List of locks on the Grand Union Canal

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

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 / 52.505944°N 1.858472°W / 52.505944; -1.858472 (64. Nechells Shallow Lock or Salford Shallow Lock) 7’ beam, gates removed
59 – 63 Garrison Locks or Saltley Locks +34’ 5” 52°29′08.6″N 1°51′47.7″W / 52.485722°N 1.863250°W / 52.485722; -1.863250 (59–63. Garrison Locks or Saltley Locks) 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 / 52.472472°N 1.876306°W / 52.472472; -1.876306 (52–57. Camp Hill Locks) 7’ beam
47 – 51 Knowle Locks –41’ 10” 52°22′57.8″N 1°43′20.2″W / 52.382722°N 1.722278°W / 52.382722; -1.722278 (47–51. Knowle Locks) 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 / 52.299222°N 1.650694°W / 52.299222; -1.650694 (46. Hatton Top Lock)
27 – 45 Hatton Locks 52°17′58.5″N 1°38′41.4″W / 52.299583°N 1.644833°W / 52.299583; -1.644833 (27–45. Hatton Locks)
26 Hatton Bottom Lock 52°17′13.6″N 1°36′39.2″W / 52.287111°N 1.610889°W / 52.287111; -1.610889 (26. Hatton Bottom Lock) Between Hatton Bottom Lock (26) and Cape Top Lock (25) is Budbrooke Junction connecting to the Saltisford Arm.
24 – 25 Cape Locks −14’ 4” 52°17′33.2″N 1°35′41.6″W / 52.292556°N 1.594889°W / 52.292556; -1.594889 (24–25. Cape Locks)
23 Radford Bottom Lock +7’ 0” 52°16′53.6″N 1°29′07.0″W / 52.281556°N 1.485278°W / 52.281556; -1.485278 (23. Radford Bottom Lock)
20 – 22 Fosse Locks +21’ 0” 52°16′35.9″N 1°28′07.2″W / 52.276639°N 1.468667°W / 52.276639; -1.468667 (20–22. Fosse Locks)
19 Wood Lock +6’ 7” 52°16′18.4″N 1°26′57.3″W / 52.271778°N 1.449250°W / 52.271778; -1.449250 (19. Wood Lock)
18 Welsh Road Lock +6’ 11” 52°16′21.6″N 1°26′09.8″W / 52.272667°N 1.436056°W / 52.272667; -1.436056 (18. Welsh Road Lock)
14 – 17 Bascote Locks +26’ 9” 52°16′26.7″N 1°25′17.1″W / 52.274083°N 1.421417°W / 52.274083; -1.421417 (14–17. Bascote Locks) Locks 14 & 15 are a staircase lock
13 Itchington Bottom Lock +6’ 7” 52°16′43.9″N 1°23′10.6″W / 52.278861°N 1.386278°W / 52.278861; -1.386278 (13. Itchington Bottom Lock)
5 – 12 Stockton Locks +54’ 7” 52°16′49.2″N 1°22′08.6″W / 52.280333°N 1.369056°W / 52.280333; -1.369056 (5–12. Stockton Locks)
4 Stockton Top Lock 52°16′53.7″N 1°21′54.5″W / 52.281583°N 1.365139°W / 52.281583; -1.365139 (4. Stockton Top Lock)
1 – 3 Calcut Locks +16’ 2” 52°16′05.3″N 1°18′57.9″W / 52.268139°N 1.316083°W / 52.268139; -1.316083 (1–3. Calcut Locks) 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 / 52.289111°N 1.202750°W / 52.289111; -1.202750 (1. Braunston Bottom Lock)
