Data & Evidence

Understanding The Environment

We believe that the better we know our rivers, the better the help we can give them. Only by being out on the ground, collecting a variety of information and monitoring their condition can we focus our efforts where they are most effective. This data and evidence enable us to develop projects appropriate not only to the specific site, but which also consider the wider area, ensuring that the maximum benefit can be delivered.

We have teams of trained volunteers who collect samples, analyse water quality data and survey the river network. We are big supporters of citizen science as a means to improve our understanding whilst engaging and inspiring people about the natural world. For more information about getting involved with our data and evidence team visit our get involved pages.

Walkover Surveys

OART have extensive experience of conducting sub-catchment walkover surveys to gather a wide range of information with over 200km walked to date.

Biological Monitoring

For over 25 years, OART and its predecessors have been undertaking biological monitoring on the waterways of the catchment.

Chemical Monitoring

At the Ouse & Adur Rivers Trust Laboratory we have the necessary equipment to test water quality parameters relevant to the core aspects of our work.

Sea Trout Watch

Often described as the “Jewel in the Crown” of the River Ouse and River Adur this enigmatic species was also the key focus when the predecessors of OART were formed back in 1995.

Plastic Pollution

We’re collecting information on the types, brands and accumulation rate of plastics across the catchment.

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.

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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.