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.
Marsh Lock is a lock and weir situated on the River Thames in England, about 1 mile upstream of Henley Bridge in Henley-on-Thames, Oxfordshire. The lock is close to the Berkshire bank, but accessed from the Oxfordshire side via two long walkways, the downstream one being near Mill Meadows. The first pound lock was built by the Thames Navigation Commission in 1773.
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.
This article lists the islands in the River Thames, or at the mouth of a tributary, in England. It excludes human-made islands built as part of the building of forty-five two-gate locks which each accompany a weir, and islets subordinate to and forming part of the overall shape of another. The suffix -ey is common across England and Scotland and cognate with ait and meaning island, a term – as ait or eyot – unusually well-preserved on the Thames. A small minority of list entries are referred to as Island, Ait or Eyot and are vestiges, separated by a depression in the land or high-water-level gully.
Shiplake Lock is a lock and weir situated on the River Thames in England between the villages of Shiplake and Lower Shiplake, Oxfordshire. It is just above the points where the River Loddon joins the Thames and Shiplake Railway Bridge crosses the river. The first pound lock was built by the Thames Navigation Commission in 1773.
Cookham Lock is a lock with weirs situated on the River Thames near Cookham, Berkshire, about a half-mile downstream of Cookham Bridge. The lock is set in a lock cut which is one of four streams here and it is surrounded by woods. On one side is Sashes Island and on the other is Mill Island connected to Formosa Island, the largest on the non-tidal Thames.
Phillimore Island is an elongated island in the River Thames in the county of Berkshire, England, near the villages of Shiplake, Oxfordshire and Wargrave, Berkshire. It is on the reach above Shiplake Lock.
Day's Lock is a lock on the River Thames near Dorchester-on-Thames, Oxfordshire, England on the Dorchester side of the river.
Three river islands (aits) form a linear group, close to the junction of the two main old streets of Thames Ditton village, in the River Thames in a corner of modern Surrey, on the Kingston reach above Teddington Lock. Thames Ditton Island, the dominant ait, is 350 yards (320 m) long and has 48 houses with gardens ; Boyle Farm Island has one house; Swan Island, between the two, is the smallest.
Old Windsor Lock is a lock on the River Thames in England on the right bank beside Old Windsor, Berkshire. The lock marks the downstream end of the New Cut, a meander cutoff built in 1822 by the Thames Navigation Commissioners which created Ham Island. The lock and a wider footbridge give access to the island. Two weirs are associated; the smaller adjoins and the larger is upstream. The lock is the ninth lowest of the forty-five on the river.
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.
King's Lock is a lock on the River Thames in England. It is in open country to the north of Oxford, Oxfordshire, on the southern bank of the river. The lock was one of the last pound locks built on the Thames, built by the Thames Conservancy in 1928 to replace the former flash lock. It has the smallest fall of any lock on the river, 0.77 m.
The Lynch is an island in the River Thames in Berkshire, England. It is on the reach above Shiplake Lock near Lower Shiplake.
Hallsmead Ait is an island in the River Thames in Berkshire, England. It is on the reach above Shiplake Lock near Lower Shiplake.
Ferry Eyot or Ferry Ait is an island in the River Thames in England near the villages of Shiplake, Oxfordshire and Wargrave, Berkshire. It is on the reach above Marsh Lock.
St Patrick's Stream or Patrick Stream is a backwater of the River Thames in England, which flows into the River Loddon near Wargrave, Berkshire. It leaves the Thames on the reach above Shiplake Lock near Buck Ait, downstream of Sonning.
Poplar Eyot or Poplar Ait is an island in the River Thames in England near the villages of Shiplake, Oxfordshire and Wargrave, Berkshire. It is on the reach above Marsh Lock.
Benn's Island, previously named Church Eyot, Kember's Eyot and sometimes referred to as Benn's Ait, is a private 0.1-acre (0.040 ha) ait (island) on the River Thames south-west of London. It is among a string of narrow islands above Molesey Lock and due to its clubhouse and size — the second-smallest named island on the Thames — it has deep foundation pilings to raise the building more than 1 m above the water line.
