The river Ternoise (; ) 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 catchment basin of the Ternoise extends to 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 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.
Gallery
Image:Ternoise-hernicourt.JPG|The Ternoise at Hernicourt
Image:auchy.jpg|The Ternoise at Auchy-lès-Hesdin
Image:TernoiseAnvinA.JPG|The Ternoise at Anvin
Image:TernoiseAnvinB.JPG|At Anvin, further upstream
See also
-
Schéma directeur d'aménagement et de gestion des eaux
External links
