Fish lift sluice by system of "der Wasserwirt" - Novel fish ladder

The fish lift sluice by system of "der Wasserwirt" is about a novel kind offish ladder, that is characterised by little space requirements, little water requirements and also lower costs of construction. Thereby the new system is suitable for sites of hydro stations, where the installation offish ladders according to prior art are not realisable concerning to constricted room, less residual water discharge on rivers with a low average runoff (e.g. <1 m3/s) or high costs of construction.