A strath is a large

valley A valley is an elongated low area often running between Hill, hills or Mountain, mountains, which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers ...

, typically a river valley that is wide and shallow (as opposed to a

glen A glen is a valley, typically one that is long and bounded by gently sloped concave sides, unlike a ravine, which is deep and bounded by steep slopes. Whittow defines it as a "Scottish term for a deep valley in the Highlands" that is "narrower ...

, which is typically narrower and deep).

Word and etymology

An anglicisation of the

Gaelic Gaelic is an adjective that means "pertaining to the Gaels". As a noun it refers to the group of languages spoken by the Gaels, or to any one of the languages individually. Gaelic languages are spoken in Ireland, Scotland, the Isle of Man, and Ca ...

word ''srath'', it is one of many that have been absorbed into the

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

and Scots languages. It is commonly used in rural Scotland to describe a wide valley, even by non-Gaelic speakers. In Scottish place-names, ''Strath-'' is of Gaelic and

Brittonic Brittonic or Brythonic may refer to: *Common Brittonic, or Brythonic, the Celtic language anciently spoken in Great Britain *Brittonic languages, a branch of the Celtic languages descended from Common Brittonic *Britons (Celtic people) The Br ...

origin. ''Strath-'' names have the genesis with Gaelic ''srath'' meaning "broad-valley", as well as with the

Cumbric Cumbric was a variety of the Common Brittonic language spoken during the Early Middle Ages in the ''Hen Ogledd'' or "Old North" in what is now the counties of Westmorland, Cumberland and northern Lancashire in Northern England and the souther ...

and

Pictish Pictish is the extinct language, extinct Brittonic language spoken by the Picts, the people of eastern and northern Scotland from Late Antiquity to the Early Middle Ages. Virtually no direct attestations of Pictish remain, short of a limited num ...

cognates (c.f.

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 ...

''ystrad''). Gaelic ''srath'' is derived from

Old Irish Old Irish, also called Old Gaelic ( sga, Goídelc, Ogham script: ᚌᚑᚔᚇᚓᚂᚉ; ga, Sean-Ghaeilge; gd, Seann-Ghàidhlig; gv, Shenn Yernish or ), is the oldest form of the Goidelic/Gaelic language for which there are extensive writt ...

''srath'', recorded as having meant "grassland". The modern Scottish Gaelic sense of "broad-valley", paralleling the meaning of Brittonic cognates, developed from substrate influence from Pictish.

Toponymy

It occurs in numerous place names within

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

including

Strathspey Strathspey may refer to one of the following: * Strathspey, Scotland, an area in the Highlands of Scotland * Strathspey Camanachd Strathspey Camanachd is a shinty club based in Grantown-on-Spey, Strathspey, Scotland, currently competing in the ...

and

Strathclyde Strathclyde ( in Gaelic, meaning "strath (valley) of the River Clyde") was one of nine former local government regions of Scotland created in 1975 by the Local Government (Scotland) Act 1973 and abolished in 1996 by the Local Government et ...

. Internationally, many places with Scottish heritage also use the prefix, including Strath-Taieri in

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

; Strathalbyn in South Australia,

Strathfield Strathfield is a suburb in the Inner West of Sydney, in the state of New South Wales, Australia. It is located 12 kilometres west of the Sydney central business district and is the administrative centre of the Municipality of Strathfield. A ...

, a suburb of

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountain ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

;

Strathewen, Victoria Strathewen is a town in Victoria (Australia), Victoria, Australia, 45 km north-east of Melbourne's Melbourne City Centre, Central Business District, located within the Shire of Nillumbik Local government areas of Victoria, local government ...

, Australia;

Strathpine Strathpine is a Suburbs and localities (Australia), suburb in the Moreton Bay Region, Queensland, Australia. In the , Strathpine had a population of 9,503 people. It is home to the Pine Rivers District offices of the Moreton Bay Region, as well ...

, a suburb of

Brisbane Brisbane ( ) is the capital and most populous city of the states and territories of Australia, Australian state of Queensland, and the list of cities in Australia by population, third-most populous city in Australia and Oceania, with a populati ...

