Authie Valley

Val d’Authie

Val d’Authie

The territory is the watershed of the Authie, a coastal river marking the boundary between the departments of Pas-de-Calais and Somme. The Authie is a river parallel to the Canche and the lower bed of the Somme. 

The valley is long (about 100 km) and not very wide (from 9 to 23 km). Its geological formation explains this configuration. Oriented on a west/north-west axis, its sides are asymmetrical: on the right bank, the slope is gently sloping; on the left bank, the slope is short and steep. 

The Authie has its source in Coigneux, about 100 m above sea level. After receiving the waters of its 3 tributaries (Kilienne, Grouche and Gézaincourtoise), it flows into the English Channel between Berck and Fort-Mahon via the Bay of Authie, a network of complex channels granted the particular landscape of the low fields.
The terms high, middle, low valleys and low fields are often used to find your way around the valley; the upper valley is between the source and Occoche/Outrevois; then follow the middle valley to Dompierre/Douriez, and the lower valley to the Falaise Morte, near Colline-Beaumont. Finally, the low fields join the sea, encompassing the Bay of Authie.

Issues & Objectives

The CPIE Val d'Authie is above all a Resource Center for the Territory. It is a place of exchange, dissemination and provision of information, data, experiences, a network of partners and technical skills made available to you at the territorial level. Ternois.

The CPIE is a real platform for exchanging information and know-how in the field of sustainable development, allowing information, training or advice.

With its skills in supporting territories, raising awareness and educating everyone about the environment, the CPIE can provide you with:
- appropriate advice;
- technical documentation on specific topics;
- support in setting up the project;
- specific training.

This Resource Center is aimed at all players in the area: local authorities (elected officials and technicians), associations, companies, schools, individuals.

This Resource Center is structured around three areas of activity: raising awareness of the environment and sustainable development (reception of classes staying, educational outings, activities for the general public, etc.), training (professionals in the animation, professional integration, building trades, environment) and support for territories (watercourse management plans, Green and Blue Infrastructure, urban planning documents, fauna / flora inventories, etc.).


Pilot Site lead