Rebecca Kessler, writing for Yale Environment 360:
“In North America, a few nature-like fishways were completed in the late 1980s and early 1990s, and the approach has gradually gained popularity since, particularly in New England, the Pacific Northwest, Minnesota, and parts of Canada. Nature-like fishways — which also go by names like “roughened channels” and “stream-like fishways” — are catching on elsewhere, too, including Australia, New Zealand, and Japan. ”
Sarrancolin Dam on France's Neste River (Photo credit: FAO Fisheries and Aquaculture Department)
Size matters. Look at this, Judge the fish passage by hydrology, do you?
