Upper Arun

Upper Arun is a 17.6 ha biological Site of Special Scientific Interest between Billingshurst and Pulborough in West Sussex.

This 13 km long stretch of the River Arun provides the habitat for a rich riverine flora, such as common club-rush and reed canary-grass. It is an outstanding site for breeding dragonflies, including the clubtail, hairy, brilliant emerald and the nationally rare scarce chaser.