The report "Intercomparison of Ecological Potential for Rivers" reviews and intercompares the methods used in European countries to define the ecological potential of river heavily modified water bodies. The report has been developed as part of an intercomparison exercise, which took place in the Water Framework Directive Common Implementation Strategy (WFD CIS) in 2019-2021. The report presents and summarises the information provided by European countries on the application of steps of CIS Guidance no. 37 "Steps for defining and assessing ecological potential for improving comparability of Heavily Modified Water Bodies" in the 3rd River Basin Management Plans.
Under its 'Framework contract for Evaluation, review and development of EU Water Policy', the European Commission DG Environment has issued a service request for a Specific Contract to provide "Support for the intercomparison of Good Ecological Potential for Heavily Modified Water Bodies and elaboration of a technical document on sediment management in the context of the Water Framework Directive". The aim of this Specific Contract is to ensure support for the follow-up activities towards the further elaboration of deliverables concerning Good Ecological Potential and sediment management as outlined in the 2019-2021 work programme for the ECOSTAT working group of the WFD Common Implementation Strategy.