The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
. Its total length is . It is noted for its
sea trout
Sea trout is the common name usually applied to anadromous (sea-run) forms of brown trout (''Salmo trutta''), and is often referred to as ''Salmo trutta'' morpha ''trutta''. Other names for anadromous brown trout are sewin (Wales), peel or peal ...
and
salmon
Salmon () is the common name for several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the family (biology), family Salmonidae, which are native to tributary, tributaries of the ...
fishing.
Route
The Towy rises within of the source of the
River Teifi
, name_etymology =
, image = File:Llyn Teifi - geograph.org.uk - 41773.jpg
, image_size =
, image_caption = Llyn Teifi, the source of the Teifi
, map =
, map_size =
, map_caption ...
on the lower slopes of Crug Gynan in the
Cambrian Mountains
The Cambrian Mountains ( cy, Mynyddoedd Cambria, in a narrower sense: ''Elenydd'') are a series of mountain ranges in Wales.
The term ''Cambrian Mountains'' used to apply to most of the upland of Wales. Since the 1950s, its application has becom ...
. Flowing through the steep hills of the Tywi Forest, it forms the boundary between
Ceredigion
Ceredigion ( , , ) is a county in the west of Wales, corresponding to the historic county of Cardiganshire. During the second half of the first millennium Ceredigion was a minor kingdom. It has been administered as a county since 1282. Cere ...
and
Powys
Powys (; ) is a Local government in Wales#Principal areas, county and Preserved counties of Wales, preserved county in Wales. It is named after the Kingdom of Powys which was a Welsh succession of states, successor state, petty kingdom and princi ...
. The river flows generally south-westwards through
Carmarthenshire
Carmarthenshire ( cy, Sir Gaerfyrddin; or informally ') is a county in the south-west of Wales. The three largest towns are Llanelli, Carmarthen and Ammanford. Carmarthen is the county town and administrative centre. The county is known as ...
, passing through the towns of
Llandovery
Llandovery (; cy, Llanymddyfri ) is a market town and community in Carmarthenshire, Wales. It lies on the River Tywi and at the junction of the A40 and A483 roads, about north-east of Carmarthen, north of Swansea and west of Brecon.
Histo ...
and
Llandeilo
Llandeilo () is a town and community in Carmarthenshire, Wales, situated at the crossing of the River Towy by the A483 on a 19th-century stone bridge. Its population was 1,795 at the 2011 Census. It is adjacent to the westernmost point of the B ...
.
Its total length is . with numerous tributaries that include the
Cothi,
Gwili, Brân, and Doethie.
["First Water Resources Survey : Report", South West Wales River Authority (1970), pg. 41; Table 1.]
In
Carmarthen
Carmarthen (, RP: ; cy, Caerfyrddin , "Merlin's fort" or "Sea-town fort") is the county town of Carmarthenshire and a community in Wales, lying on the River Towy. north of its estuary in Carmarthen Bay. The population was 14,185 in 2011, ...
, it is joined by a substantial
tributary
A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...
, the
Afon Gwili
: ''For the river which flows into the River Loughor see Afon Gwili (Loughor)''
The River Gwili ( cy, Afon Gwili) in Carmarthenshire, is a tributary of the River Tywi, the longest river entirely in Wales. Its headwater is found east of Llanllawdd ...
, at
Abergwili
Abergwili () is a village and community in Carmarthenshire, Wales, near the confluence of the rivers Towy and Gwili, close to the town of Carmarthen. It is also an electoral ward. The community includes the settlements of Peniel, Llanfihangel- ...
. The
estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environment ...
meets
Carmarthen Bay
Carmarthen Bay ( cy, Bae Caerfyrddin) is an inlet of the South Wales coast, including notable beaches such as Pendine Sands and Cefn Sidan sands. Carmarthen Bay is partially within the Pembrokeshire Coast National Park. The Joint Nature Conserva ...
east of the
Pendine Sands
Pendine Sands ( cy, Traeth Pentywyn) is a beach on the shores of Carmarthen Bay on the south coast of Wales. It stretches west to east from Gilman Point to Laugharne Sands. The village of Pendine ( cy, Pentywyn, link=no) is close to the wester ...
along with the
River Taf
The River Taf ( cy, Afon Taf) is a river in West Wales. It rises in the Preseli Hills, Pembrokeshire, and continues through Carmarthenshire to Laugharne. It is one of the three rivers to enter the sea on the east side of Carmarthen Bay. The oth ...
and both branches of the
River Gwendraeth
The River Gwendraeth ( cy, Afon Gwendraeth) is a river in Carmarthenshire in West Wales.
It has two almost equal branches that have their confluence in their joint estuary at Carmarthen Bay. The Gwendraeth Fawr (''large Gwendraeth'' in English la ...
. The estuary was guarded by
Llansteffan Castle
Llansteffan Castle ( cy, Castell Llansteffan) is a privately owned castle in Llansteffan, Carmarthenshire, Wales, overlooking the River Tywi estuary in Carmarthen Bay.
