'07.2"W
19 Wood Lock +6’ 7” 52°16'18.4"N 1°26'57.3"W
18 Welsh Road Lock +6’ 11” 52°16'21.6"N 1°26'09.8"W
14 – 17 Bascote Locks +26’ 9” 52°16'26.7"N 1°25'17.1"W Locks 14 & 15 are a staircase lock
13 Itchington Bottom Lock +6’ 7” 52°16'43.9"N 1°23'10.6"W
5 – 12 Stockton Locks +54’ 7” 52°16'49.2"N 1°22'08.6"W
4 Stockton Top Lock 52°16'53.7"N 1°21'54.5"W
1 – 3 Calcut Locks +16’ 2” 52°16'05.3"N 1°18'57.9"W Between Calcut Top Lock (1) and Braunston Bottom Lock (1) are: Napton Junction connecting to the Oxford Canal (south); and Braunston Junction connecting to the Oxford Canal (north).  
Napton to Braunton – Oxford Canal (no locks)
Braunston to Brentford
1 Braunston Bottom Lock +35’ 6” 52°17'20.8"N 1°12'09.9"W
2 – 5 Braunston Lock Flight 52°17'14.0"N 1°11'40.6"W
6 Braunston Top Lock 52°17'10.4"N 1°11'28.4"W Between Braunston Top Lock (6) and Buckby Top Lock (7) is Norton Junction connecting to the Leicester Section.
7 Buckby Top Lock -63’ 0” 52°17'08.4"N 1°06'49.5"W
8 – 12 Buckby Lock Flight 52°16'44.9"N 1°05'52.5"W
13 Buckby Bottom Lock 52°16'24.8"N 1°05'43.0"W Between Buckby Bottom Lock (13) and Stoke Bruerne Locks (14) is Gayton Junction connecting to the Northampton Arm.
14 – 15 Stoke Bruerne Locks -16’ 0” 52°08'31.3"N 0°54'53.3"W
16 – 20 Stoke Bruerne Locks -40’ 0” 52°08'11.8"N 0°54'30.0"W
21 Cosgrove Lock -3’ 4” 52°04'22.8"N 0°50'29.7"W
22 Fenny Stratford Lock +1’ 1” 52°00'02.7"N 0°42'51.6"W
23 Stoke Hammond Lock +6’ 11” 51°57'40.8"N 0°42'39.3"W
24 – 26 Soulbury Three Locks +20’ 3” 51°56'49.0"N 0°42'16.2"W
27 Leighton Lock +6’ 8” 51°55'36.8"N 0°39'54.1"W
28 Grove Lock +7’ 6” 51°53'53.5"N 0°40'17.0"W
29 Church Lock +6’ 9” 51°53'35.6"N 0°39'44.9"W
30 Slapton Lock +7’ 1” 51°52'23.8"N 0°39'08.0"W
31 Horton Lock +6’ 9” 51°52'00.1"N 0°38'55.1"W
32 – 33 Ivinghoe Locks +14’ 3” 51°51'26.7"N 0°38'48.0"W
34 – 36 Seabrook Locks +20’ 4” 51°50'45.6"N 0°38'38.5"W
37 – 38 Marsworth Locks +14’ 4” 51°49'42.2"N 0°39'39.1"W Between Marsworth Lock (38) and Marsworth Lock (39) is Marsworth Junction connecting to the Aylesbury Arm.
39 – 45 Marsworth Locks +42’ 3” 51°48'57.2"N 0°39'15.3"W Bulbourne, summit, 473 feet (144 metres) above Thames Locks.
46 Cowroast Lock -6’ 0” 51°47'01.0"N 0°36'44.3"W Between Marsworth Lock (45) and Cow Roast Lock (46) is Bulbourne Junction connecting to the Wendover Arm.
47 – 48 Dudswell Locks -13’ 4” 51°46'46.6"N 0°36'18.1"W
49 Northchurch Lock -26’ 11” 51°46'16.6"N 0°35'19.0"W Northchurch Locks
