The most important measures in the Delta Act
- The Delta Plan involves the construction of large primary dams (30 kilometres in length) in four sea inlets between the Western Scheldt and the New Waterway, together shortening the coastline by 700 kilometres.
- No dams are to be built in the New Waterway and the Western Scheldt, as the seaports of Rotterdam and Antwerp must remain freely accessible. The retaining dikes are to be reinforced.
- The Delta Plan also provides for three dams further inland to facilitate the construction of the primary dams. In addition these dams have a water management function, dividing saltwater and freshwater delta lakes and separating waters with varying water-levels.