Islands in the River Thames

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Template:Short description Template:Use dmy dates Template:Use British English This article lists the islands in the River Thames, or at the mouth of a tributary (marked †), 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 (pronounced today Template:IPAc-en) 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.

Most are natural; others were created by excavation of an additional or replacement navigation channel, such as to provide a shorter route, a cut. Many result from accumulation of gravel, silt, wildfowl dung and plant decay and root strengthening, particularly from willows and other large trees. Unlike other large rivers, all today are considered fixed. All in the reaches below Lechlade have been protected against erosion by various combinations of canalisation of the river, building up with dredged material from the river bed, water reeds, concrete, cement, wood or sheet piling.

List of islands

File:Elmley marshes.jpg
Sheppey - Minster from Elmley Marshes
File:Oliver's Island.jpg
Oliver's Island looking downstream
File:GloversIsle02.JPG
Glover's Island from Richmond Hill
File:Ravens-ait-looking-upstream.jpg
Raven's Ait from Queen's Promenade
File:Platts.JPG
Platts Eyot - Port Hampton
File:Ham Island P1010153.JPG
Ham Island - The Cut
File:Bavin's Gulls on the River Thames at Cliveden Deep (Nancy).JPG
Bavin's Gulls and Cliveden
File:Henley regatta temple island.jpg
Temple Island, Henley

The islands are listed in order upstream from the sea.