50 Bushes Lock 51°46'03.6"N 0°34'56.2"W
51 Gas 1 Lock 51°45'55.4"N 0°34'23.5"W
52 Gas 2 Lock 51°45'53.4"N 0°34'17.8"W
53 Berkhamsted Lock -16’ 10” 51°45'44.6"N 0°33'50.5"W Berkhamsted Locks
54 Ravens Lock 51°45'37.2"N 0°33'26.1"W
55 Rising Sun Lock 51°45'33.0"N 0°33'22.6"W
56 Top Side Lock -19’ 4” 51°45'18.4"N 0°32'40.7"W Bourne End Locks
57 Bottom Side Lock 51°45'09.0"N 0°32'22.8"W
58 Sewer Lock 51°45'03.2"N 0°32'03.7"W
59 Bourne End Bottom Lock -7’ 4” 51°44'50.6"N 0°31'24.5"W
60 Winkwell Lock -13’ 7” 51°44'50.6"N 0°31'24.6"W
61 Winkwell Bottom Lock 51°44'47.1"N 0°30'44.6"W
62 Boxmoor Top Lock -6’ 8” 51°44'42.1"N 0°30'02.7"W
63 Fishery Lock -7’ 1” 1°44'39.1"N 0°29'29.6"W
64 Boxmoor Lock -7’ 1” 51°44'35.2"N 0°28'34.1"W
65 – 67 Apsley Locks -16’ 0” 51°44'10.7"N 0°27'49.5"W
68 Nash Mills Lock -12’ 2” 51°43'46.9"N 0°27'13.7"W Nash Mills Locks
69 Red Lion Lock 51°43'40.1"N 0°27'09.4"W
69A Kings Langley Lock -8’ 9” 51°42'50.5"N 0°26'40.0"W
70 Home Park Lock -5’ 2” 51°42'25.2"N 0°26'31.0"W
71 North Grove Lock -6' 11" 51°41'58.2"N 0°26'19.9"W
72 – 73 Hunton Bridge Locks -11’ 2” 51°41'26.1"N 0°26'05.6"W
74 Lady Capel's Lock -5’ 4” 51°40'52.7"N 0°25'53.6"W
75 – 76 Cassiobury Park Locks -10’ 0” 51°40'19.6"N 0°25'35.1"W
77 Iron Bridge Lock -9’ 4” 51°39'51.7"N 0°25'36.6"W
78 Cassio Bridge Lock -9’ 0” 51°39'16.2"N 0°25'39.5"W
79 Common Moor Lock -9’ 5” 51°38'43.1"N 0°26'19.2"W
80 Lot Mead Lock -6’ 3” 51°38'17.0"N 0°27'03.4"W
81 Batchworth Lock -6’ 8” 51°38'05.7"N 0°27'58.8"W
82 Stocker's Lock -5’ 2” 51°37'48.3"N 0°28'52.4"W
83 Springwell Lock -7’ 11” 51°37'32.0"N 0°29'40.9"W
84 Copper Mill Lock -5’ 10” 51°36'38.9"N 0°29'54.3"W
85 Black Jack's Lock -3’ 8” 51°36'09.0"N 0°29'43.2"W
86 Widewater Lock -8’ 0” 51°35'15.4"N 0°29'09.8"W
87 Denham Deep Lock -11’ 1” 51°33'55.1"N 0°28'56.0"W
88 Uxbridge Lock -4’ 7” 51°33'08.6"N 0°29'00.7"W
89 Cowley Lock -6’ 6” 51°31'44.1"N 0°29'08.4"W Between Cowley Lock (89) and Norwood Top Lock (90) are: Cowley Peach Junction connecting to the Slough Arm (no locks); and Bulls Bridge Junction connecting to the Paddington Arm (no locks).
90 Norwood Top Lock -7’ 10” 51°30'06.6"N 0°21'47.4"W
91 – 97 Hanwell Locks -53’ 2” 51°30'19.5"N 0°20'50.5"W
98 Osterley Lock -5’ 7” 51°29'48.6"N 0°19'57.6"W
99 Clitheroe's Lock -7’ 7” 51°29'20.3"N 0°19'17.3"W
100 Brentford Gauging Locks -5’ 6” 51°28'59.3"N 0°18'41.7"W
101 Thames Locks Tidal 51°28'55.8"N 0°18'17.3"W Into tidal River Thames

