For the sustainable management of the Scheldt estuary a lot of different rules and directives exist. Since the end of the last century Flanders and the Netherlands aim for a cross-border coordination of policies and ideas. An important refence in this respect is the Long Term Vision Scheldt Estuary (LTV) and its first implementation in the Development Plan Scheldt Estuary 2010 (OS2010). In the Long Term Vision three functions are central: safety from floods, accessibility of the ports and naturality for the physical and ecological system. On a European and international level too, there are some juridical and policy-related conditions for the monitoring and evaluation of the Scheldt, for example Kaderrichtlijn Water, Natura2000 and OSPAR. An overview on policy and legislation can be found in the Compendium for Sea and Coast.
To support policymakers a lot of research is being done: how can European legislation be implemented, how can we unite economical and environmental interests, where is compensation needed...? Several monitoring programs were initiated or adjusted in order to conform to different policy requirements.