in our catchment

The River Ouse

The Sussex River Ouse is a beautiful and fascinating network of over 1200 kms of rivers, streams and brooks which collect water from just over 650 square kms of the surrounding countryside. The main River Ouse begins from springs near to Slaugham in West Sussex before flowing south east to Haywards Heath before meeting its main tributary, the River Uck, at Isfield. From their confluence (meeting point) the River Ouse flows southwards through the historical Barcombe Mills to Lewes and finally meets the sea at Newhaven. Read more about the River Ouse.

The River Adur

With a total catchment area of about 500km2, the course of the River Adur runs for 20 miles but has two distinct arms aptly named the Western Adur and the Eastern Adur. The Western Arm rises near Slinfold flowing through Shipley and West Grinstead, the Eastern Arm rising near Ditchling Common passing between Haywards Heath and Burgess Hill and through Twineham. These arms join 2 km west of Henfield and flow south across the Henfield Levels. From here it flows towards Upper Beeding, Bramber and on to Shoreham-by-Sea. Along this stretch are the remnants of the once prolific salt marshes rich with unique species. Read more about the River Adur

The Ouse & Adur Rivers Trust


OART is a membership based organisation dedicated to the environmental protection and enhancement of the Sussex River Ouse and Adur including their tributaries, estuaries and still waters.

Contact us at info@oart.org.uk


The Ouse & Adur Rivers Trust (OART) is a registered charity (No: 1082447) formed in 2011 from the amalgamation of two long-standing local organisations, the River Adur Conservation Society and Sussex Ouse Conservation Society.