Grand Union Canal branches

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The Paddington Arm and the Slough Arm have no locks.

The Wendover Arm Canal has one stop lock.

The Aylesbury Arm has 16 locks, see Aylesbury Canal Society.

The Leicester Branch from Norton Junction to the River Trent has 59 locks, see table.[2][5]

The Welford Arm, off the Leicester Branch, has one lock, Welford Lock with a rise of 3’ 6”.[2]

The Northampton Arm from Gayton Junction to the River Nene has 17 locks, see table.[1][5]

Locks on the Leicester Branch

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Locks on the Leicester Branch
Lock number Lock name Rise or fall
of lock(s)
(heading north) 		Co-ordinates Notes
1 Watford Bottom Lock +52’ 6” 52°11'52.7"N 0°56'39.6"W
2 – 7 Watford Locks 52°18'49.7"N 1°07'54.8"W 3 – 6 are staircase locks
8 – 17 Foxton Locks -75’ 0” 52°30'00.9"N 0°58'58.5"W Two staircases of five locks each.
18 Kibworth Top Lock -7’ 7” 52°32'37.9"N 1°01'54.5"W
19 Kibworth Second (or Gas Pipe) Lock -7’ 2” 52°32'45.7"N 1°01'36.9"W
20 Taylor's Turnover Lock -5’ 5” 52°32'49.4"N 1°01'32.2"W
21 Pywell's Lock -7’ 5” 52°32'55.5"N 1°01'31.2"W
22 Crane's Lock -5’ 9” 52°33'13.1"N 1°01'52.4"W
23 Newton Top Lock -5’ 6” 52°33'53.0"N 1°03'40.8"W
24 Spinney Lock -6’ 9” 52°33'51.6"N 1°03'57.4"W
25 Top Half Mile Lock -7’ 2” 52°33'49.1"N 1°04'12.3"W
26 Bottom Half Mile Lock -6’ 9” 52°33'32.7"N 1°04'46.3"W
27 Turnover Lock -7’ 5” 52°33'33.5"N 1°04'51.9"W
28 Tythorne Lock -6’ 9” 52°33'36.4"N 1°05'10.7"W
29 Bumblebee Lock -6’ 2” 52°33'43.2"N 1°05'21.1"W
30 Kilby Lock -6’ 4” 52°34'05.5"N 1°06'36.5"W
31 Double Rail Lock -7’ 9” 52°34'05.2"N 1°07'04.6"W
32 Ervin's Lock -7’ 0” 52°34'26.6"N 1°07'27.5"W
33 Bush Lock -7’ 7” 52°34'34.7"N 1°08'24.1"W
34 Dunn's Lock -6’ 4” 52°34'52.5"N 1°09'26.6"W
35 Whetstone Lane Lock -6’ 4” 52°34'56.9"N 1°10'01.2"W
36 Gee's Lock -7’ 2” 52°35'11.1"N 1°10'40.5"W
37 Blue Banks Lock -7’ 2” 52°35'26.4"N 1°10'18.0"W
38 Kings Lock -7’ 9” 52°36'05.9"N 1°09'51.3"W
39 Aylestone Mill Lock -6’ 5” 52°36'34.9"N 1°08'51.8"W
40 St Mary's Mill Lock -3’ 6” 52°37'03.6"N 1°08'54.3"W
41 Freeman's Meadow Lock -6’ 5” 52°37'17.2"N 1°08'41.4"W
42 North Lock -4’ 7” 52°38'27.5"N 1°08'35.5"W
43 Limekiln Lock -4’ 3” 52°38'43.7"N 1°07'46.3"W
44 Belgrave Lock -3’ 11” 52°39'15.0"N 1°07'41.7"W Joins River Soar
45 Birstall Lock -3’ 4” 52°40'25.2"N 1°06'57.1"W
46 Thurmaston Lock -3’ 2” 52°40'45.1"N 1°06'05.8"W Leaves River Soar
47 Junction Lock -4’ 9” 52°42'24.6"N 1°06'30.7"W
48 Cossington Lock -5’ 3” 52°42'37.2"N 1°07'15.4"W Joins River Soar
49 Sileby Lock -4’ 6” 52°43'37.2"N 1°07'25.6"W
50 Mountsorrel Lock -4’ 1” 52°43'54.4"N 1°08'22.5"W
51 Barrow Deep Lock -9’ 7” 52°44'59.1"N 1°09'08.5"W
52 Pilling's Flood Lock 52°45'30.7"N 1°09'50.2"W
53 Loughborough Lock -6’ 9” 52°46'49.1"N 1°12'58.5"W
54 Bishop Meadow Lock -8’ 7” 52°47'22.6"N 1°13'00.5"W
55 Zouch Lock -6’ 4” 52°48'23.4"N 1°15'22.6"W
56 Kegworth Deep Lock -7’ 9” 52°50'11.5"N 1°16'16.1"W
57 Kegworth Shallow (flood) Lock 52°50'26.2"N 1°16'03.7"W
58 Ratcliffe Lock -6’ 8” 52°51'31.1"N 1°16'18.7"W
59 Redhill Lock (flood lock) 52°52'05.7"N 1°16'12.9"W River Trent