2 – 5 Braunston Lock Flight 52°17′14.0″N 1°11′40.6″W / 52.287222°N 1.194611°W / 52.287222; -1.194611 (2–5. Braunston Lock Flight)
6 Braunston Top Lock 52°17′10.4″N 1°11′28.4″W / 52.286222°N 1.191222°W / 52.286222; -1.191222 (6. Braunston Top Lock) 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 / 52.285667°N 1.113750°W / 52.285667; -1.113750 (7. Buckby Top Lock)
8 – 12 Buckby Lock Flight 52°16′44.9″N 1°05′52.5″W / 52.279139°N 1.097917°W / 52.279139; -1.097917 (8–12. Buckby Lock Flight)
13 Buckby Bottom Lock 52°16′24.8″N 1°05′43.0″W / 52.273556°N 1.095278°W / 52.273556; -1.095278 (13. Buckby Bottom Lock) 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 / 52.142028°N 0.914806°W / 52.142028; -0.914806 (14–15. Stoke Bruerne Locks)
16 – 20 Stoke Bruerne Locks -40’ 0” 52°08′11.8″N 0°54′30.0″W / 52.136611°N 0.908333°W / 52.136611; -0.908333 (16–20. Stoke Bruerne Locks)
21 Cosgrove Lock -3’ 4” 52°04′22.8″N 0°50′29.7″W / 52.073000°N 0.841583°W / 52.073000; -0.841583 (21. Cosgrove Lock)
22 Fenny Stratford Lock +1’ 1” 52°00′02.7″N 0°42′51.6″W / 52.000750°N 0.714333°W / 52.000750; -0.714333 (22. Fenny Stratford Lock)
23 Stoke Hammond Lock +6’ 11” 51°57′40.8″N 0°42′39.3″W / 51.961333°N 0.710917°W / 51.961333; -0.710917 (23. Stoke Hammond Lock)
24 – 26 Soulbury Three Locks +20’ 3” 51°56′49.0″N 0°42′16.2″W / 51.946944°N 0.704500°W / 51.946944; -0.704500 (24–26. Soulbury Three Locks)
27 Leighton Lock +6’ 8” 51°55′36.8″N 0°39′54.1″W / 51.926889°N 0.665028°W / 51.926889; -0.665028 (27. Leighton Lock)
28 Grove Lock +7’ 6” 51°53′53.5″N 0°40′17.0″W / 51.898194°N 0.671389°W / 51.898194; -0.671389 (28. Grove Lock)
29 Church Lock +6’ 9” 51°53′35.6″N 0°39′44.9″W / 51.893222°N 0.662472°W / 51.893222; -0.662472 (29. Church Lock)
30 Slapton Lock +7’ 1” 51°52′23.8″N 0°39′08.0″W / 51.873278°N 0.652222°W / 51.873278; -0.652222 (30. Slapton Lock)
31 Horton Lock +6’ 9” 51°52′00.1″N 0°38′55.1″W / 51.866694°N 0.648639°W / 51.866694; -0.648639 (31. Horton Lock)
32 – 33 Ivinghoe Locks +14’ 3” 51°51′26.7″N 0°38′48.0″W / 51.857417°N 0.646667°W / 51.857417; -0.646667 (32–33. Ivinghoe Locks)
34 – 36 Seabrook Locks +20’ 4” 51°50′45.6″N 0°38′38.5″W / 51.846000°N 0.644028°W / 51.846000; -0.644028 (34–36. Seabrook Locks)
37 – 38 Marsworth Locks +14’ 4” 51°49′42.2″N 0°39′39.1″W / 51.828389°N 0.660861°W / 51.828389; -0.660861 (37–38. Marsworth Locks) 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 / 51.815889°N 0.654250°W / 51.815889; -0.654250 (39–45. Marsworth Locks) Bulbourne, summit, 473 feet (144 metres) above Thames Locks.