Islands from the sea to Thames Head and published size:
Name Area
(acre)
Area
(ha)
References
Isle of Sheppey Script error: No such module "convert". [1]
Two Tree Island† (also known as Leigh Marshes) Script error: No such module "convert".
Canvey Island Script error: No such module "convert". [2][3][4]
Lower Horse Island† on Holehaven† a sandbank of Holehaven Creek, Corringham Script error: No such module "convert".
Upper Horse Island 1.97 0.8
Chiswick Eyot, Chiswick Script error: No such module "convert". [5]
Oliver's Island, Strand-on-the-Green Script error: No such module "convert". [6]
Brentford Ait, Brentford Script error: No such module "convert". [7]
Lot's Ait, Brentford Script error: No such module "convert". [7]
Isleworth Ait, Isleworth Script error: No such module "convert". [8]
Corporation Island, Richmond Script error: No such module "convert". [9]
Glover's Island, Twickenham Script error: No such module "convert". [10]
Eel Pie Island, Twickenham Script error: No such module "convert". [11]
Swan Island, Twickenham Script error: No such module "convert". [12]
Trowlock Island, Teddington Script error: No such module "convert".
Steven's Eyot, Kingston upon Thames Script error: No such module "convert".
Raven's Ait, Surbiton Script error: No such module "convert". [13]
Boyle Farm Island, Thames Ditton Script error: No such module "convert". [14]
Thames Ditton Island, Thames Ditton Script error: No such module "convert". [14]
Ash Island, East Molesey Script error: No such module "convert". [15]
Tagg's Island, Hampton Script error: No such module "convert". [15]
Garrick's Ait, Hampton Script error: No such module "convert". [16][17]
Benn's Island, Hampton Script error: No such module "convert". [9]
Platts Eyot, Hampton Script error: No such module "convert". [18]
Grand Junction Isle, Sunbury Script error: No such module "convert". [18]
Sunbury Court Island, Sunbury Script error: No such module "convert". [19]
Rivermead Island, Sunbury Script error: No such module "convert". [20]
Sunbury Lock Ait, Walton on Thames Script error: No such module "convert". [21]
Wheatley's Ait, Sunbury-on-Thames (also known as Wheatleys Eyot) Script error: No such module "convert". [22]
Desborough Island, Walton-on-Thames Script error: No such module "convert". [23]
D'Oyly Carte Island, Weybridge Script error: No such module "convert". [24]
Lock Island, Shepperton Script error: No such module "convert". [24]
Hamhaugh Island, Shepperton Script error: No such module "convert". [24]
Pharaoh's Island, Shepperton Script error: No such module "convert". [24][25]
Laleham Burway including Abbey Mead, Chertsey Script error: No such module "convert".
Penton Hook Island, Laleham Script error: No such module "convert". [26]
Truss's Island, Thorpe Script error: No such module "convert".
Church Island, Staines-upon-Thames Script error: No such module "convert". [27]
Hollyhock Island with Holm Island, Staines-upon-Thames Script error: No such module "convert". [27]
The Island (formerly marsh), Hythe End Script error: No such module "convert". [27]
Magna Carta Island, Runnymede Script error: No such module "convert". [27]
Pats Croft Eyot, Runnymede Script error: No such module "convert". [27][28]
The Island, Wraysbury Script error: No such module "convert". [27][29]
Friary Island, Wraysbury Script error: No such module "convert". [30][31]
Friday Island, Old Windsor Script error: No such module "convert". [30]
Ham Island, Old Windsor Script error: No such module "convert".
Lion Island, Old Windsor Script error: No such module "convert".
Sumptermead Ait, Datchet Script error: No such module "convert".
Black Potts Ait, Windsor Script error: No such module "convert". [32]
Romney Island, Windsor Script error: No such module "convert". [32][33]
Cutlers Ait, Windsor Script error: No such module "convert". [32]
Firework Ait, Windsor Script error: No such module "convert". [34]
Jacob's Island, Windsor Script error: No such module "convert". [35]
Deadwater Ait, Windsor Script error: No such module "convert". [32]
Baths Island, Eton Wick Script error: No such module "convert". [32]
Bush Ait, Windsor Script error: No such module "convert". [32]
Queen's Eyot, Dorney Script error: No such module "convert".
Monkey Island, Bray Script error: No such module "convert". [36]
Pigeonhill Eyot, Bray Script error: No such module "convert". [36]
Headpile Eyot, Bray Script error: No such module "convert". [36]
Guards Club Island, Maidenhead (also known as Bucks Ait) Script error: No such module "convert". [36]
Bridge Eyot, Maidenhead Script error: No such module "convert". [36]
Grass Eyot, Maidenhead Script error: No such module "convert". [36]
Ray Mill Island, Maidenhead Script error: No such module "convert". [36][37]
Boulter's Island or Boulter's Lock Island, Maidenhead Script error: No such module "convert". [36]
Glen Island, Maidenhead Script error: No such module "convert". [36]
Bavin's Gulls, Maidenhead (also known as Sloe Grove Islands) Script error: No such module "convert". [38]
Formosa including manmade Mill and Sashes Islands, Cookham Script error: No such module "convert". [36]