The lock numbering sequence of the Leicester Branch continues along the Erewash Canal. From Lock 60 Trent Lock north to Lock 74 at Eastwood.

Locks on the Northampton Arm

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From Gayton Junction the Northampton Arm descends to the River Nene.[6]

Locks on the Northampton Arm
Lock number Lock name Fall of lock
(heading to
River Nene) 		Co-ordinates Notes
1 Rothersthorpe Top Lock -79' 10" 52°11'52.7"N 0°56'39.6"W
2 – 12 Rothersthorpe Locks 52°12'13.6"N 0°56'21.6"W
13 Rothersthorpe Bottom Lock 52°12'37.0"N 0°56'18.5"W
14 Wootton Lock -6' 9" 52°12'59.5"N 0°56'28.1"W
15 Hardingstone Lock -6' 3" 52°13'33.2"N 0°55'59.5"W
16 Huinsbury Lock -6' 10" 52°13'43.6"N 0°54'48.2"W
17 Northampton Lock -5' 0" 52°13'48.6"N 0°53'57.2"W River Nene

See also

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References

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  1. ^ a b Waterways Guide 1 Grand Union, Oxford & the South East. London: Nicholson. 2006. pp. 19–99. ISBN 978-0-00-721109-8.
  2. ^ a b c Waterways Guide 3 Birmingham & the Heart of England. London: Nicholson. 2009. pp. 71–122. ISBN 978-0-00-728162-6.
  3. ^ "Canal Plan Grand Union Canal". Canal Plan. Retrieved 19 March 2021.
  4. ^ Pearson, Michael (2017). Pearson's Canal Companion: South Midlands and Warwickshire Ring Canal Companion. Staffordshire: Wayzgoose. ISBN 978-0992849238.
  5. ^ a b c Pearson, Michael (2018). Pearson's Canal Companion: Leicester Line and River Nene. Staffordshire: Wayzgoose. ISBN 978-0992849245.
  6. ^ Green, Roger (2020). The River Nene. Imray, Laurie, Norie and Wilson Ltd.
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