river
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...
in
Picardy
Picardy (; Picard and french: Picardie, , ) is a historical territory and a former administrative region of France. Since 1 January 2016, it has been part of the new region of Hauts-de-France. It is located in the northern part of France.
Hi ...
, northern
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
.
The river is in length, from its source in the high ground of the former at
English Channel
The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kana ...
. It lies in the
geological
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 Eart ...
syncline
In structural geology, a syncline is a fold with younger layers closer to the center of the structure, whereas an anticline is the inverse of a syncline. A synclinorium (plural synclinoriums or synclinoria) is a large syncline with superimpose ...
which also forms the
Solent
The Solent ( ) is a strait between the Isle of Wight and Great Britain. It is about long and varies in width between , although the Hurst Spit which projects into the Solent narrows the sea crossing between Hurst Castle and Colwell Bay t ...
. This gives it a fairly constant and gentle gradient where several
fluvial 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 have been identified.
Name
The Somme river was known in ancient times as ''Samara''. It presumably means 'the summery river', that is to say the 'quiet river', stemming from an adjective *''sam-aro''- ('summery') itself derived from the
Celtic
Celtic, Celtics or Keltic may refer to:
Language and ethnicity
*pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia
**Celts (modern)
*Celtic languages
**Proto-Celtic language
* Celtic music
*Celtic nations
Sports Fo ...
root *''samo''- ('summer')., s.v. ''Samara'' and ''Samarobriva Ambianorum.''
The city of
Amiens
Amiens (English: or ; ; pcd, Anmien, or ) is a city and commune in northern France, located north of Paris and south-west of Lille. It is the capital of the Somme department in the region of Hauts-de-France. In 2021, the population of ...
was also known as ''
Samarobriva
Amiens (English: or ; ; pcd, Anmien, or ) is a city and commune in northern France, located north of Paris and south-west of Lille. It is the capital of the Somme department in the region of Hauts-de-France. In 2021, the population of A ...
'' (Gaulish: 'bridge on the Samara'). It is attested by the early 1st century BC as the chief town of the
Ambiani
The Ambiani (Gaulish: ''Ambiāni'', 'those around') were a Belgic coastal tribe dwelling in the modern Picardy region during the Iron Age and Roman periods.
They settled in the region between the 4th century and the second part of the 2nd centur ...
, an ancient Gallic tribe of the region. The modern department of Somme was named after this river.
History
left, '' Crossing the Somme'' (at the Battle of Blanchetaque">King Edward III Crossing the Somme'' (at the Battle of Blanchetaque): painting by Benjamin West, 1788
The Somme has featured prominently in several military campaigns. In 1066, the invasion fleet of William the Conqueror assembled in the Bay of the Somme, at
Saint-Valery-sur-Somme
Saint-Valery-sur-Somme (, literally ''Saint-Valery on Somme''; pcd, Saint-Wary), commune in the Somme department, is a seaport and resort on the south bank of the River Somme estuary. The town's medieval character and ramparts, its Gothic churc ...
. The river also featured in the 1346 withdrawal of
Edward III of England
Edward III (13 November 1312 – 21 June 1377), also known as Edward of Windsor before his accession, was King of England and Lord of Ireland from January 1327 until his death in 1377. He is noted for his military success and for restoring ro ...
's army, which forded the river at the
Battle of Blanchetaque
The Battle of Blanchetaque was fought on 24 August 1346 between an Kingdom of England, English army under King Edward III and a Kingdom of France, French force commanded by Godemar I du Fay, Godemar du Fay. The battle was part of the Crécy ...
during the campaign, which culminated in the
Battle of Crécy
The Battle of Crécy took place on 26 August 1346 in northern France between a French army commanded by King PhilipVI and an English army led by King EdwardIII. The French attacked the English while they were traversing northern France du ...
. Crossing the river also featured prominently in the campaign which led to the
Battle of Agincourt
The Battle of Agincourt ( ; french: Azincourt ) was an English victory in the Hundred Years' War. It took place on 25 October 1415 (Saint Crispin's Day) near Azincourt, in northern France. The unexpected English victory against the numerica ...
in 1415.
