The Swale is a tidal channel of the

Thames estuary The Thames Estuary is where the River Thames meets the waters of the North Sea, in the south-east of Great Britain. Limits An estuary can be defined according to different criteria (e.g. tidal, geographical, navigational or in terms of salini ...

that separates the

Isle of Sheppey The Isle of Sheppey is an island off the northern coast of Kent, England, neighbouring the Thames Estuary, centred from central London. It has an area of . The island forms part of the local government district of Swale. ''Sheppey'' is deriv ...

from the rest of Kent. On its banks is a biological

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle ...

which stretches from Sittingbourne to Whitstable in

Kent Kent is a county in South East England and one of the home counties. It borders Greater London to the north-west, Surrey to the west and East Sussex to the south-west, and Essex to the north across the estuary of the River Thames; it faces ...

. It is also a

Ramsar Ramsar may refer to: * Places so named: ** Ramsar, Mazandaran, city in Iran ** Ramsar, Rajasthan, village in India * Eponyms of the Iranian city: ** Ramsar Convention concerning wetlands, signed in Ramsar, Iran ** Ramsar site, wetland listed i ...

internationally important wetland site and a

Special Protection Area A Special Protection Area (SPA) is a designation under the European Union Directive on the Conservation of Wild Birds. Under the Directive, Member States of the European Union (EU) have a duty to safeguard the habitats of migratory birds and certa ...

under the

European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are located primarily in Europe, Europe. The union has a total area of ...

Directive on the Conservation of Wild Birds. Parts of it are a

Nature Conservation Review ''A Nature Conservation Review'' is a two-volume work by Derek Ratcliffe, published by Cambridge University Press in 1977. It set out to identify the most important places for nature conservation in Great Britain. It is often known by the initia ...

site, Grade I, National Nature Reserves, a Kent Wildlife Trust nature reserve and a Local Nature Reserve.

History

The name "Swale" is

Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th ...

in origin, and is believed to mean "swirling, rushing river", or "rushing water".

Peri-glacial period

At these times the Swale was a gully from what had been a sea channel in very warm periods. Namely before the

Strait of Dover The Strait of Dover or Dover Strait (french: Pas de Calais - ''Strait of Calais''), is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, separating Great Britain from continent ...

had swept away so much swampy land, accentuated by sea levels being lower, even to beyond the end of the ice age, i.e. in the mid seventh millennium BC, the coasts of

Essex Essex () is a Ceremonial counties of England, county in the East of England. One of the home counties, it borders Suffolk and Cambridgeshire to the north, the North Sea to the east, Hertfordshire to the west, Kent across the estuary of the Riv ...

and

stretched much further into the

North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian ...

. Sheppey formed part of mainland Britain. The Swale was a valley opening eastwards. As sea-levels rose again, water occupied its whole length. It and the very mouth of the

Medway Medway is a unitary authority district and conurbation in Kent, South East England. It had a population of 278,016 in 2019. The unitary authority was formed in 1998 when Rochester-upon-Medway amalgamated with the Borough of Gillingham to ...

divide the Isle of Sheppey from the mainland.

Roman Warm Period

When the Romans arrived in Britain, the Swale was much wider, with one part of the Isle of Sheppey — now called the Isle of Harty or Harty — a separate island.

Former ferries

Two public ferries crossed the Swale. One operated between Oare and Harty, and the other between

Murston Murston is a suburb of Sittingbourne in Kent, England. It is about 1 mile north-east of central Sittingbourne, on the east bank of the Milton Creek. History According to Edward Hasted in 1798, it was once called 'Muston'. The parish contains abo ...

(near Sittingbourne) and Elmley (another former hamlet and essentially attached islet). Harty is no longer separate but the marshlands gradually encroaching delineate it.

Dredging and channel traffic

The channel needs constant dredging for busy recreational and light vessel use.

