The English River Thames is navigable from Cricklade or Lechlade to the sea, and this part of the river falls 71 meters (234 feet). There are 45 locks on the river, each with one or more adjacent weirs. These lock and weir combinations are used for controlling the flow of water down the river, most notably when there is a risk of flooding, and provide for navigation above the tideway.
Teddington Lock is a complex of three locks and a weir on the River Thames between Ham and Teddington in the London Borough of Richmond upon Thames, England. Historically in Middlesex, it was first built in 1810.
Bray Lock is a lock and weir on the River Thames in England near Bray and Dorney Reach, and is just above the M4 Bridge across the Thames. The lock is on the Buckinghamshire side of the river on the opposite bank from Bray itself and Maidenhead which are in Berkshire. Here, the county line stands roughly halfway between the lock and the opposite bank, following the course of the Thames itself. The pound lock was built by the Thames Navigation Commission relatively late, in 1845. The lock keeper's cottage is on an island between the lock and the weir.
Hambleden Lock is a lock with a long weir situated on the River Thames in England, about 2 miles downstream of Henley Bridge. The lock is on the Berkshire bank between Aston and Remenham. Built by the Thames Navigation Commission in 1773, the lock is named after the village of Hambleden, a mile (1.5 km) to the north.
Donnington Bridge is a modern road bridge over the River Thames, in the south of the city of Oxford, England. At this point the river is commonly called the Isis. The bridge carries the B4495 road from Abingdon Road to Iffley Road. It crosses the river on the reach between Iffley Lock and Osney Lock.
Shepperton Lock is a lock on the River Thames, in England by the left bank at Shepperton, Surrey. It is across the river from Weybridge which is nearby linked by a passenger ferry.
The Oxford-Burcot Commission was the first Commission concerned with the management of the River Thames, appointed by an Act of Parliament of 1605 by James I to make the stretch of river from Burcot to Oxford navigable. The Commission took responsibility for the management of the River Thames between Oxford and Burcot. It consisted of 18 members, including a representative each from Oxford city and from the University. However its work was irregular and by 1611 it had ceased altogether.
Molesey Lock is a lock on the River Thames in England at East Molesey, Surrey on the right bank.
Marlow Lock is a lock and weir situated on the River Thames in the town of Marlow, Buckinghamshire, England, about 300m downstream of Marlow Bridge. The first pound lock was built by the Thames Navigation Commission in 1773.
Sunbury Lock is a lock complex of the River Thames in England near Walton-on-Thames in north-west Surrey, the third lowest of forty four on the non-tidal reaches. The complex adjoins the right, southern bank about 1⁄2 mile (0.80 km) downstream of the Weir Hotel.
Chertsey Lock is a lock on the River Thames in England, against the left bank, an area of Green Belt including Laleham Park, the largest public park in Spelthorne. It faces the town of Chertsey and is the fifth-lowest of the forty-four locks along the non-tidal course of the river. Owing to a course alteration both banks at the site of the lock have been since medieval times in Surrey. Stone-built Chertsey Bridge built in 1785 is 210 m south (downstream) of the lock. The lock was built by the City of London Corporation in 1813, lengthened in 1893 and again in 1913.
Bell Weir Lock is a lock on the River Thames in England by the right bank, Runnymede which is a water meadow associated with Egham of importance for the constitutional Magna Carta. It is upstream of the terrace of a hotel and the a bridge designed by Edwin Lutyens who designed an ornamental park gate house along the reach. The bridge has been widened and carries the M25 and A30 road across the river in a single span. The lock was first built by the Thames Navigation Commission in 1817; it has one weir which is upstream. The lock is the eighth lowest of forty-five on the river and is named after the founder of the forerunner of the adjoining hotel who took charge of the lock and weir on its construction.
Romney Lock is a lock on the River Thames in England near Windsor and Eton, about half a mile downstream of Windsor Bridge. It is on the Windsor side of the river next to a boatyard and adjoins Romney Island, a long strip-shaped ait in the middle of the river. The first lock was built by the Thames Navigation Commission in 1798.
Boveney Lock is a lock on the River Thames situated on the Buckinghamshire bank opposite the Windsor Racecourse and close to Eton Wick. Boveney is a village a little way upstream on the same side. The lock was first built in 1838 by the Thames Navigation Commission. The lock was rebuilt in 1898 closer to the Buckinghamshire bank, and a set of boat rollers were installed on the old site.
Cleeve Lock is a lock on the River Thames, in Oxfordshire, England. It is located just upstream of Goring and Streatley villages, on the eastern side of the river within the village of Goring. There was a hamlet of Cleeve, after which the lock is named, but it dropped out of use, as always part of Goring.
Abingdon Lock is a lock on the River Thames in England, less than 1 mile east and upstream of Abingdon, Oxfordshire, on the opposite bank of the river. It was originally built in 1790 by the Thames Navigation Commission.
Sandford Lock is a lock on the River Thames in England, situated at Sandford-on-Thames which is just south of Oxford. The first pound lock was built in 1631 by the Oxford-Burcot Commission although this has since been rebuilt. The lock has the deepest fall of all locks on the Thames at 8 ft 9in (2.69m) and is connected to a large island which is one of three at this point. The lock lies at the end of Church Lane in Sandford on Thames.
Osney Lock is a lock on the River Thames in Oxford, England, where the village or island of Osney is next to the river.
Godstow Lock is a lock on the River Thames in Oxfordshire, England. It is between the villages of Wolvercote and Wytham on the outskirts of Oxford. The first lock was built of stone by Daniel Harris for the Thames Navigation Commission in 1790. It is the lock furthest upstream on the river which has mechanical (electro-hydraulic) operation - every lock upstream of Godstow utilises manual beam operation instead.
The Swift Ditch is a 2 km (1.2 mi) long artificial channel that formed a short-cut for river traffic to and from Oxford, across a meander of the River Thames in England. It was formerly the primary navigation channel. With the main river, it creates Andersey Island on the left bank of the Thames opposite Abingdon-on-Thames. Within a poem published in 1632, the Water Poet John Taylor wrote:
At Abingdon the shoals are worse and worse
That Swift Ditch seems to be the better course