Sheriff Island, Marlow Script error: No such module "convert". [36]
Gibraltar Islands, Marlow Script error: No such module "convert". [36]
Temple Mill Island, Hurley Script error: No such module "convert". [36]
Frog Mill Ait, Hurley Script error: No such module "convert". [39]
Black Boy Island, Hurley Script error: No such module "convert". [39][40]
Magpie Island, Medmenham Script error: No such module "convert". [41][39]
Hambleden Mill island Script error: No such module "convert". [42]
Temple Island, Remenham Script error: No such module "convert". [43]
Rod Eyot, Henley-on-Thames Script error: No such module "convert". [43]
Ferry Eyot, Harpsden Script error: No such module "convert". [43]
Poplar Eyot, Wargrave Script error: No such module "convert". [43]
Handbuck Eyot, Wargrave Script error: No such module "convert". [43]
Unnamed Eyot, Wargrave Script error: No such module "convert". [43]
Shiplake railway bridge island Script error: No such module "convert". [43]
Shiplake weir island Script error: No such module "convert". [43]
Phillimore Island, Charvil Script error: No such module "convert". [43]
The Lynch, Lower Shiplake Script error: No such module "convert". [43]
Hallsmead Ait, Lower Shiplake Script error: No such module "convert". [43][44]
Buck Ait, Sonning Script error: No such module "convert". [45]
Long Ait, Sonning Script error: No such module "convert". [43]
Sonning Eye, Sonning including Aberlash House island Script error: No such module "convert". [43]
Sonning Hill island, Sonning Script error: No such module "convert". [43]
Sonning Marsh, Caversham Lakes Island Script error: No such module "convert". [43]
Heron Island, Reading Script error: No such module "convert". [43][46]
View Island, Reading Script error: No such module "convert". [43][47]
De Bohun Island, Reading Script error: No such module "convert". [43]
Fry's Island, Reading (also known as De Montfort Island) Script error: No such module "convert". [43]
Pipers Island, Reading Script error: No such module "convert". [43]
St Mary's Island and the Lower Large, Reading Script error: No such module "convert". [43][48]
Appletree Eyot, Tilehurst Script error: No such module "convert". [43]
Poplar Island, Tilehurst Script error: No such module "convert". [43]
Mapledurham Mill Island Script error: No such module "convert". [43]
Whitchurch Mill Greater Island Script error: No such module "convert". [43]
Lower Basildon marsh island Script error: No such module "convert". [43]
Streatley Mill Greater Island Script error: No such module "convert". [43]
Cleeve Mill lower island, Goring Script error: No such module "convert". [43]
Cleeve Mill island, Goring Script error: No such module "convert". [43]
Cleeve Mill upper island, Goring Script error: No such module "convert". [43]
Cholsey Marsh island Script error: No such module "convert". [9][49][43]
Crowmarsh Mill Island Script error: No such module "convert". [43]
Little Wittenham Footbridge Island Script error: No such module "convert". [43]
Clifton Cut Island Script error: No such module "convert". [50]
Long Wittenham Backwater Island Script error: No such module "convert". [50]
Culham Cut Island Script error: No such module "convert". [50]
Sutton Pools Island, Sutton Courtney Script error: No such module "convert". [50]
Nag's Head Island, Abingdon Script error: No such module "convert". [50]
Andersey Island, Abingdon Script error: No such module "convert". [50]
Tiger Island (opposite the Abbey Grounds), Abingdon Script error: No such module "convert". [50]
Lock Wood Island, Nuneham Courtenay Script error: No such module "convert". [50]
Fiddler's Elbow, Sandford-on-Thames Script error: No such module "convert". [50][51]
Fidder's Elbow far northern section Script error: No such module "convert".
Swan Inn, Rose, Kennington or St Michael Isle, Kennington Script error: No such module "convert". [50]
Folly Island, Folly Bridge, Oxford Script error: No such module "convert". [52]
Osney Island, Oxford Script error: No such module "convert". [53][50]
Fiddler's Island, Oxford Script error: No such module "convert". [50]
Godstow Bridge Island Script error: No such module "convert". [50]
King's Lock Island Script error: No such module "convert". [50]
Pinkhill Lock Island Script error: No such module "convert". [9][50]
Shifford Cut Island, Chimney Meadows, Chimney, Oxfordshire Script error: No such module "convert". [50]
Radcot Bridge Lower Island, Radcot Script error: No such module "convert". [54]
Radcot Bridge Upper Island, Radcot Script error: No such module "convert". [54]
Swan Hotel Island, Radcot Script error: No such module "convert". [54]
St Mary's Mead, Buscot Script error: No such module "convert". [54]
St John's Bridge Island, Lechlade (borders Buscot) Script error: No such module "convert". [54]
Northern meadow, Castle Eaton Script error: No such module "convert". [54]
Cricklade north-east meadow Script error: No such module "convert". [54]
Island between High and Oaklake bridges†, Ashton Keynes Script error: No such module "convert". [54]
Manor stream island, Somerford Keynes and Kemble Script error: No such module "convert". [54]

