• Source: Ternoise

      • The river Ternoise (French pronunciation: [tɛʁnwaz]; Dutch: Ternaas) is one of the small chalk streams that flow from the plateau of the southern Boulonnais and Picardy, via the Canche, into the English Channel. The basin of the Ternoise extends to 342 square kilometres (132 sq mi) and lies in the southern end of the département of Pas-de-Calais. It is one of the rivers of the Seven Valleys tourist area and gives its name to the Ternois area.


      Geography


      The 41.4-kilometre (25.7 mi) long river rises at Ligny-Saint-Flochel and passes through Saint-Pol-sur-Ternoise to join the river Canche at Huby-Saint-Leu, near to the town of Hesdin.


      Towns and villages along the course


      The Ternoise flows through the following places (all within the Pas-de-Calais department):

      Ligny-Saint-Flochel, Roëllecourt, Saint-Michel-sur-Ternoise, Saint-Pol-sur-Ternoise, Gauchin-Verloingt, Hernicourt, Wavrans-sur-Ternoise, Monchy-Cayeux, Anvin, Teneur, Érin, Tilly-Capelle, Blangy-sur-Ternoise, Blingel, Rollancourt, Auchy-lès-Hesdin, 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.


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      See also


      Schéma directeur d'aménagement et de gestion des eaux


      References




      External links



      Carte Géologique de la France à l'échelle du millionième 6th edn. BRGM (2003) ISBN 2-7159-2158-6
      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

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