Wamel inflow 2017 dataset final swimming speeds (m/s; 2 significant figures) for the European eel shown as (a) 3D lattice and (b) isosurface of passable lattice when using U_crit. The (c) 3D lattice and (b) isosurface of passable lattice when using U_burst. The (e) 3D lattice and (f) isosurface of passable lattice using U_crit for the twaite shad. All isosurfaces were estimated for final swimming speeds ≥0.05 m/s. Areas where some forward motion would be expected are shown in blue, neutral areas are shown in white and areas where the fish would be likely to drift are shown in red.