List of locks on the Kennet and Avon Canal

The Kennet and Avon Canal is a canal in southern England. The name may refer to either the route of the original Kennet and Avon Canal Company, which linked the River Kennet at Newbury to the River Avon at Bath, or to the entire navigation between the River Thames at Reading and the Floating Harbour at Bristol, including the earlier improved river navigations of the River Kennet between Reading and Newbury and the River Avon between Bath and Bristol.

The River Kennet was made navigable to Newbury in 1723, and the River Avon to Bath in 1727. The Kennet and Avon Canal between Newbury and Bath was built between 1794 and 1810 by John Rennie, to convey commercial barges carrying a variety of cargoes. and is 57 miles (92 km) long. The two river navigations and the canal total 87 miles (140 km) in length. The section from Bristol to Bath is the course of the River Avon, which flows through a wide valley and has been made navigable by a series of locks and weirs.

There are a total of 105 locks on the Kennet and Avon Canal from Bristol to the River Thames, including 6 on the navigable section of the River Avon from Bristol to Bath and 9 on the navigable section of the River Kennet to its confluence with the Thames near Reading. The remaining 90 locks lie along the 57 miles (92 km) of canal.

In Bath the canal separates from the river but follows its valley as far as Bradford on Avon. The ornate Bath Locks lead to a stretch through Limpley Stoke valley with few locks. The flight of locks at Devizes, including the Caen Hill Locks, raises the canal to its longest pound, which then ascends the 4 Wooton Rivers locks to the short summit pound which includes the Bruce Tunnel. Pumping stations are used to supply the canal with water. The canal continues through the rural landscape of Wiltshire and Berkshire before joining the River Kennet at Newbury and becoming a navigable river to Reading, where it flows into the River Thames.

In the later 19th century and early 20th century the canal fell into disuse following competition from the Great Western Railway, who owned the canal. Between 1970 and 1990 the canal was restored, largely by volunteers, and today is a popular heritage tourism destination, for boating, canoeing, fishing, walking and cycling. It is also important for wildlife conservation.

Locks

The following list numbers the locks from the River Avon in Bristol to the River Thames. It includes one lock that has been removed (98, Ufton Lock) and two that have been combined to form a single deep lock (8 and 9, now Bath Deep Lock). Travelling from Bristol to Reading, locks 1 to 54 are uphill, and locks 55 to 107 are downhill.

Lock number	Lock name	Grid ref	Listed Building grade	Rise / fall
				imperial	metres
1	Hanham Lock	ST646700	II
2	Keynsham Lock	ST658690		6ft 10in	2.1
3	Swineford Lock	ST691689		4ft 4in	1.3
4	Saltford Lock	ST692679		3ft 10in	1.2
5	Kelston Lock	ST688669		3ft 1in	0.9
6	Weston Lock	ST725648		9 ft 3in	2.8
7	Bath Bottom Lock	ST756643	II	9 ft 3in	2.8
8/9	Bath Deep Lock	ST756643	II	19 ft 5in	5.9
10	Wash House Lock	ST756643	II	8 ft 6in	2.6
11	Abbey View Lock	ST756643	II	9 ft 0in	2.7
12	Pultney Lock	ST756643	II	9 ft 5in	2.9
13	Bath Top Lock	ST756643	II	9 ft 0in	2.7
14	Bradford Lock	ST825602		10 ft 3in	3.1
15	Buckley's Lock	ST900609		8 ft 0in	2.4
16	Barrett's Lock	ST900609		7 ft 10in	2.4
17–21	Seend Locks	ST933613		38 ft 4ins	11.7
22–50	Caen Hill Locks	ST978614	II	237 ft	72.2
51	Wootton Rivers Bottom Lock	SU198629	II	8 ft 0ins	2.4
52	Heathy Close Lock	SU201631		8 ft 1in	2.5
53	Brimslade Lock	SU209634	II	8 ft 0in	2.4
54	Wootton Top Lock	SU212634		8 ft 0in	2.4
	Summit of the canal
55–63	Crofton Locks	SU254622	II	61 ft 0in	18.6
64	Bedwyn Church Lock	SU278641	II	7 ft 11ins	2.4
65	Burnt Mill Lock	SU283649		7 ft 9ins	2.4
66	Potter's Lock	SU288654		7 ft 6ins	2.3
67	Little Bedwyn Lock	SU290659		6 ft 7ins	2.0
68	Oakhill Down Lock	SU299671	II	5 ft 11in	1.8
69	Froxfield Middle Lock	SU301674		6 ft 11in	2.1
70	Froxfield Bottom Lock	SU303676		7 ft 0in	2.1
71	Picketfield Lock	SU315680		7 ft 0in	2.1
72	Cobbler's Lock	SU321684		8 ft 3in	2.5
73	Hungerford Marsh Lock	SU326685		8 ft 1in	2.5
74	Hungerford Lock	SU336687		8 ft 0in	2.4
75	Dun Mill Lock	SU352683	II	5 ft 8in	1.7
76	Wire Lock	SU363681	II	6 ft 10in	2.1
77	Brunsden Lock	SU372676	II	4 ft 11in	1.5
78	Kintbury Lock	SU386671		5 ft 9in	1.7
79	Dreweatt's Lock	SU411673	II	5 ft 9in	1.7
80	Copse Lock	SU416670		6 ft 0in	1.8
81	Hamstead Lock	SU424671	II	6 ft 5in	2.0
82	Benham Lock	SU438665		6 ft 3in	1.9
83	Higg's Lock	SU447667		5 ft 10in	1.8
84	Guyer's Lock	SU453669	II	7 ft 0in	2.1
85	Newbury Lock	SU470671	II	3 ft 6in	1.1
86	Greenham Lock	SU480673		8 ft 11in	2.7
87	Ham Lock	SU487672		4 ft 2in	1.3
88	Bull's Lock	SU499667		5 ft 9in	1.8
89	Widmead Lock	SU508663		3 ft 7in	1.1
90	Monkey Marsh Lock	SU522662		8 ft 8in	2.6
91	Colthrop Lock	SU538663		7 ft 7in	2.3
92	Midgham Lock	SU548662		7 ft 7in	2.3
93	Heale's Lock	SU562663		8 ft 11in	2.7
94	Woolhampton Lock	SU571665		8 ft 11in	2.7
95	Aldermaston Lock	SU601671	II	8 ft 11in	2.7
96	Padworth Lock	SU606672		5 ft 1in	1.6
97	Towney Lock	SU610680		9 ft 8in	3.0
98	Site of Ufton Lock (ungated)	SU617686
99	Tyle Mill Lock	SU626691		6 ft 4in	1.9
100	Sulhamstead Lock	SU637698		4 ft 1in	1.2
101	Sheffield Lock	SU648706	II*	2 ft 2in	0.6
102	Garston Lock	SU655707	II*	7 ft 7in	2.3
103	Burghfield Lock	SU674709		7 ft 0in	2.1
104	Southcote Lock	SU693712		5 ft 3in	1.7
105	Fobney Lock	SU705710		7 ft 8 in	2.2
106	County Lock	SU713729		1 ft 2in	0.3
107	Blake's Lock	SU727735		3 ft 6in	1.1