Iron Age
The castle sits on a much older Iron Age promontory fort, prov ...
, a 12th-century
Norman
Norman or Normans may refer to:
Ethnic and cultural identity
* The Normans, a people partly descended from Norse Vikings who settled in the territory of Normandy in France in the 10th and 11th centuries
** People or things connected with the Norm ...
castle.
Damming of the Towy
About from its source, the swift flow of the Towy is interrupted by the
Llyn Brianne
Llyn Brianne is a man-made lake or reservoir in the headwaters of the River Tywi in Wales.
Construction
The reservoir was constructed by Wimpey Construction in the late 1960s and early 1970s in order to regulate the flow in the Tywi to supp ...
reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation.
Reservoirs can be created in a number of ways, including contro ...
, created in 1972 by
dam
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, a ...
ming a section of the river to store winter rain for release into the river during dry periods. The reservoir supports the new abstraction at
Nantgaredig
Nantgaredig is a village in Carmarthenshire, Wales. It is about east of the county town of Carmarthen on the A40 in the parish of Llanegwad.
the Population was around 524 as of the 2011 census.
Notable people
The village is most notable for b ...
which supplies a large swathe of south-east
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
with
drinking water
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, a ...
. The flow in the River Towy would have been unable to sustain such an abstraction were it not for the release of water from the upland reservoir.
Ecology
Fish
The Towy is a national draw for big
sea trout
Sea trout is the common name usually applied to anadromous (sea-run) forms of brown trout (''Salmo trutta''), and is often referred to as ''Salmo trutta'' morpha ''trutta''. Other names for anadromous brown trout are sewin (Wales), peel or peal ...
(local name ''sewin''), the seagoing form of the brown trout, ''
Salmo trutta
The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morph ...
''. These fish enter the river each spring and early summer to breed in the tributaries. The river is thought to produce more double-figure (10 lbs plus, or about 5 kg or more) sea trout than any other in Britain. Anglers and estuary netsmen have taken these fish to over in weight. In summer and autumn there is also a substantial run of Atlantic salmon (''
Salmo salar
The Atlantic salmon (''Salmo salar'') is a species of ray-finned fish in the family Salmonidae. It is the third largest of the Salmonidae, behind Siberian taimen and Pacific Chinook salmon, growing up to a meter in length. Atlantic salmon are ...
''). In May the Towy has a run of the rare and protected
twaite shad
The twait shad or twaite shad (''Alosa fallax'') is a species of fish in the family Clupeidae. It is found in the eastern Atlantic Ocean and the Mediterranean Sea and is an anadromous fish which lives in the sea but migrates into fresh water to s ...
and
allis shad
The allis shad (''Alosa alosa'') is a widespread Northeast Atlantic species of fish in the Clupeidae, herring family, Clupeidae. It is an Fish migration, anadromous fish which migrates into fresh water to spawn. It is found in the eastern Atlan ...
. The Towy also contains brown trout, eels, pike, and a variety of small fish species, and is home to brook lampreys, river lampreys and sea lampreys.
The Towy has the distinction of having accidentally produced by far the biggest fish ever taken on rod and line in fresh water in Britain. This was a
sturgeon
Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretace ...
(''Acipwienser sturio'') weighing 388 lb (176 kg) and in length which was caught in the river near Nantgaredig by Alec Allen on 28 July 1932.
Mammals
The Towy has a thriving population of
otters
Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic, aquatic, or marine, with diets based on fish and invertebrates. Lutrinae is a branch of the Mustelidae family, which also includes wea ...
, as well as many commoner mammal species.
Grey seal
The grey seal (''Halichoerus grypus'') is found on both shores of the North Atlantic Ocean. In Latin Halichoerus grypus means "hook-nosed sea pig". It is a large seal of the family Phocidae, which are commonly referred to as "true seals" or " ...
s are common in the lower reaches and sometimes penetrate several miles up river in pursuit of sea trout and salmon.
Birds
The Towy and surrounding valley (Dyffryn Tywi) are home to a very large variety of water and wetland birds. Among the more distinctive species found along the river are
sand martin
The sand martin (''Riparia riparia''), also known as the bank swallow (in the Americas), collared sand martin, or common sand martin, is a migratory passerine bird in the swallow family. It has a wide range in summer, embracing practically the w ...
s,
common sandpiper
The common sandpiper (''Actitis hypoleucos'') is a small Palearctic wader. This bird and its American sister species, the spotted sandpiper (''A. macularia''), make up the genus ''Actitis''. They are parapatric and replace each other geographic ...
s,
little ringed plover
The little ringed plover (''Charadrius dubius'') is a small plover. The genus name ''Charadrius'' is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives from Ancient Greek ''kharadrios'' a bird found in river ...
s,
dippers
Dippers are members of the genus ''Cinclus'' in the bird family Cinclidae, so-called because of their bobbing or dipping movements. They are unique among passerines for their ability to dive and swim underwater.
Taxonomy
The genus ''Cinclus'' ...
