![Olveston Drainage Rhine - geograph](https://upload.wikimedia.org/wikipedia/commons/3/3e/Olveston_Drainage_Rhine_-_geograph.org.uk_-_381123.jpg)
A rhyne (
Somerset
( en, All The People of Somerset)
, locator_map =
, coordinates =
, region = South West England
, established_date = Ancient
, established_by =
, preceded_by =
, origin =
, lord_lieutenant_office =Lord Lieutenant of Somerset
, lord_ ...
), rhine/rhyne (
Gloucestershire
Gloucestershire ( abbreviated Glos) is a county in South West England. The county comprises part of the Cotswold Hills, part of the flat fertile valley of the River Severn and the entire Forest of Dean.
The county town is the city of Gl ...
), or reen (
South Wales
South Wales ( cy, De Cymru) is a loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the historic counties of Glamorgan and Monmouthshire, south Wales extends westwards ...
) (all pronounced "reen"; from Old English ''ryne'' or
Welsh
Welsh may refer to:
Related to Wales
* Welsh, referring or related to Wales
* Welsh language, a Brittonic Celtic language spoken in Wales
* Welsh people
People
* Welsh (surname)
* Sometimes used as a synonym for the ancient Britons (Celtic peop ...
''rhewyn'' or ''rhewin'' "ditch") is a term used in parts of England and Wales for a
drainage
Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water. The internal drainage of most agricultural soils is good enough to prevent severe waterlogging (anaerobic conditio ...
ditch
A ditch is a small to moderate divot created to channel water. A ditch can be used for drainage, to drain water from low-lying areas, alongside roadways or fields, or to channel water from a more distant source for plant irrigation. Ditches ar ...
, or canal, used to turn areas of
wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...
close to
sea level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised g ...
into useful
pasture
Pasture (from the Latin ''pastus'', past participle of ''pascere'', "to feed") is land used for grazing. Pasture lands in the narrow sense are enclosed tracts of farmland, grazed by domesticated livestock, such as horses, cattle, sheep, or swine ...
.
Water levels (and hence the level of the
water table
The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water. It can also be simply explained as the depth below which the ground is saturated.
T ...
) will usually be controlled by a system of
sluice
Sluice ( ) is a word for a channel controlled at its head by a movable gate which is called a sluice gate. A sluice gate is traditionally a wood or metal barrier sliding in grooves that are set in the sides of the waterway and can be considered ...
gates and pumps, allowing the land to become wetter at times of the year when this will improve grass growth. Rhynes represent an early method of swamp or marsh drainage. Large sections of swampland were surrounded by trenches deep enough to drain the water from the encircled mound and leave the land relatively dry. Regular clearing and dredging is necessary to keep the rhynes clear of debris so that they flow freely.
Rhynes have been used extensively in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
, especially on marshy coastal areas such as the
Somerset Levels
The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendip Hills, Mendips to the Blackdown Hills.
The Somerset Levels have an area of about and are bisected by the Polden Hills; the areas to ...
,
and the
North Somerset Levels
The North Somerset Levels is a coastal plain, an expanse of low-lying flat ground, which occupies an area between Weston-super-Mare and Bristol in North Somerset, England. The River Banwell, River Kenn, River Yeo and Land Yeo are the three prin ...
. Other examples in England exist in the
Framilode
Framilode is a village on the banks of the River Severn in Gloucestershire, England, in the parish of Fretherne with Saul. It consists of two settlements: the larger, Framilode, is at the mouth of the River Frome. The smaller settlement, Fra ...
and
Saul
Saul (; he, , ; , ; ) was, according to the Hebrew Bible, the first monarch of the United Kingdom of Israel. His reign, traditionally placed in the late 11th century BCE, supposedly marked the transition of Israel and Judah from a scattered tri ...
area of Gloucestershire, where they drain into either the
River Severn
, name_etymology =
, image = SevernFromCastleCB.JPG
, image_size = 288
, image_caption = The river seen from Shrewsbury Castle
, map = RiverSevernMap.jpg
, map_size = 288
, map_c ...
or
Sharpness Canal, and the Pilning Levels alongside the
Severn Estuary
The Severn Estuary ( cy, Aber Hafren) is the estuary of the River Severn, flowing into the Bristol Channel between South West England and South Wales. Its high tidal range, approximately , means that it has been at the centre of discussions in t ...
in South Gloucestershire between
Avonmouth
Avonmouth is a port and outer suburb of Bristol, England, facing two rivers: the reinforced north bank of the final stage of the Avon which rises at sources in Wiltshire, Gloucestershire and Somerset; and the eastern shore of the Severn Estuar ...
and
Aust
Aust is a small village in South Gloucestershire, England, about north of Bristol and about south west of Gloucester. It is located on the eastern side of the Severn estuary, close to the eastern end of the Severn Bridge which carries the M48 ...
. In southeast Wales, they can be found on the
Caldicot and Wentloog Levels
The Caldicot and Wentloog Levels are two areas of low-lying estuarine alluvial wetland and intertidal mudflats adjoining the north bank of the Severn Estuary, either side of the River Usk estuary near Newport in south east Wales. They are als ...
. Many of them are still in use today.
Many rhynes in England and Wales are maintained as part of the
water resource management
Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. 97% of the water on the Earth is Saline water, salt water and only three percent is fresh ...
operations of
internal drainage board
An internal drainage board (IDB) is a type of operating authority which is established in areas of special drainage need in England and Wales with permissive powers to undertake work to secure clean water drainage and water level management withi ...
s. The rhynes near
Wembdon
Wembdon is a semi-rural village near Bridgwater, in Somerset, England.
Wembdon is now home to an Anglican church, a small shop (combined with the post office), a pub and a small garage.
History
Wembdon was listed in the Domesday Book of 1086 a ...
village have some early references, including Fichet's rhyne in 1579 and the Great or Wildmarsh rhyne in 1705.
The etymology of the name is unclear. Some sources claim that rhyne is derived from the Irish word ''rathin'', a diminutive of ''rath'' —a circular mound or entrenchment.
[Gill, W. Walter (1929). ''A Manx Scrapbook''. London & Bristol: Arrowsmith. Chapter IV]
''The Parish of German''
/ref>
Gallery
See also
* Ditch
A ditch is a small to moderate divot created to channel water. A ditch can be used for drainage, to drain water from low-lying areas, alongside roadways or fields, or to channel water from a more distant source for plant irrigation. Ditches ar ...
* Water supply and sanitation in England and Wales
Public water supply and sanitation in England and Wales has been characterised by universal access and generally good service quality. Salient features of the sector in the United Kingdom compared to other developed countries is the full priva ...
References
{{Reflist}
Drainage canals
Hydraulic engineering
Water supply and sanitation in England and Wales