The most promising locations were then selected based on the substantiation and visualisation of the design variants. During this decision-making process, the variants were assessed by domain experts in terms of ecology, environmental impact, feasibility, costs and cost-effectiveness. In order to create a well-functioning ecosystem for the entire area, the locations Kinselbaai, De Nes, Schardammer Kogen and Uiterdijk were selected as preferred alternatives.

To improve and create habitats for birds and fish and improve water quality, the following new fish migration facilities, among others, will be set up as spawning and rearing areas for fish. Among other things, natural bank habitats will be created, a gradual transition from water to land will be provided and realised, zones with shallow and clear water will be added, transitions in water depths will be reinforced and the areas outside and inside the dykes will be connected.