Grouche

The Grouche is a river of the north of France, tributary of the Authie.

Grouche takes its source on the territory of the commune of Coullemont in the Pas-de-Calais, then adopting a north-eastern/south-western direction, runs out through the Département of the Sum before joining the Authie with Doullens out of Right Bank. It is the principal tributary of this coastal Fleuve even if its course measures only 14,7 km. The river developed a small asymmetrical valley presenting of the short and sloping small valleys out of left bank; the green character of the latter is related to the preeminence of the Bocage. Grouche, whose valley a long time marked the moving border between the Picardy and the Artois, sprinkles, except for Doullens that small communes. Among its last is distinguished the small medieval city from Lucheux to the rich person architectural heritage whose castle, the church and the belfry illustrate division into three orders of the medieval company. The castle, built in 1120 by Hugues II of Campdavaine, Count of Saint-pol., is a powerful fortification, victims on several occasions of the many combat being held in the area; destroyed on several occasions the English, Burgundian and Spanish troops, it was definitively dismantled under the reign of Louis XIII. The Saint-Leger church, bearing the name of the bishop of Autun martyrized in forest of Lucheux at the 7th century dates from the 12th century and preserves this time of the ribbed vaults among oldest of France come to supplement this rich person inheritance.

Grouche crosses the communes of Coullemont, of Humbercourt, Lucheux, Grouches-Luchuel and Doullens.

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