Culham lock from upstream
|Maintained by||Environment Agency|
|Length||39.87 m (130 ft 10 in) |
|Width||5.33 m (17 ft 6 in)|
|Fall||2.41 m (7 ft 11 in)|
|Above sea level||161'|
Culham Lock is a lock on the River Thames in England close to Culham, Oxfordshire. It is on a lock cut to the north of the main stream, which approaches the large village of Sutton Courtenay. The lock was built of stone by the Thames Navigation Commission in 1809.
The associated weirs are on the old course of the river under the massive causeway which separates the millstream from picturesque Sutton Pools. The causeway is very old and was thought to have been built by Saxon labour
The river originally passed close to Sutton Courtenay and under a large mill there. In 1667 occurs the first reference to a pound lock underneath this mill. This had a set of gates beneath the mill floor and included a wide pool at the back of the mill. Consequently it required a very large volume of water to fill it and so incurred a heavy toll. There were complaints to the Thames Navigation Commission in 1772 that the floor of the mill was a great obstruction to navigation. Although it was privately owned, the Commission undertook some improvements in 1789, but complaints persisted on the grounds of inconvenience and high tolls. Finally the Commission's surveyor recommended the new lock with its long cut, and this was completed in 1809. A lock cut bridge was built at the same time.
Access to the lock
The lock can be reached from the road at Sutton Bridge, Oxfordshire or on foot across the fields from Sutton Courtenay.
Reach above the lock
The river follows the cut and turns sharply to the right when it rejoins the main course. A new junction for the Wilts & Berks Canal has been constructed almost opposite the top end of Culham Cut as part of a restoration project. The junction was opened on 30 August 2006, and initially runs for about 150 yd (137m) to a winding hole, but will eventually link to the historic route of the canal to the west of Abingdon.
About halfway along the river on the eastern bank the Swift Ditch rejoins the main stream. This backwater was formerly the main course of the river and is crossed by a footbridge and the ancient Culham Bridge. The Swift Ditch creates Andersey Island, one of the largest islands on the Thames. On the Thames side there is an attractive piece of parkland before Abingdon Bridge. On the opposite side here is the town of Abingdon. After the bricked-up former entrance to the Wilts & Berks Canal there is an iron bridge over the mouth of the River Ock and then the town quayside. The river is crossed by Abingdon Bridge which is divided into two (the part across the main navigation being Burford Bridge) by Nag's Head Island. Beyond this on the Abingdon side is parkland associated with Abingdon Abbey.
There is a rowing club on the reach which is the site of the Abingdon Head race.
The Thames Path follows the eastern bank over Culham Bridge and Andersey Island to Abingdon Lock, where it crosses over to the other side.
|Next crossing upstream||River Thames||Next crossing downstream|
|Abingdon Bridge (road)||Culham Lock bridges||Sutton Bridge (road)|
|Next lock upstream||River Thames||Next lock downstream|
4.15 km (2.58 mi) 
Grid reference: SU507948
4.52 km (2.81 mi)
- Picture of Culham Lock at geograph.org.uk
- "Environment Agency Dimensions of locks on the River Thames". web page. Environmental Agency. 8 November 2012. Retrieved 17 November 2012. Dimensions given in metres
- Fred. S. Thacker The Thames Highway: Volume II Locks and Weirs 1920 - republished 1968 David & Charles
- Grand Opening of Jubilee Junction
- "Environment Agency Distances between locks on the River Thames". web page. Environmental Agency. 19 November 2012. Retrieved 20 November 2012. Distances given in km