The

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 ...

Ternoise (; nl, Ternaas) is one of the small chalk streams that flow from the plateau of the southern Boulonnais and

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 ...

, via the

Canche The river Canche (; nl, Kwinte) is one of the rivers that flow from the plateau of southern Boulonnais and Picardy, into the English Channel, of which the Somme is the largest example. It is long. The basin of the Canche extends to and lies ...

, into the

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 ...

. The basin of the Ternoise extends to and lies in the southern end of the ''

département In the administrative divisions of France, the department (french: département, ) is one of the three levels of government under the national level ("territorial collectivity, territorial collectivities"), between the regions of France, admin ...

'' of

Pas-de-Calais Pas-de-Calais (, " strait of Calais"; pcd, Pas-Calés; also nl, Nauw van Kales) is a department in northern France named after the French designation of the Strait of Dover, which it borders. It has the most communes of all the departments ...

. It is one of the rivers of the

Seven Valleys ''The Seven Valleys'' ( fa, ''Haft-Vádí'') is a book written in Persian language, Persian by Baháʼu'lláh, the founder of the Baháʼí Faith. ''The Seven Valleys'' follows the structure of the Persian poem ''The Conference of the Birds''. ...

tourist area and gives its name to the Ternois area.

Geography

The long river rises at Ligny-Saint-Flochel and passes through

Saint-Pol-sur-Ternoise Saint-Pol-sur-Ternoise (, literally ''Saint-Pol on Ternoise''; vls, Sint-Pols-aan-de-Ternas) is a commune in the Pas-de-Calais department in northern France. It is the seat of the canton of Saint-Pol-sur-Ternoise. The population of the town is 4, ...

to join the river

at Huby-Saint-Leu, near to the town of

Hesdin Hesdin (; vls, Heusdin) is a commune in the Pas-de-Calais department in northern France. Geography The N39, from Arras to Montreuil, used to be the main thoroughfare of the town. In the 1950s, a circular route was created to help traffic flo ...

Towns and villages along the course

The Ternoise flows through the following places (all within the

department): * Ligny-Saint-Flochel,

Roëllecourt Roëllecourt is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Roëllecourt lies east of Saint-Pol-sur-Ternoise, some west of Arras, at the junction of the D8 and N39 roads. Population Places ...

Saint-Michel-sur-Ternoise Saint-Michel-sur-Ternoise (, literally ''Saint-Michel on Ternoise'') is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Saint-Michel-sur-Ternoise is an eastern suburb of Saint-Pol-sur-Ternoise, on t ...

Gauchin-Verloingt Gauchin-Verloingt () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography A farming village situated in the valley of the Ternoise The river Ternoise (; nl, Ternaas) is one of the small chalk strea ...

Hernicourt Hernicourt is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography A commune made up of three farming villages (Sautricourt, St.Martin and Hernicourt) that surround the neighbouring commune of Wavrans-s ...

Wavrans-sur-Ternoise Wavrans-sur-Ternoise is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Wavrans-sur-Ternoise is situated some northwest of Arras, at the junction of the D343 and the D99 roads, on the banks of the ...

Monchy-Cayeux Monchy-Cayeux is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Monchy-Cayeux is situated northwest of Arras, in the Ternoise river valley and on the D343 road. Population Places of interest * Th ...

Anvin Anvin () is a commune in the Pas-de-Calais department in northern France. Geography Anvin is a farming village located in the Ternoise river valley, 28 miles (44 km) northwest of Arras, at the junction of the D343, D70 and D94 roads. Po ...

Teneur Teneur () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Teneur lies northwest of Arras, at the junction of the D97 and D94 roads, by the banks of the river Ternoise. Population Places of inte ...

Érin Érin () is a commune in the Pas-de-Calais department in the Hauts-de-France region in France. Situation Érin is a small village on the south side of the small river, the Ternoise which flows through St.Pol-sur-Ternoise and joins the River Ca ...

Tilly-Capelle Tilly-Capelle is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Tilly-Capelle lies in the Ternoise valley, northwest of Arras, near the junction of the D94 and D97 roads. Population Places of int ...

Blangy-sur-Ternoise Blangy-sur-Ternoise (, literally ''Blangy on Ternoise'') is a commune in the Pas-de-Calais department in the Hauts-de-France region in northern France. Geography Situated some 9 miles(15 km) northwest of Saint-Pol-sur-Ternoise Saint-Pol ...

, Blingel, Rollancourt,

Auchy-lès-Hesdin Auchy-lès-Hesdin is a commune in the Pas-de-Calais department and Hauts-de-France region of France. Geography Auchy is situated on the D94 some east-southeast of Montreuil on the banks of the Ternoise, a tributary of the river Canche. Hist ...

, Le Parcq, Grigny and Huby-Saint-Leu.

Tributaries

The Faux and the Eps are the only principal watercourses joining the Ternoise.

Hydrological Information

The Ternoise is a very uniform river. Seasonal flow fluctuations are not very marked, similar to the Canche or the Somme, its neighbours. The higher water flows occur at the end of winter and in the spring. Average flows vary between 3.44 m³ per second in September to 5.36 m³ per second in March.

Gallery

Image:Ternoise-hernicourt.JPG, The Ternoise at

Image:auchy.jpg, The Ternoise at

Image:TernoiseAnvinA.JPG, The Ternoise at

Image:TernoiseAnvinB.JPG, At Anvin, further upstream

References

External links

*''Carte Géologique de la France à l'échelle du millionième'' 6th edn. BRGM (2003)
Banque Hydro - Station E5406510 - La Ternoise à Hesdin (option Synthèse)

Carte des bassins versants de la Canche et de la Ternoise Informations sur les atlas des zones inondables
{{Authority control Rivers of France Rivers of the Pas-de-Calais Rivers of Hauts-de-France