Natel/PNNL test of 186 rainbow trout measuring up to 500 mm indicated that the RHT allows safe passage.
International Water Power & Dam Construction magazine picked up the story about juvenile alewife, a kind of river herring, passing through Natel's Restoration Hydro Turbine.
FishSafe™ RHT designs are at the core of two research projects that have been recommended for funding by the U.S. DOE to advance the science required to engineer safer hydropower turbines.