Area: 82.97 hectares.
Description and Reasons for Notification:
Geological Conservation Review Site.
This reach of the River Exe is important in illustrating two types of floodplain development, principally through small-scale, high-frequency discharge events. The floodplain had developed through lateral meander movement and overbank sedimentation in abandoned palaeochannels. Detailed study of one complex meander bend has shown that maximum erosion occurred during discharge events with a recurrence interval of 2.5 years; evidence for large scale flood erosion is absent. This site therefore provides an important contrast with others such as the Lyn where high magnitude, low-frequency events have left a significant geomorphological impact.
In summary this site is important because it helps illustrate the processes which form contemporary flood plains along Britain’s rivers.