, Australia; and various places in

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

Strathmore, Alberta Strathmore is a town located in southern Alberta, Canada that is surrounded by Wheatland County, Alberta, Wheatland County. It is along the Alberta Highway 1, Trans-Canada Highway approximately east of Calgary. History The town began as a ha ...

; Strathcona; Strathroy, Ontario; and Strathburn, Ontario. It also occurs in the names of five

Peninsular and Oriental Steam Navigation Company P&O (in full, The Peninsular and Oriental Steam Navigation Company) is a British shipping and logistics company dating from the early 19th century. Formerly a public company, it was sold to DP World in March 2006 for £3.9 billion. DP World c ...

liners, four of which, the ''Strathaird'', the ''Strathnaver'', the ''Stratheden'' and the ''Strathmore'', carried thousands of migrants to Australia between the 1950s and the 1960s. The ships acted as troop carriers during the

Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

and the fifth ship, the ''Strathallan'', sank in the Mediterranean in 1942 taking troops to the landings in North Africa. The word is related to Welsh ''Ystrad'', as in ''Strat Clut'', the Old Welsh name for the

Kingdom of Strathclyde Strathclyde (lit. "Strath of the River Clyde", and Strað-Clota in Old English), was a Brittonic successor state of the Roman Empire and one of the early medieval kingdoms of the Britons, located in the region the Welsh tribes referred to as Yr ...

. In

Keith Keith may refer to: People and fictional characters * Keith (given name), includes a list of people and fictional characters * Keith (surname) * Keith (singer), American singer James Keefer (born 1949) * Baron Keith, a line of Scottish barons ...

there is a distillery producing the Strathisla whisky. It is a single malt whisky that is also an ingredient to the blend

Chivas Regal Chivas Regal () is a blended Scotch whisky manufactured by Chivas Brothers, which is part of Pernod Ricard. It was founded in 1786, with its home being in the Strathisla distillery at Keith, Moray in Speyside, Scotland, and is the oldest contin ...

In geology

geology Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...

, a strath is a

bedrock In geology, bedrock is solid Rock (geology), rock that lies under loose material (regolith) within the crust (geology), crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface mater ...

surface within a river valley that marks a

base level In geology and geomorphology a base level is the lower limit for an erosion process. The modern term was introduced by John Wesley Powell in 1875. The term was subsequently appropriated by William Morris Davis who used it in his cycle of erosion ...

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...

by the river. This may underlie a contemporary strath valley floor, corresponding to the present base level, but it may also correspond to a former base level now preserved in the

geologic record The geologic record in stratigraphy, paleontology and other natural sciences refers to the entirety of the layers of rock strata. That is, deposits laid down by volcanism or by deposition of sediment derived from weathering detritus (clays, sand ...

. When a river in a strath valley is rejuvenated by a drop in base level, remnants of the former valley floor may be preserved as

strath terrace Fluvial terraces are elongated terraces that flank the sides of floodplains and fluvial valleys all over the world. They consist of a relatively level strip of land, called a "tread", separated from either an adjacent floodplain, other fluvial te ...

s. These may record past climate oscillations or may be a result of river

meander A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank ( cut bank) and deposits sediments on an inner, convex bank ...

ing. If a change in sedimentation rates results in renewed deposition of sediments (

aggradation Aggradation (or alluviation) is the term used in geology for the increase in land elevation, typically in a river system, due to the deposition of sediment. Aggradation occurs in areas in which the supply of sediment is greater than the amount o ...

) in a strath valley, the original strath surface may be buried under fresh sediments and become part of the geologic record. For example, at least three such straths are present in the valley of the

Rio Grande River The Rio Grande ( and ), known in Mexico as the Río Bravo del Norte or simply the Río Bravo, is one of the principal rivers (along with the Colorado River) in the southwestern United States and in northern Mexico. The length of the Rio G ...

near

Albuquerque, New Mexico Albuquerque ( ; ), ; kee, Arawageeki; tow, Vakêêke; zun, Alo:ke:k'ya; apj, Gołgéeki'yé. abbreviated ABQ, is the most populous city in the U.S. state of New Mexico. Its nicknames, The Duke City and Burque, both reference its founding in ...

References

{{Rivers, streams and springs Slope landforms Valleys

Word and etymology

Toponymy

In geology

See also

References