,
kingfishers
Kingfishers are a family, the Alcedinidae, of small to medium-sized, brightly colored birds in the order Coraciiformes. They have a cosmopolitan distribution, with most species found in the tropical regions of Africa, Asia, and Oceania, ...
and
grey wagtail
The grey wagtail (''Motacilla cinerea'') is a member of the wagtail family, Motacillidae, measuring around 18–19 cm overall length. The species looks somewhat similar to the yellow wagtail but has the yellow on its underside restricted t ...
s.
Red kite
The red kite (''Milvus milvus'') is a medium-large bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as eagles, buzzards, and harriers. The species currently breeds in the Western Palearctic region o ...
s and
buzzards
Buzzard is the common name of several species of birds of prey.
''Buteo'' species
* Archer's buzzard (''Buteo archeri'')
* Augur buzzard (''Buteo augur'')
* Broad-winged hawk (''Buteo platypterus'')
* Common buzzard (''Buteo buteo'')
* Eastern b ...
are numerous.
Goosander
The common merganser (North American) or goosander (Eurasian) (''Mergus merganser'') is a large seaduck of rivers and lakes in forested areas of Europe, Asia, and North America. The common merganser eats mainly fish. It nests in holes in trees.
...
s and
cormorants
Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the IOC adopted a consensus taxonomy of seven gen ...
prey on sea trout and salmon.
Plants
The prevalence of
oxbow lake
An oxbow lake is a U-shaped lake or pool that forms when a wide meander of a river is cut off, creating a free-standing body of water. In South Texas, oxbows left by the Rio Grande are called '' resacas''. In Australia, oxbow lakes are call ...
s in the Towy valley provides some spectacular shows through the year. In summer at Bishop's Pond in Abergwili (an oxbow lake formed when the river flooded in 1802) there is a spectacular show of yellow
water lilies
''Water Lilies'' (or ''Nymphéas'', ) is a Serial imagery, series of approximately 250 oil paintings by French Impressionism, Impressionist Claude Monet (1840–1926). The paintings depict his Fondation Monet in Giverny, flower garden at Fond ...
on the pond when the water level drops and
reed sweet-grass
''Glyceria maxima'' (syn. ''G. aquatica'' (L.) Wahlenb.; ''G. spectabilis'' Mert. & W.D.J. Koch; ''Molinia maxima'' Hartm.; ''Poa aquatica'' L.), commonly known as great manna grass, reed mannagrass, reed sweet-grass, and greater sweet-grass is a ...
fringes the edges – a species also found nearby in the
Teifi valley further west in
Pembrokeshire
Pembrokeshire ( ; cy, Sir Benfro ) is a Local government in Wales#Principal areas, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and the rest by sea. The count ...
, in
Gower
Gower ( cy, Gŵyr) or the Gower Peninsula () in southwest Wales, projects towards the Bristol Channel. It is the most westerly part of the historic county of Glamorgan. In 1956, the majority of Gower became the first area in the United Kingdom ...
, in Powys (especially along the
Montgomery Canal
The Montgomery Canal ( cy, Camlas Trefaldwyn), known colloquially as "The Monty", is a partially restored canal in eastern Powys and northwest Shropshire. The canal runs from the Llangollen Canal at Frankton Junction to Newtown via Llanymy ...
), on
Anglesey
Anglesey (; cy, (Ynys) Môn ) is an island off the north-west coast of Wales. It forms a principal area known as the Isle of Anglesey, that includes Holy Island across the narrow Cymyran Strait and some islets and skerries. Anglesey island ...
and in several sites along the North Wales coast.
Glanrhyd Bridge disaster
On 19 October 1987, three days after the
Great Storm of 1987, four people were killed when a train plunged off Glanrhyd Bridge near Llangadog into the flooded river.
Notes and references
;Notes
;References
External links
Southwest Wales and its Nature ReservesCCW - Protecting Allis Shad
Further reading
* Lillicrap, R. J. ''The Llyn Brianne Dam and the River Towy Scheme''. Llandovery: Llandovery Publications, 1998.
*
{{authority control
Carmarthen Bay
Towy
The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within Wales. Its total length is . It is noted for its sea trout and salmon fishing.
Route
The Towy rises within of the source of the River Teifi on the lower slo ...
Towy
The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within Wales. Its total length is . It is noted for its sea trout and salmon fishing.
Route
The Towy rises within of the source of the River Teifi on the lower slo ...
Towy
The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within Wales. Its total length is . It is noted for its sea trout and salmon fishing.
Route
The Towy rises within of the source of the River Teifi on the lower slo ...
Towy
The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within Wales. Its total length is . It is noted for its sea trout and salmon fishing.
Route
The Towy rises within of the source of the River Teifi on the lower slo ...
Towy
The River Towy ( cy, Afon Tywi, ) is one of the longest rivers flowing entirely within Wales. Its total length is . It is noted for its sea trout and salmon fishing.
Route
The Towy rises within of the source of the River Teifi on the lower slo ...