International audienceAlthough the landscapes of the valleys are original and subject to increasing stakes, they still are not studied very much, because landscape studies are often done to encompassing territorial scales; the studies disregard the specificity of those landscapes. This analysis is based upon the setting up of a typology of landscape of the valleys of the northwest France and the working-out of prospective patterns. Its aim is to help define the policies of "integrated management" which are adapted to those territories. This reasoning is carried out via the realisation of a diagnosis of present landscapes of small valleys following a reasoning which can be reproduced. At first we set up a morphological typology of valleys at...