Operational measures (turbine operations, spillway passage)
operational (requires flow release outside turbine)
fairly steep with rocks, boulders (from 0.4 to 0.05 %)
slow flowing, lowland, sandy (less than 0.05 %)
trl 9: actual system proven in operational environment
Acoustic Doppler current profiler (ADCP)
Guidelines for fishpasses numerical modelling
Radio frequency identification with passive integrated transponder (PIT tagging)