The designated area of the AONB is 90 kilometres square and stretches from Manningtree to within one mile of Bures. The River Stour is the key landscape focus for the valley, its course being defined by river-bank trees, water meadows and a wide variety of wildlife habitats. Members of the Dedham Vale and Stour Valley Project are aware that all these features are vulnerable to change due to changing agricultural practices, increased leisure time and an awareness of environmental concerns.
The Stour Valley Project Area has benefited from several enhancement schemes in which the AONB and the Environment Agency have worked together in partnership. The aim is to strike a balance between protecting the diverse wildlife living in and around the River Stour while also providing access for people to enjoy the landscape.