The Catchment Based Approach (CaBA) is a community-led approach that engages people and groups from across society to help improve our precious water environments. CaBA Partnerships are now actively working in 100+ catchments across England and Wales.  More details on CaBA can be found at

CaBA promotes an initiative of the Westcountry Rivers Trust that, in collaboration with DEFRA and the Rivers Trust, has developed a method for undertaking stakeholder-led spatial visualisation of ecosystem services provisioning areas across a catchment landscape. 

During this participatory process, primary, secondary and tertiary stakeholders and technical specialists work with a broker/facilitator to collate and scrutinise all of the data and evidence relating to environmental infrastructure and ecosystem services provision for their area of interest.

WRT first developed this approach during the Tamar Partnership Pilot in 2012. Since then, the approach has been adopted in four further catchments in the South West River Basin District and WRT are also working to assist two others. Furthermore, six catchments in the Severn River Basin District and two catchments in the Anglian River Basin District (the Cam & Ely Ouse and East Suffolk) have also used this approach in their catchment partnerships to date.

To view all of the ESS Visualisation Map Books produced so far please visit the WRT Issuu page.