46 Cowroast Lock -6’ 0” 51°47′01.0″N 0°36′44.3″W / 51.783611°N 0.612306°W / 51.783611; -0.612306 (46. Cowroast Lock) 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 / 51.779611°N 0.605028°W / 51.779611; -0.605028 (47–48. Dudswell Locks)
49 Northchurch Lock -26’ 11” 51°46′16.6″N 0°35′19.0″W / 51.771278°N 0.588611°W / 51.771278; -0.588611 (49. Northchurch Lock) Northchurch Locks
50 Bushes Lock 51°46′03.6″N 0°34′56.2″W / 51.767667°N 0.582278°W / 51.767667; -0.582278 (50. Bushes Lock)
51 Gas 1 Lock 51°45′55.4″N 0°34′23.5″W / 51.765389°N 0.573194°W / 51.765389; -0.573194 (51. Gas 1 Lock)
52 Gas 2 Lock 51°45′53.4″N 0°34′17.8″W / 51.764833°N 0.571611°W / 51.764833; -0.571611 (52. Gas 2 Lock)
53 Berkhamsted Lock -16’ 10” 51°45′44.6″N 0°33′50.5″W / 51.762389°N 0.564028°W / 51.762389; -0.564028 (53. Berkhamsted Lock) Berkhamsted Locks
54 Ravens Lock 51°45′37.2″N 0°33′26.1″W / 51.760333°N 0.557250°W / 51.760333; -0.557250 (54. Ravens Lock)
55 Rising Sun Lock 51°45′33.0″N 0°33′22.6″W / 51.759167°N 0.556278°W / 51.759167; -0.556278 (55. Rising Sun Lock)
56 Top Side Lock -19’ 4” 51°45′18.4″N 0°32′40.7″W / 51.755111°N 0.544639°W / 51.755111; -0.544639 (56. Top Side Lock) Bourne End Locks
57 Bottom Side Lock 51°45′09.0″N 0°32′22.8″W / 51.752500°N 0.539667°W / 51.752500; -0.539667 (57. Bottom Side Lock)
58 Sewer Lock 51°45′03.2″N 0°32′03.7″W / 51.750889°N 0.534361°W / 51.750889; -0.534361 (58. Sewer Lock)
59 Bourne End Bottom Lock -7’ 4” 51°44′50.6″N 0°31′24.5″W / 51.747389°N 0.523472°W / 51.747389; -0.523472 (59. Bourne End Bottom Lock)
60 Winkwell Lock -13’ 7” 51°44′50.6″N 0°31′24.6″W / 51.747389°N 0.523500°W / 51.747389; -0.523500 (60. Winkwell Lock)
61 Winkwell Bottom Lock 51°44′47.1″N 0°30′44.6″W / 51.746417°N 0.512389°W / 51.746417; -0.512389 (61. Winkwell Bottom Lock)
62 Boxmoor Top Lock -6’ 8” 51°44′42.1″N 0°30′02.7″W / 51.745028°N 0.500750°W / 51.745028; -0.500750 (62. Boxmoor Top Lock)
63 Fishery Lock -7’ 1” 51°44′39.1″N 0°29′29.6″W / 51.744194°N 0.491556°W / 51.744194; -0.491556 (63. Fishery Lock)
64 Boxmoor Lock -7’ 1” 51°44′35.2″N 0°28′34.1″W / 51.743111°N 0.476139°W / 51.743111; -0.476139 (64. Boxmoor Lock)
65 – 67 Apsley Locks -16’ 0” 51°44′10.7″N 0°27′49.5″W / 51.736306°N 0.463750°W / 51.736306; -0.463750 (65–67. Apsley Locks)
68 Nash Mills Lock -12’ 2” 51°43′46.9″N 0°27′13.7″W / 51.729694°N 0.453806°W / 51.729694; -0.453806 (68. Nash Mills Lock) Nash Mills Locks
69 Red Lion Lock 51°43′40.1″N 0°27′09.4″W / 51.727806°N 0.452611°W / 51.727806; -0.452611 (69. Red Lion Lock)
69A Kings Langley Lock -8’ 9” 51°42′50.5″N 0°26′40.0″W / 51.714028°N 0.444444°W / 51.714028; -0.444444 (69A. Kings Langley Lock)
70 Home Park Lock -5’ 2” 51°42′25.2″N 0°26′31.0″W / 51.707000°N 0.441944°W / 51.707000; -0.441944 (70. Home Park Lock)
71 North Grove Lock -6' 11" 51°41′58.2″N 0°26′19.9″W / 51.699500°N 0.438861°W / 51.699500; -0.438861 (71. North Grove Lock)