In 1636, a Spanish army led by
Thomas Francis, Prince of Carignano
Thomas Francis of Savoy, 1st Prince of Carignano (; ; 21 December 1596 – 22 January 1656) was an Italian military commander and the founder of the Carignano branch of the House of Savoy, which reigned as kings of Piedmont-Sardinia from 1831 ...
,
crossed the Somme
The Crossing of the Somme took place on 5 August 1636 during the Thirty Years' War and the Franco-Spanish War when units of the Spanish Army of Flanders and the Imperial Army under Thomas Francis, Prince of Carignano, lieutenant of the Card ...
defeating a French army during the
Thirty Years War
The Thirty Years' War was one of the longest and List of wars and anthropogenic disasters by death toll, most destructive conflicts in History of Europe, European history, lasting from 1618 to 1648. Fought primarily in Central Europe, an es ...
threatening Paris.
Most famously, the
Battle of the Somme
The Battle of the Somme ( French: Bataille de la Somme), also known as the Somme offensive, was a battle of the First World War fought by the armies of the British Empire and French Third Republic against the German Empire. It took place bet ...
, during
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, lasted from July to November 1916 and resulted in more than a million casualties. Private A. S. Bullock in his wartime memoir recalled his first sight of it in early April 1918: "... we reached a small place called Hengest sur Somme. The train stopped and we descended. There in front of us was a muddy, sluggish and somewhat narrow stream, which has given its name to one of the most awful battles in history – the Somme." The great battles that finally stopped the German advance in the Spring Offensive of 1918 were fought around the valley of the Somme in places like Villers Bretonneux, which marked the beginning of the end of the war.
Départements and towns along the river
*
Aisne
Aisne ( , ; ; pcd, Ainne) is a French department in the Hauts-de-France region of northern France. It is named after the river Aisne. In 2019, it had a population of 531,345.Saint-Quentin
* Somme :
Ham
Ham is pork from a leg cut of pork, cut that has been food preservation, preserved by wet or dry Curing (food preservation), curing, with or without smoking (cooking), smoking."Bacon: Bacon and Ham Curing" in ''Chambers's Encyclopædia''. Lo ...
Corbie
Corbie (; nl, Korbei) is a commune of the Somme department in Hauts-de-France in northern France.
Geography
The small town is situated up river from Amiens, in the département of Somme and is the main town of the canton of Corbie. It lies in ...
,
Amiens
Amiens (English: or ; ; pcd, Anmien, or ) is a city and commune in northern France, located north of Paris and south-west of Lille. It is the capital of the Somme department in the region of Hauts-de-France. In 2021, the population of ...
,
Abbeville
Abbeville (, vls, Abbekerke, pcd, Advile) is a commune in the Somme department and in Hauts-de-France region in northern France.
It is the chef-lieu of one of the arrondissements of Somme. Located on the river Somme, it was the capital of ...
,
Saint-Valery-sur-Somme
Saint-Valery-sur-Somme (, literally ''Saint-Valery on Somme''; pcd, Saint-Wary), commune in the Somme department, is a seaport and resort on the south bank of the River Somme estuary. The town's medieval character and ramparts, its Gothic churc ...
,
Le Crotoy
Le Crotoy () is a commune in the Somme department in Hauts-de-France in northern France. The inhabitants are known as ''Crotellois''.
History
Isabella of France, queen consort of England, and her son (later Edward III of England) embarked fro ...
Tributaries
The tributaries listed comprise:
Hydrology
The river is characterized by a very gentle gradient and a steady flow. The valley is more or less steep-sided but its bottom is flat with
fen
A fen is a type of peat-accumulating wetland fed by mineral-rich Groundwater, ground or surface water. It is one of the main types of wetlands along with marshes, swamps, and bogs. Bogs and fens, both peat-forming ecosystems, are also known as ...
s and pools. These characteristics of steady flow and flooded valley bottom arise from the river's being fed by the
ground water
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidate ...
in the
chalk
Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk ...
basin in which it lies. At earlier, colder times, from the
Günz
The Günz is a river in Bavaria, Germany.
It is formed near Lauben by the confluence of its two source rivers: the Östliche Günz (eastern Günz) and the Westliche Günz (western Günz). It is approx. long (including its western source rive ...
to the
Würm
The Würm is a river in Bavaria, Germany, right tributary of the Amper. The length of the river is , or including the ''Steinbach'', the main feed of Lake Starnberg. It drains the overflow from Lake Starnberg and flows swiftly through the villag ...