List of former islands

Beyond the alluvium/silts of the estuary, by the English Channel and North Sea

Oxford floodplain

In the Oxford area the river splits into several streams across the floodplain, which create numerous islands. On the right bank a large island is created by Seacourt Stream, Botley Stream and Bulstake Stream, and there are smaller islands, including the large mainly built-up island now known as Osney, created by streams between Bulstake Stream and the Thames, including Osney Ditch. The Oxford suburbs of Grandpont and New Hinksey are on an island created by Bulstake Stream, Hinksey Stream and Weirs Mill Stream. Iffley Meadows is an island west of Iffley Lock, between Weirs Mill Stream, Hinksey Stream and the Thames.

On the left bank Fiddler's Island followed downstream by the built-up island historically known as Osney lie between Castle Mill Stream and the Thames. Cripley Meadow is also on an island formed by Fiddler's Island Stream, Castle Mill Stream and Sheepwash Channel.

Eton and Dorney

The status of Eton, Berkshire combined with Dorney is controversial. These are two mainly pre-1900-built small villages and their outlying localities: Eton Wick, Boveney and Dorney Reach. Much of these areas of land in the 19th century was marked by the Ordnance Survey "liable to floods" which led to pressure on authorities for flood protection, along with the more densely populated right bank.

They have been, since 2002, on a more protected man-made island formed by the Jubilee River, which is sometimes seen as an advanced flood relief channel rather than a channel of the Thames. As the Jubilee River is maintained with flow at all times,Script error: No such module "Unsubst". they may be coming to be accepted by publications as on an island of the Thames, reflecting their objective strict geographical status.

Lock islands

The construction of almost all locks on the Thames involved one or more artificial lock islands separating the lock from the weirs. These may have been created by building an artificial island in the river or by digging an artificial canal to contain the lock and turning the land between that and the river into an island. In many cases the lock island contains the lock keeper's house and can be accessed across the lock gates. Such lock islands are only listed above if they have a specific name of their own: all Thames locks are listed in Locks on the River Thames.