Bridges

The Swale is crossed at its western end by two bridges: the

Kingsferry Bridge The Kingsferry Bridge is a combined road and railway vertical-lift bridge which connects the Isle of Sheppey to mainland Kent in South East England. The seven-span bridge has a central lifting span which allows ships to pass. In 1860, the firs ...

and the later Sheppey Crossing.

Nature

The Swale forms both a National Nature Reserve and a

: the

eel grass Eelgrass is a common name for several plants and may refer to: * ''Zostera'', marine eelgrass * ''Vallisneria ''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or ...

, Ray's knotgrass, white seakale,

glasswort The glassworts are various succulent, annual halophytic plants, that is, plants that thrive in saline environments, such as seacoasts and salt marshes. The original English glasswort plants belong to the genus '' Salicornia'', but today the gla ...

s and

golden samphire The golden samphire (''Limbarda crithmoides'') is a perennial coastal species, which may be found growing on salt marsh or sea cliffs across western and southern Europe and the Mediterranean. Golden samphire has a tufted habit, and the plant m ...

support rare and uncommon migrant

butterflies Butterflies are insects in the macrolepidopteran clade Rhopalocera from the order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The group comprises ...

and

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

s, including the Essex emerald, the ground lackey, the clouded yellow butterfly and rare

hawk-moth The Sphingidae are a family of moths (Lepidoptera) called sphinx moths, also colloquially known as hawk moths, with many of their caterpillars known as “hornworms”; it includes about 1,450 species. It is best represented in the tropics, bu ...

s. Since 1968, it has also been a

Birds

The Swale provides habitats for the following birds: * Pied avocet at least 17 percent of Great Britain's breeding population *

Marsh harrier The marsh harriers are birds of prey of the harrier subfamily. They are medium-sized raptors and the largest and broadest-winged harriers. Most of them are associated with marshland and dense reedbeds. They are found almost worldwide, excluding ...

at least 15 percent of Great Britain's breeding population *

Mediterranean gull The Mediterranean gull (''Ichthyaetus melanocephalus'') is a small gull. The scientific name is from Ancient Greek. The genus ''Ichthyaetus'' is from ''ikhthus'', "fish", and ''aetos'', "eagle", and the specific ''melanocephalus'' is from ''m ...

* Bar-tailed godwit *

Eurasian golden plover The European golden plover (''Pluvialis apricaria''), also known as the European golden-plover, Eurasian golden plover, or just the golden plover within Europe, is a largish plover. This species is similar to two other golden plovers: the Americ ...

Hen harrier The hen harrier (''Circus cyaneus'') is a bird of prey. It breeds in Eurasia. The term "hen harrier" refers to its former habit of preying on free-ranging fowl. It migrates to more southerly areas in winter. Eurasian birds move to southern Eur ...

Ringed plover The common ringed plover or ringed plover (''Charadrius hiaticula'') is a small plover that breeds in Arctic Eurasia. The genus name ''Charadrius'' is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives fr ...

Black-tailed godwit The black-tailed godwit (''Limosa limosa'') is a large, long-legged, long-billed shorebird first described by Carl Linnaeus in 1758. It is a member of the godwit genus, ''Limosa''. There are four subspecies, all with orange head, neck and ches ...

Grey plover The grey plover or black-bellied plover (''Pluvialis squatarola'') is a large plover breeding in Arctic regions. It is a long-distance migrant, with a nearly worldwide coastal distribution when not breeding. Taxonomy The grey plover was forma ...

knot A knot is an intentional complication in cordage which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a ''hitch'' fastens a rope to another object; a ...

* pintail * Common redshank *

Northern shoveler The northern shoveler (; ''Spatula clypeata''), known simply in Britain as the shoveler, is a common and widespread duck. It breeds in northern areas of Europe and across the Palearctic and across most of North America, wintering in southern ...

References

External links

English Nature pageDescription of Special Protection Area
*Map sources for {{DEFAULTSORT:Swale, The Thames Estuary Channels of England Special Protection Areas in England Sites of Special Scientific Interest in Kent Nature Conservation Review sites The Swale Ramsar sites in England Straits of England National nature reserves in England