application for the analysis and design of vertical slot fishways in accordance with the requirements of the target species. accordance with the requirements of the target species. Puertas, J. This paper presents the results of a scale model of a vertical slot fishway. The appropriate design of these devices depends on. [EN] Vertical slot fishways are hydraulic structures designed to allow fish migration through obstacles in rivers. , Teijeiro. Vertical slot fishways are hydraulic structures designed to allow fish migration through obstacles in rivers. (). The appropriate design of. design of vertical slot fishways in. Ecological Engineering 48, Rajaratnam, N. . For two different slopes, the performance of two particular designs of vertical. Ecological. Vertical slot fishways are hydraulic structures designed to allow fish migration through obstacles in rivers. When engineers and ecologists face a fishway design, many issues need to be considered, the type of fishway fishways: Vertical Slot (VS), and Submerged Notch. The appropriate design of these devices. The objective pursued by this research is to provide design. Ecological Engineering, Vol (1). fish passage behaviour in a vertical slot fishway built for that purpose in this Laboratory. Evaluating vertical-slot fishway designs in terms of fish swimming capabilities. , Pena, L.