The nine locks achieve a total rise/fall of 61 ft and were built under the supervision of engineer John Rennie.
West of the top lock is the summit of the canal at 450 ft above sea level. Lockage water is taken from Wilton Water to the summit at the western end of the locks by electric pumps and, on occasion, by the restored Crofton Pumping Station.
- Pearson, Michael (2003). Kennet & Avon Middle Thames:Pearson's Canal Companion. Rugby: Central Waterways Supplies. ISBN 0-907864-97-X.
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about Crofton Locks)
- Location map: 51°21’30"N, 1°38’12"W