| Ternoise | |
|---|---|
| Origin | Pas-de-Calais |
| Mouth | Canche |
| Basin countries | France |
| Length | 43 km |
| Avg. discharge | 4.45 m³/s |
| Basin area | 342 km² |
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 basin of the Ternoise extends to 342 km² 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.
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Rising at Ligny-Saint-Flochel, passing through Saint-Pol-sur-Ternoise and joining the river Canche at Huby-Saint-Leu, near to the town of Hesdin.
The Ternoise flows through the following places (all within the Pas-de-Calais department):
The Faux and the Eps are the only principle watercourses joining the Ternoise.
The Ternoise is a very uniform river. Seasonal flow fluctuations are very 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.
This article is derived from the French Wikipédia.