3D upstream passability of novel river training structures by migratory fish in the river Waal ...

• Main Authors: N.Y. Flores, F.P.L. Collas, R.S.E.W. Leuven
• Format: Dataset
• Language: unknown
• Published: DANS Data Station Life Sciences 2022
• Subjects: European eel
• Online Access: https://dx.doi.org/10.17026/dans-xtm-cyhg; https://lifesciences.datastations.nl/citation?persistentId=doi:10.17026/dans-xtm-cyhg

Abstract:Longitudinal training dams (LTDs) are novel river training structures that divide a river into a main navigation channel and protected shore channels. High velocities at the inflows of these shore channels in the river Waal (the Netherlands) pose a potential bottleneck for migratory fish species swimming upstream. This study assessed the passability of the inflows using flow velocity datasets from governmental monitoring campaigns collected during high river discharges (Q = 3489-5066 m3/s at Lobith Monitoring Station) with an ADCP. The swimming performance of several migratory fish species were estimated from their total lengths (TLs). A new 3D approach to visualize the flow velocity data using Voxler® software is presented. Gasterosteus aculeatus aculeatus was the only fish species with an adult life stage unable to pass the 9 cases tested due to its small size. The juvenile European eel and thicklip grey mullet passed 1 and 0 of the cases, respectively. The most upstream inflow, located in the ...