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Authie (river)

The Authie at Frohen-sur-Authie
File:Bassin de l'Authie-fr.svg
Origin Picardie

English Channel
50°23′30″N 1°33′40″E / 50.39167°N 1.56111°E / 50.39167; 1.56111 (English Channel-Authie)Coordinates: 50°23′30″N 1°33′40″E / 50.39167°N 1.56111°E / 50.39167; 1.56111 (English Channel-Authie){{#coordinates:50|23|30|N|1|33|40|E| |primary |name=English Channel-Authie

Basin countries France
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The Authie is a river in northern France whose Script error: No such module "convert". course crosses the departement of the Pas-de-Calais and the Somme. Its source is near the village of Coigneux. It flows through the towns of Doullens, Auxi-le-Château, Nempont-Saint-Firmin and Nampont, finally flowing out into the Channel near Berck. [1]

Its regular course has attracted mankind for many centuries, developing an agricultural environment that is still dominant today. The valley of the Authie, with many towns, villages, abbeys and chateaux, holds a rich architectural heritage alongside the banks of the river, while the river mouth forms a sizeable bay between Fort-Mahon-Plage and Berck, typical of Picardy estuaries. The area is home to a diverse range of flora and fauna.


The origin of the name Authie has not been established with any certainty. A possibility is the pre-Celtic word atur meaning river.[2] Many waterways’ names, such as the Adour, are a corruption of the Celtic term alt meaning deep and that could refer to the steep-sided bed of the river.[3] Another suggestion stems from the Latin word attegia designating groups of fishermen and lumberjacks living by any river. .[4]



In the context of an oceanic/pluvial system, the Authie has a uniform and comparatively sustained outflow of Script error: No such module "convert". at its outlet.[5] The river flow is affected by the oceanic climate, characterized by an average annual temperature of 10 °C (50 °F), very few days of frost, comparatively high rainfall between Script error: No such module "convert". per year except near the coast estuary where rainfall is less than Script error: No such module "convert". per year.[6]

Departements and communes traversed



  • Gérard Bacquet, Val d'Authie, Ed. Château, Auxi-le-Château, 1975 ASIN B0000DP6VS
  • Eric Alibert, La Côte d'Opale, Carnet du Littoral, Gallimard - Conservatoire du littoral, 1998 ISBN 2-07-051467-6

External links

Notes and references

  1. ^ Authie on the Sandre (Fr.Gov) website
  2. ^ The origin of the name of the Authie
  3. ^ The Authie: a valley, landscapes, a little history on Read online
  4. ^ The website of the town of Authie
  5. ^ The Authie Artois-Picardy Water Agency website.
  6. ^ French weather chart on Le Ponthieu et le Vimeu, by the Ministry of Agriculture Read online