The central aim was to strengthen the role of socio-economic development while enhancing sustainable water management along water corridors that connect wetlands, cities and the North Sea. Achievements: The main result was a shift towards an all-encompassing approach, in which socio-economic elements have been identified and included in the early phase of project development, thereby maximising the effects.Waterline Economy showed that it is possible to connect economic goals within projects to implement European directives. This new approach is adopted by many authorities and organisations and generates better public support, political commitment and more positive attitude to European rules.The development of the method of assessing benefits in projects via the Multi Criteria Analysis is unique in its own right, as it has marked the start of a new approach towards projects in general. The method has made it possible to sell ideas a lot easier, not so much because identified benefits can be monetised and deducted from the total expenses of a project, but because many new arguments can be used, to justify expenses on issues that would otherwise require much more debate.