72 – 73 Hunton Bridge Locks -11’ 2” 51°41′26.1″N 0°26′05.6″W / 51.690583°N 0.434889°W / 51.690583; -0.434889 (72–73. Hunton Bridge Locks)
74 Lady Capel's Lock -5’ 4” 51°40′52.7″N 0°25′53.6″W / 51.681306°N 0.431556°W / 51.681306; -0.431556 (74. Lady Capel's Lock)
75 – 76 Cassiobury Park Locks -10’ 0” 51°40′19.6″N 0°25′35.1″W / 51.672111°N 0.426417°W / 51.672111; -0.426417 (75–76. Cassiobury Park Locks)
77 Iron Bridge Lock -9’ 4” 51°39′51.7″N 0°25′36.6″W / 51.664361°N 0.426833°W / 51.664361; -0.426833 (77. Iron Bridge Lock)
78 Cassio Bridge Lock -9’ 0” 51°39′16.2″N 0°25′39.5″W / 51.654500°N 0.427639°W / 51.654500; -0.427639 (78. Cassio Bridge Lock)
79 Common Moor Lock -9’ 5” 51°38′43.1″N 0°26′19.2″W / 51.645306°N 0.438667°W / 51.645306; -0.438667 (79. Common Moor Lock)
80 Lot Mead Lock -6’ 3” 51°38′17.0″N 0°27′03.4″W / 51.638056°N 0.450944°W / 51.638056; -0.450944 (80. Lot Mead Lock)
81 Batchworth Lock -6’ 8” 51°38′05.7″N 0°27′58.8″W / 51.634917°N 0.466333°W / 51.634917; -0.466333 (81. Batchworth Lock)
82 Stocker's Lock -5’ 2” 51°37′48.3″N 0°28′52.4″W / 51.630083°N 0.481222°W / 51.630083; -0.481222 (82. Stocker's Lock)
83 Springwell Lock -7’ 11” 51°37′32.0″N 0°29′40.9″W / 51.625556°N 0.494694°W / 51.625556; -0.494694 (83. Springwell Lock)
84 Copper Mill Lock -5’ 10” 51°36′38.9″N 0°29′54.3″W / 51.610806°N 0.498417°W / 51.610806; -0.498417 (84. Copper Mill Lock)
85 Black Jack's Lock -3’ 8” 51°36′09.0″N 0°29′43.2″W / 51.602500°N 0.495333°W / 51.602500; -0.495333 (85. Black Jack's Lock)
86 Widewater Lock -8’ 0” 51°35′15.4″N 0°29′09.8″W / 51.587611°N 0.486056°W / 51.587611; -0.486056 (86. Widewater Lock)
87 Denham Deep Lock -11’ 1” 51°33′55.1″N 0°28′56.0″W / 51.565306°N 0.482222°W / 51.565306; -0.482222 (87. Denham Deep Lock)
88 Uxbridge Lock -4’ 7” 51°33′08.6″N 0°29′00.7″W / 51.552389°N 0.483528°W / 51.552389; -0.483528 (88. Uxbridge Lock)
89 Cowley Lock -6’ 6” 51°31′44.1″N 0°29′08.4″W / 51.528917°N 0.485667°W / 51.528917; -0.485667 (89. Cowley Lock) Between Cowley Lock (89) and Norwood Top Lock (90) are: Cowley Peachey 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 / 51.501833°N 0.363167°W / 51.501833; -0.363167 (90. Norwood Top Lock)
91 – 97 Hanwell Locks -53’ 2” 51°30′19.5″N 0°20′50.5″W / 51.505417°N 0.347361°W / 51.505417; -0.347361 (91–97. Hanwell Locks)
98 Osterley Lock -5’ 7” 51°29′48.6″N 0°19′57.6″W / 51.496833°N 0.332667°W / 51.496833; -0.332667 (98. Osterley Lock)
99 Clitheroe's Lock -7’ 7” 51°29′20.3″N 0°19′17.3″W / 51.488972°N 0.321472°W / 51.488972; -0.321472 (99. Clitheroe's Lock)
100 Brentford Gauging Locks -5’ 6” 51°28′59.3″N 0°18′41.7″W / 51.483139°N 0.311583°W / 51.483139; -0.311583 (100. Brentford Gauging Locks)
101 Thames Locks Tidal 51°28′55.8″N 0°18′17.3″W / 51.482167°N 0.304806°W / 51.482167; -0.304806 (101. Thames Locks) Into tidal River Thames

Grand Union Canal branches

See also

References

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