(Beestonian or Nebraskan to Devensian or Wisconsinian) the river has cut down into the
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...
geology to a level below the modern
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 ...
. The valley bottom has now therefore, filled with water which, in turn, has filled with
fen
A fen is a type of peat-accumulating wetland fed by mineral-rich Groundwater, ground or surface water. It is one of the main types of wetlands along with marshes, swamps, and bogs. Bogs and fens, both peat-forming ecosystems, are also known as ...
. This picture, of the source of the Somme in 1986, shows it when the water table had fallen below the surface of the chalk in which the
aquifer
An aquifer is an underground layer of water-bearing, permeable rock, rock fractures, or unconsolidated materials (gravel, sand, or silt). Groundwater from aquifers can be extracted using a water well. Aquifers vary greatly in their characterist ...
lies. Here, the flow of water had been
sufficient
In logic and mathematics, necessity and sufficiency are terms used to describe a conditional or implicational relationship between two statements. For example, in the conditional statement: "If then ", is necessary for , because the truth of ...
to keep fen from forming. This satellite photograph shows the fenny valley crossing the chalk to the sea on the left. The sinuous length at the centre of the picture lies downstream from Péronne.
One of the fens, the ''Marais de l'Île'' is a nature reserve in the town of St.Quentin. The traditional market gardens of
Amiens
Amiens (English: or ; ; pcd, Anmien, or ) is a city and commune in northern France, located north of Paris and south-west of Lille. It is the capital of the Somme department in the region of Hauts-de-France. In 2021, the population of ...
, the ''Hortillonages'' are on this sort of land but drained. Once exploited for
peat cutting
Peat (), also known as turf (), is an accumulation of partially decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, moors, or muskegs. The peatland ecosystem covers and is the most efficien ...
, the fen is now used for fishing and shooting
In 2001, the Somme valley was affected by particularly high floods, which were in large part due to a rise in 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 ...
Canal de la Somme
The Canal de la Somme is a canal in northern France. Its total length is 156.4 km with 25 locks, from the English Channel at Saint-Valéry-sur-Somme to the Canal de Saint-Quentin at Saint-Simon.
History
The Somme River was canalized begi ...
'' began in 1770 and reached completion in 1843. It is long, beginning at St.Simon and opening into the Bay of the Somme. From St.Simon to Froissy (near Bray sur Somme, south of Albert), the canal is alongside the river. Thence to the sea, the river is partly river and partly navigation. From
Abbeville
Abbeville (, vls, Abbekerke, pcd, Advile) is a commune in the Somme department and in Hauts-de-France region in northern France.
It is the chef-lieu of one of the arrondissements of Somme. Located on the river Somme, it was the capital of ...
, it is diverted through the
silt
Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when ...
ed, former
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 ...
, to
Saint-Valery-sur-Somme
Saint-Valery-sur-Somme (, literally ''Saint-Valery on Somme''; pcd, Saint-Wary), commune in the Somme department, is a seaport and resort on the south bank of the River Somme estuary. The town's medieval character and ramparts, its Gothic churc ...
, where the maritime canal, once called the canal du Duc d'Angoulême enters the English Channel.
The
St Quentin Canal
The Canal de Saint-Quentin () is a canal in northern France connecting the canalised river Escaut in Cambrai to the Canal latéral à l'Oise and Canal de l'Oise à l'Aisne in Chauny.
History
The canal was built in two phases, the second much long ...
, famous for the 1918 battle, links the Somme to northern France and
Belgium
Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
and southward to the
Oise
Oise ( ; ; pcd, Oése) is a department in the north of France. It is named after the river Oise. Inhabitants of the department are called ''Oisiens'' () or ''Isariens'', after the Latin name for the river, Isara. It had a population of 829,419 ...
. The Canal du Nord also links the Somme to the Oise, at Noyon, thence to Paris.
References
Citations
Sources
* Delattre, Ch., Mériaux, E. and Waterlot, M. ''Guides Géologiques Régionaux: Région du Nord, Flandre Artois Boulonnais Picardie'' (1973)
*
*