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Overall, due to the very high number of barriers present on rivers in Europe, there is a need for prioritisation of measures to restore continuity. Some national and regional strategies for restoring continuity are in place to ensure a phased approach in dealing with the issue of barriers. Examples include the Benelux treaty on free fish migration (adopted in 1996), continuity restoration initiatives in the international river basins of the Rhine[3] and the Danube (Shepherd, 2012) as well as national programmes and priority networks for river continuity restoration in specific countries such as France, Austria, Germany and Finland (Kampa et al, 2017; Ollikainen & Vilhunen, 2019).

[3] http://www.salmoncomeback.org/