See also

Notes

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  1. See article Isle of Sheppey for source. Its area is Script error: No such module "convert".
  2. See article: Canvey Island for source. Its area is Script error: No such module "convert".
  3. Its land forms the land part of a wider parish, which took in mud flats, saltings and eroded land to the south-east where the river is broad – its scope is stated to be 9055.442 acres per OS 25-inch map of 1898 Ordnance Survey Essex Sheet LXXVII SE revised 1895-1896, published 1898.
  4. http://www.visionofbritain.org.uk/unit/10244250/boundary Template:Webarchive boundary map of Canvey Island parish – Vision of Britain – The University of Portsmouth and others
  5. OS 25-inch map of 1910 Ordnance Survey Surrey II.10 revised 1910, published 1913.
  6. OS 25-inch map of 1896 Ordnance Survey London LXXXIV published 1897.
  7. a b OS 25-inch map of 1910 Ordnance Survey London sheet LXXXIV revised 1891-94, published 1897.
  8. OS 25-inch map of 1910 Ordnance Survey London sheet XCVI revised 1891-94, published 1897.
  9. a b c d approx.
  10. OS 25-inch map of 1894 Ordnance Survey London CXXII repeated on sheet CX published 1897.
  11. OS 25-inch map of 1894, Surrey sheet VI.7 revised 1893-1894, published 1898.
  12. OS 25-inch map of 1894 Ordnance Survey London CXXII published 1897.
  13. OS 25-inch map of 1894, Middlesex sheet XXV.12 revised 1893-1894, published 1898.
  14. a b OS 25-inch map of 1895, Surrey sheet XII.7 revised 1895, published 1897.
  15. a b OS 25-inch map of 1894 Ordnance Survey London CXXXIX published 1897.
  16. Script error: No such module "citation/CS1".
  17. OS 25-inch map of 1894 Surrey sheet VI.14 published 1897. Ordnance Survey
  18. a b OS 25-inch map of 1894-5 Middlesex sheets XXV.6 & 10 published 1896
  19. OS 25-inch map of 1893-4 Surrey sheet VI13 published 1896. Ordnance Survey. C. Measured as 2.464 by own research using online map tools; as east end sheared off rest slightly extended
  20. Actual measurement. Compares to broader island OS 25-inch-to-mile map of Middlesex of 1912, sheet XXV.9 in four parcels, total Script error: No such module "convert".. Published 1915.
  21. OS 25-inch-to-mile map of Middlesex of 1912, sheet XXV.9 in four parcels, total Script error: No such module "convert".. Published 1915.
  22. OS 25-inch-to-mile map of Middlesex of 1912, sheet XXV.9, published 1915.
  23. approx
  24. a b c d OS 25-inch-to-mile map of Surrey of 1894, sheet XI.7 published 1896.
  25. Since this source island has been made thinner to south-west to obstruct less of the main flow of the river, stated acreage reference number Shepperton: 226, measuring Script error: No such module "convert"., named Dog Ait
  26. OS 25-inch-to-mile map of Surrey of 1912, sheet V.14&15 published 1914
  27. a b c d e f OS 25-inch-to-mile map of Buckinghamshire of 1899, sheet LVIII.8 published 1899
  28. Acreage number 198, Wraysbury
  29. Acreage number 120, Wraysbury
  30. a b No trench visible. No longer an island
  31. OS 25-inch-to-mile map of Surrey of 1912, sheet IV.8 published 1914
  32. a b c d e f OS 25-inch-to-mile map of Buckinghamshire of 1897, sheet LVI.6 published 1899
  33. Romney Island is in three sections as broken by two short side weirs; it also has the long breakwater below Windsor Bridge called The Cobbler
  34. Script error: No such module "convert". at most. This patch of less than six trees is too small to be shown on most maps of Windsor and Eton
  35. Named after Arthur Jacobs http://www.thamesweb.co.uk/windsorpeople/ArthurJacobs.html
  36. a b c d e f g h i j k l m OS 25-inch-to-mile map of Buckinghamshire of 1897, sheet LVII published 1899
  37. Note: Ray Mill Island is fully attached to the bank on one side
  38. three main islands are marked Script error: No such module "convert". from north to south.
  39. a b c OS Map sheet L1.11 of Bucks (county) revised 1897, published 1898.
  40. With Frog Mill Ait, forms archipelago of three, these are the largest two, that to the north measured Script error: No such module "convert".
  41. Formerly two islands plus islet trees to south now all one. Pre-20th century maps show a narrow channel (between these); total published area then excluding filled in area: Script error: No such module "convert".
  42. OS Map sheet L1.6 of Bucks (county) revised 1897, published 1898.
  43. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag OS 25-inch-to-mile map of Oxfordshire of 1897, sheets LIV.5, LVI.13, LVI.14 and LVI1.16 published 1898
  44. Marginally washed away at upper end since last Ordnance Survey out-of-copyright published measurement given
  45. Greatly washed away at upper end since last Ordnance Survey out-of-copyright published measurement given
  46. Heron Island was and island and downstream islet, marsh in 1898; one island below these former two islands was Script error: No such module "convert". and has been given over to the river
  47. Was Script error: No such module "convert". in map cited however has been cut back to raise marshy Script error: No such module "convert". eastern bulk and broaden main channel to south
  48. as to the Lower Large
  49. Former three separate aits merged by in-fill of channels Script error: No such module "convert". per published maps
  50. a b c d e f g h i j k l m n o p OS 25-inch-to-mile map of Oxfordshire of 1897, sheets XLV.16, XXXII.10 and XXXIX.2 published 1898
  51. Fiddler’s Elbow breaks into a 1.956 northern section (broken from the 8.631 remainder) by a minor, weired meandering creek in its northern part)
  52. A small island transected by Abingdon Road that lies between two spans of Folly Bridge.
  53. Note: Osney is given as its narrowest definition; its larger west parts of the city would more than treble this measurement
  54. a b c d e f g h i OS 25-inch-to-mile map of Oxfordshire of 1898, sheets XXXVII.13 published 1899

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